ELECTRIC SERVICE MANUAL

14 3.2 OVERHEAD TRANSFORMER AVAILABLE FAULT CURRENT NEW PAGE NEW PAGE 15 3.3 Padmount Transformer Available Fault Current NEW PAGE NEW PAGE 16 4.0 MOTORS AND SPECIAL EQUIPMENT Introduction Change sentence to read: "For all motor installations greater than five horsepower, customers are required to fill out the motor data form provided by your local distribution engineering representative. Contact your local distribution engineering representative with the completed form. " 16 4.0 MOTORS AND SPECIAL EQUIPMENT Guidelines for Motor Sizes Added Sentence to Guidlines for Motor Sizes table: "5 horsepower and smaller": "Air conditioning units shall be limited to a Locked Rotor Amps (LRA) of 100 amps. LRA exceeding 100 amps may impair service voltage and require additional facilities necessary to provide adequate service. Cost of excess facilities will be at the expense of the customer to remediate." 19 5.0 SERVICE INFORMATION Customer Responsibility Removed point "Electrical service entrance diagram and location" 19 5.0 SERVICE INFORMATION Customer Responsibility Change sentence to read: " A completed service application." 20 5.0 SERVICE INFORMATION, continued New Section ‐ Requirements for Scheduled Work for Service New Section 21 6.0 SERVICE AND SERVICE ENTRANCES (General) One Service Changed sentence to read: "Unless stated otherwise in the rate, price schedule, or tariff, the Company will normally permit only one service per structure." 21 6.0 SERVICE AND SERVICE ENTRANCES (General) Customer Supplied Equipment Changed sentence to read: "The customer must provide, install and maintain the additional equipment necessary for the service, including the meter socket and any required weather proof placards." 23 6.0 SERVICE AND SERVICE ENTRANCES Meter Location Added a bullet point: "A weatherproof placard with minimum 3/4 inch etching lettering labeling the address of service must be installed on standalone meter structures." 24 6.1 OVERHEAD SERVICE Requirements Added Sentence: "Where not accessible by a service truck, overhead service attachment must not exceed 18' above ground level." 25 6.2 UNDERGROUND SERVICE Residential Service Changed substation to read: "Underground service to individual residential dwellings and duplexes will normally be installed, owned and maintained by the Company. The Customer has the option to install a residential service initially per the requirements below and in Appendix G. The service will become the property of the Company once the service is approved and placed in service. This includes individual residential structures on zero‐lot line properties. Services to residential multi‐plex structures (more than two residential units on a connected structure) will be furnished, installed, owned and maintained by the Customer. Meters must be grouped with multi‐meter equipment unless required by the local jurisdiction to be split out to individual meters per unit. Individual services on a multi‐plex structure will be furnished, installed, owned and maintained by the Customer. For zero‐lot line residential structures, the customer is required to install a conduit system for all primary and secondary cable routes in a manner satisfactory to the Company." 25 6.2 UNDERGROUND SERVICE Customer Installed, Residential Service Added Bullet 4: "Customer‐installed, Company‐owned cable MUST match service size conductor referenced in Appendix G Section 5.1. Incorrect wire types will be re‐installed by the company at the customer’s expense." 25 6.2 UNDERGROUND SERVICE Customer Installed, Residential Service Added Bullet 5: "The customer or contractor must call the Company and schedule a site review after the service cable is installed. Both ends of the trench, at the electric meter and at the Company’s enclosure, must be left open for the review. Ends of the red marking tape must be exposed at both ends of the trench. The bottom end of the riser pipe must be visible at the meter end of the trench." 25 6.2 UNDERGROUND SERVICE Customer Installed, Residential Service Added Bullet 6: "See Appendix G for more information on customer installed residential services." REVISIONS MADE TO THE 2023 ELECTRIC SERVICE MANUAL 2023 MANUAL PAGE SECTION ITEM REVISION 25 6.2 UNDERGROUND SERVICE Commercial, Industrial and Other Services Changed subsection to read: "Underground commercial, industrial, and “other” services will be furnished, installed, owned and maintained by the Customer. Other services include residential multi‐plex structures (a structure containing more than two residential units), second service to a detached garage, pole buildings, and any service not defined as a residential service. The Customer will install per NEC requirements, the Company will terminate and make final connections in the transformer. " 25 6.2 UNDERGROUND SERVICE Network Services New subsection to 6.2 labeled "Network Services" 25 6.2 UNDERGROUND SERVICE New Subsection ‐ Ground Movement Copied "Ground Movement" section from section 6.3 26 6.2 UNDERGROUND SERVICE, continued Transformer Pads Changed bullet two to read: "Constructed in a location approved by the Company, with hard surface truck access and unobstructed work space for large vehicles. Truck access is to be permanently maintained by customer." 27 6.2 UNDERGROUND SERVICE, continued New Subsection ‐ Communication Tower Service Add new subsection to section 6.2 labeled "Communication Tower Service". 28 6.3 UNDERGROUND CONDUIT Single‐phase customers Removed bullet point: "Where the customer wants to expedite cable installation" 28 6.3 UNDERGROUND CONDUIT Single‐phase customers Adjusted format of bullet 1 to match the rest of the list. 28 6.3 UNDERGROUND CONDUIT Typical Conduit Req Changed Material to read: "schedule 40 PVC stick or coilable, schedule 40 HDPE coilable, or SDR 13.5 HDPE coilable. Fiberglass stick conduit may be permitted if reviewed by local distribution engineering." 28 6.3 UNDERGROUND CONDUIT Typical Conduit Req Added note: "Either rigid conduit risers or box outs must be used where underground service risers will be surrounded by concrete to avoid frost heave." 29 6.3 UNDERGROUND CONDUIT, Continued Installation Requirements Changed fourth bullet point to read: "Customer will install a synthetic pull tape of 500 lbs. test in the conduit. Pull tape shall be one continuous pull type, and may not be multiple pieces tied together." 29 6.3 UNDERGROUND CONDUIT, Continued Installation Requirements Added bullet point and bolded: "Trenches must be inspected by a Company representative before being back filled." 29 6.3 UNDERGROUND CONDUIT, Continued Ground Movement Changed second bullet point to read: "An expansion joint shall be a minimum twelve (12) inch length Schedule 80 PVC installed on the conduit riser." 30 6.4 OVERHEAD PRIMARY METERING (Over 600 volts) Company Responsibility Added sentence to first line: "Primary metering is required ahead of any customer owned primary facilities. The Company will provide and install the following:" 30 6.4 OVERHEAD PRIMARY METERING (Over 600 volts) Customer Responsibility Added sentence to third bullet point: "The use of a fuse as a disconnecting means will be permitted for single‐phase, primary metered services." 30 6.4 OVERHEAD PRIMARY METERING (Over 600 volts) Customer Responsibility Added fifth bullet point: "Reference Figure 37 for additional details." 31 6.5 UNDERGROUND PRIMARY METERING (Over 600 volts) Provided by Customer Added sentence after bullet points: "Reference Figure 37 for additional details." 33 7.0 CONDUCTOR IDENTIFICATION Multiple Conductors Per Phase Added sentence to second paragraph: "Single‐phase services will be limited to 500 kcmil conductor. Contact local distribution engineering if using conductor larger than 350 kcmil to ensure proper secondary terminals are installed." 34 8.0 SERVICE CONDUCTOR SIZES AND CONNECTIONS Conductor Sizes Changed first paragraph to read: "The Company will allow the use of any NEC approved service conductor as shown in Figure 7. For 3‐phase commercial services, no conductor size above 750 kcmil is allowed, including compressed and compact conductors. For Single‐ phase commercial services, no conductor size above 500 kcmil conductor is allowed. Contact local distribution engineering if using conductor larger than 350 kcmil to ensure proper secondary terminals are installed." 34 8.0 SERVICE CONDUCTOR SIZES AND CONNECTIONS Conductor Sizes Added second paragraph: "Single‐phase services will be limited to 500 kcmil conductor. Contact local distribution engineering if using conductor larger than 350 kcmil to ensure proper secondary terminals are installed." 34 8.0 SERVICE CONDUCTOR SIZES AND CONNECTIONS Conductor Sizes Added sentence: "Residential services must be specific sizes shown in Appendix G. " 34 8.0 SERVICE CONDUCTOR SIZES AND CONNECTIONS Customer Connections Changed fourth bullet point to read: "Bolts must be 1/2” diameter, except as restricted by the terminal hole size of the instrument transformer. These should be sized with no modifications to the CT bars. The instrument transformer terminal holes shall not be enlarged to accept larger bolts. An effort should be made to match the lug hole to the instrument transformer hole size." 34 8.0 SERVICE CONDUCTOR SIZES AND CONNECTIONS Customer Connections Changed fifth bullet point to read: "Lugs must be attached with the maximum number of bolts possible. Two‐bolt lugs are required on each side of bar type CT connections." 35 9.0 METERING EQUIPMENT Meter Socket Mounting Added bullet point: "If meter socket is installed ahead of siding, insure that the meter socket has room for the installation of the riser pipe." 36 9.0 METERING EQUIPMENT, Continued Current Section bolded. 37 10.0 STANDBY GENERATOR SERVICE General Added link to section: "https://www.midamericanenergy.com/media/pdf/trimecs‐‐‐ interconnection‐requirements.pdf" 37 10.0 STANDBY GENERATOR SERVICE Transfer Switch Added bullet point: "Must be installed in a location readily accessible to the company." REVISIONS MADE TO THE 2023 ELECTRIC SERVICE MANUAL 2023 MANUAL PAGE SECTION ITEM REVISION 39 START OF FIGURES Added a "THIS PAGE WAS INTENTIONALLY LEFT BLANK" page after the "FIGURES" tab, before Figure 1. 40 FIGURE 1 NOTES A Added Sentence: "Where not accesible by a service truck, overhead service attachment must not exceed 18 feet above ground level." 40 FIGURE 1 NOTES B Changed sentence to read: "The clearance between the esrvice attachment and weatherhead shall be 24 inch maximum." 41 FIGURE 1 Added clearance dimensions from gas meter to Figure 1 41 FIGURE 1 C Adding window next to weatherhead and move clearance "C" 41 FIGURE 1 5 Changed item 5 to read: "Overhead service entrance conductor must be in conduit. See Figure 4 (pg. 45) for details." 43 FIGURE 2 Drawing note Edit Figure 2(C) to add down guy and notes 45 FIGURE 4 Maximum Service Drop Length Add 600A and 800A Maximum Service Drop Lengths. 45 FIGURE 4 5 Added point 6: "Conduit couplings are not allowed above the roofline or less than 2 feet below the soffit line." 50 FIGURE 7 Figure 7 title changed to "Allowable Service Conductor Sizes for Commercial Services" 50 FIGURE 7 Added sentence to first paragraph: "Single phase services will be limited to 500 kcmil conductor. Contact local distribution engineering if using conductor larger than 350 kcmil to ensure proper secondary terminals are installed." 52 FIGURE 9 Figure A Wording changed to: "6" MAXIMUM CONDUIT SIZE" 54 FIGURE 10 NOTES Added item 10: "Single‐phase temporary services fed from a 120/208V three‐phase transformer and three‐phase temporary services of any voltage class require a manual clamping jaw lever bypass." 56 FIGURE 11 NOTES Added Item 11: "All temporary liquid tight flexible conduit must have steel ends and may not be constructed with 90‐degree ends. Temporary liquid tight flexible conduit for secondary pedestals may not be larger than 1 inch diameter." 56 FIGURE 11 NOTES Added item 12: "Single phase temporary services fed from a 120/208V three‐phase transformer and three‐phase temporary services of any voltage class require a manual clamping jaw lever bypass." 57 FIGURE 11 DETAIL A Updated Detail "A" to read "For 1‐1/2” holes in Secondary Pedestals, Use 2” OD (Outside Diameter) Washer ‐For 2” Holes in transformers, use 2‐1/2” OD (Outside Diameter) Washer" 57 FIGURE 11 Added footnote to page: "**It is recommended, for reliability purposes, that temporary services be installed with copper conductor." 58 FIGURE 12 Drawing note Add "45° MIN" dimension. Add "18" MAX BETWEEN THE WEATHERHEAD AND THE GUY ATTACHMENT"leader. 58 FIGURE 12 Changed sentence to read: "The customer is responsible to install, own, and maintain all other items." 59 FIGURE 13 Drawing Note Changed note to read: "An expansion joint shall be a minimum twelve (12) inch length Schedule 80 PVC installed on the conduit riser" 59 FIGURE 13 Changed drawing note for depth of conduit to read: "18"" 59 FIGURE 13 Drawing note Changed drawing note to read: "Galvanized Insulated Bushing" 59 FIGURE 13 Changed sentence to read: "The customer is responsible to install, own, and maintain all other items." 60 FIGURE 14 NOTES TITLE Changed title to read "Typical Underground Service Meter Pedestal" 60 FIGURE 14 NOTES ITEM 2 Changed sentence to read: "An address, lot number or trailer number must be permanently posted on the outside of the cabinet, below the meter. A weatherproof placard with min. 3/4 inch etched lettering must be used." 60 FIGURE 14 NOTES NEW ITEM Added note 7: "*Check with local jurisdiction on the requirement of a service disconnect installed adjacent to the meter." 61 FIGURE 14 TITLE Changed title to read "Typical Underground Service Meter Pedestal" 62 FIGURE 15 NOTES ITEM 1 Changed second sentence in item 1 to read: "The customer is responsible to install, own, and maintain all other items." 62 FIGURE 15 NOTES NEW ITEM Added note 14: "Service attachement point should be a through‐bolt and match requirements in Figure 3" 62 FIGURE 15 NOTES NEW ITEM Added note 15: "Weatherproof placard with min. 3/4 inch etched writing including address and service designation is required." 62 FIGURE 15 NOTES NEW ITEM Added note: "*Check with local jurisdiction on the requirement of a service disconnect installed adjacent to the meter." 66 FIGURE 19 Added second sentence: "The customer is responsible to install, own, and maintain all other items." 67 FIGURE 20 Drawing Note Changed note to read: "An expansion joint shall be a minimum twelve (12) inch length Schedule 80 PVC installed on the conduit riser opening downward." 67 FIGURE 20 Changed second sentence in item 1 to read: "The customer is responsible to install, own, and maintain all other items." 74 FIGURE 23 NEW: TYPICAL PRIMARY AND SECONDARY UNDERGROUND COMMUNICATION TOWER SERVICE 73 FIGURE 24 Drawing Note Illustrate a “Box” around APT 1, 2, etc… to show a placard. 73 FIGURE 24 ITEM 4 Add second sentence: " A weatherproof placard with min. 3/4 inch etched lettering must be used." 73 FIGURE 24 ITEM 8 Changed sentence to read: "All commercial and non‐residential installations require a manual clamping jaw lever bypass and weatherproof placard with min 3/4 inch etched lettering." REVISIONS MADE TO THE 2023 ELECTRIC SERVICE MANUAL 2023 MANUAL PAGE SECTION ITEM REVISION 73 FIGURE 24 SERVICE CHARACTERISTICS Add row for 3‐phase 277/480V 4‐wire service characteristics. 74 FIGURE 26 Drawing note Illustrate a “Box” around APT 1, 2, etc… to show a placard. 74 FIGURE 26 ITEM 4 Add second sentence: " A weatherproof placard with min. 3/4 inch etched lettering must be used." 74 FIGURE 26 ITEM 6 Changed sentence to read: "All commercial and non‐residential installations require a manual clamping jaw lever bypass and weatherproof placard with min 3/4 inch etched lettering." 74 FIGURE 26 SERVICE CHARACTERISTICS Add row for 3‐phase 277/480V 4‐wire service characteristics. 75 FIGURE 27 ITEM 7 Changed sentence to read: "All commercial and non‐residential installations require a manual clamping jaw lever bypass and weatherproof placard with min 3/4 inch etched lettering." 75 FIGURE 27 NEW ITEM Added item 8: "Customer is liable to fix the knockout should the wrong size be removed." 75 FIGURE 27 NEW ITEM Added note: "*Check with local jurisdiction on the requirement of a service disconnect installed adjacent to the meter." 76 FIGURE 28 Figure 28(A) Remove bus‐bars and extend cable to the socket lugs. 76 FIGURE 28 Figure 28(B) Remove bus‐bars and extend cable to the socket lugs. 76 FIGURE 28 ITEM 7 All commercial and non‐residential installations require a manual clamping jaw lever bypass and weatherproof placard with minimum 3/4 inch etched lettering labeling the address of service.” 76 FIGURE 28 NEW ITEM Added note: "*Check with local jurisdiction on the requirement of a service disconnect installed adjacent to the meter." 77 FIGURE 29 Drawing Note Added dashed bypass lever to both 100A and 200A meter socket drawings with a "commerical service" indicator. 77 FIGURE 29 Drawing note Change both drawing notes to read: "5th terminal required in 9 o'clock position" 77 FIGURE 29 ITEM 7 Changed sentence to read: "All commercial and non‐residential installations require a manual clamping jaw lever bypass and weatherproof placard with minimum 3/4 inch etched lettering labeling the address of service.” 77 FIGURE 29 NEW ITEM Added note: "*Check with local jurisdiction on the requirement of a service disconnect installed adjacent to the meter." 78 FIGURE 30 ITEM 3 Update Item 3 Reference to page 33. 78 FIGURE 30 ITEM 5 Changed sentence to read: The neutral, if insulated, shall be identified by a white or gray covering or tape. (Reference pg. 33) 78 FIGURE 30 ITEM 6 Update Item 6 Reference to page 33 78 FIGURE 30 ITEM 7 Update Item 7 Reference to page 33 78 FIGURE 30 ITEM 8 Changed sentence to read: "All commercial and non‐residential installations require a manual clamping jaw lever bypass and weatherproof placard with minimum 3/4 inch etched lettering labeling the address of service.” 79 FIGURE 31 ITEM 3 Added sentence: "Pull out style disconnects will not be allowed." 79 FIGURE 31 ITEM 4 Added sentence: "Pull out syle disconnects will not be allowed regardless of being installed on the line or load side." 79 FIGURE 31 ITEM 5 Changed sentence to read: "A “480 VOLTS” identification (weatherproof placard with min. 3/4 inch etched lettering) shall be applied in a conspicuous location on the front exterior surface of the meter socket enclosure." 79 FIGURE 31 ITEM 6 Changed sentence to read: The neutral, if insulated, shall be identified by a white or gray covering or tape. (Reference pg. 33) 79 FIGURE 31 ITEM 8 Update Item 8 Reference to page 24 79 FIGURE 31 ITEM 9 Changed sentence to read: "The neutral shall be installed from the source to the means of disconnection." 80 FIGURE 32 NOTES REMOVE REMOVE THIS PAGE 81 FIGURE 32 REMOVE REMOVE THIS PAGE 81 FIGURE 33 NOTES ITEM 13 Added point 13: Metering circuit to be grounded in only one place. 81 FIGURE 33 NOTES ITEM 14 Added point 14: Cabinets shall be bonded to ground at one place—either neutral or system ground. 81 FIGURE 33 NOTES ITEM 15 Added point 15: Metering and bonding wires shall not parallel the neutral. 84 FIGURE 33 WORKING SPACE IN FRONT OF METER Adjusted working clearance in front of meter to 36" 83 FIGURE 34 DIAGRAM Changed diagram label to read: "NEUTRAL FLOATED" 83 FIGURE 34 ITEM 6 Removed point 6 83 FIGURE 34 ITEM 9 Added point 9: "The neutral connector shall be UL listed and insulated from the instrument transformer cabinet." 84 FIGURE 35 DIAGRAM Changed diagram label to read: "NEUTRAL FLOATED" 84 FIGURE 35 ITEM 6 Changed sentence to read: The neutral, if insulated, shall be identified by a white or gray covering or tape. (Reference pg. 33) 84 FIGURE 35 ITEM 7 Removed point 7 84 FIGURE 35 ITEM 10 Changed sentence to read: "A weatherproof placard with min. 3/4 inch etched writing stating "480V" will be placed at all CT and PT cabinets for a 277/480V service." 84 FIGURE 35 NEW ITEM Added point 12: "If 1 inch metering conduit is to be installed from transformer secondary cabinet to the meter socket, install red WARNING tape 1 foot above conduit." 85 FIGURE 35A NEW PAGE Add new page to Instrument Transformer Wiring REVISIONS MADE TO THE 2023 ELECTRIC SERVICE MANUAL 2023 MANUAL PAGE SECTION ITEM REVISION 86 FIGURE 36 TITLE Added title: "CONFIGURATION FOR INSTRUMENT TRANSFORMER RATED SERVICES WITH INTEGRATED VT PACK METER SOCKETS" 86 FIGURE 36 DIAGRAM Changed sentence to read: 1" CONDUIT MINIMUM SEPERATION FROM HINGED SIDE OF CT CABINET TO BE WIDTH OF HINGED DOOR PLUS 3 INCHES 86 FIGURE 36 DIAGRAM Add drawing note "ADD RED "WARNING" TAPE 1" ABOVE METERING CONDUIT" 87 FIGURE 36A NEW PAGE Add new page 88 FIGURE 37 NEW PAGE Add "PRIMARY METERING SERVICE" 89 FIGURE 37A NEW PAGE Add "OVERHEAD PRIMARY SERVICE" 90 FIGURE 37B NEW PAGE Add "OVERHEAD TO UNDERGROUND PRIMARY SERVICE" 91 FIGURE 37C NEW PAGE Add "THREE PHASE UNDERGROUND PRIMARY SERVICE TO METERING ENCLOSURE (DEAD‐ FRONT ONLY)" 92 FIGURE 37D NEW PAGE Add "THREE PHASE UNDERGROUND PRIMARY SERVICE TO SWITCHGEAR" 93 FIGURE 37E NEW PAGE Add "REQUIREMENTS FOR METERING ENCLOSURE AND SWITCHGEAR" 94 APPENDIX A ITEM 8 Changed bullet point 5 to read: "All commercial and non‐residential installations require a manual clamping jaw lever bypass and weatherproof placard with minimum 3/4 inch etched lettering labeling the address of service.” 96 APPENDIX B‐1 ITEM 2 Changed point 2 to read: "Constructed in a manner satisfactory to the Company, in a mutually agreed upon location with hard surface truck access and unobstructed work space for large vehicles. Truck access is to be permanently maintained by customer." 96 APPENDIX B‐1 ITEM 5 Added sentence: " It is recommended that conduit not be installed under the transformer pad between the piers." 96 APPENDIX B‐1 ITEM 7 Changed first sentence to read: "When necessary for traffic protection or at local engineering’s discretion, set a 4” diameter concrete‐filled galvanized steel post 3’‐0” from pad corner. Post shall be 8’ long with a 4’ concrete embedment." 96 APPENDIX B‐1 ITEM 9 Changed sentence to read: "A trench 2’‐0” deep and 3’‐0” wide will be dug on all four sides. The trench will be lined with silt fence fabric tucked under the pad and filled with either 2” or 3” screened river rock to final grade. Contact local distribution engineering representative if design needs modification." 96 APPENDIX B‐1 NEW ITEM Added note 10: "Primary and secondary conduit bays must be back filled with a minimum of 1" on concrete after primary transformer pad has been formed to contain oil leaks." 101 APPENDIX B‐3 5.3.6 Changed sentence to read: "The finished slab must be level." 101 APPENDIX B‐3 NEW ITEM Added item 6.1.7: "A minimum of 1" of concrete must be filled in to the primary and secondary conduit bays after the main transformer pad has cured and forms are removed to contain oil leaks." 102 APPENDIX B‐4 SECTION B‐B Changed drawing B‐B to read: "(4) 8" DIA CORNER PIERS" 103 APPENDIX B‐5 SECTION B‐B Changed drawing B‐B to read: "(4) 10" DIA CORNER PIERS" 106 APPENDIX C‐1 ITEM 6 Bolded statement: "A hinged cover (with heavy‐duty, pin type hinges on the side of the box) is required" 106 APPENDIX C‐1 ITEM 16 Changed sentence to read: "A weatherproof placard with min. 3/4 inch etched writing stating “480V” will be placed at all CT and PT cabinets for a 277/480V service." 107 APPENDIX C‐2 DIAGRAM Changed diagram label to read: "NEUTRAL FLOATED" 108 APPENDIX C‐3 DIAGRAM Changed diagram label to read: "NEUTRAL FLOATED" 108 APPENDIX C‐3 TABLE Changed all depths (L‐W‐D) from 10" to 12" 109 APPENDIX C‐4 DIAGRAM Changed diagram label to read: "NEUTRAL FLOATED" 109 APPENDIX C‐4 TABLE Changed all depths (L‐W‐D) from 10" to 12" 110 APPENDIX C‐5 DIAGRAM Changed diagram label to read: "NEUTRAL FLOATED" 110 APPENDIX C‐5 TABLE Changed all depths (L‐W‐D) from 10" to 12" 111 APPENDIX C‐6 DIAGRAM Changed diagram label to read: "NEUTRAL FLOATED" 111 APPENDIX C‐6 TABLE Changed all depths (L‐W‐D) from 10" to 12" 105 APPENDIX E REMOVE PAGE 113 APPENDIX F Drawing Note Make the dashed outline of the PT/CT cabinet and meter socket bold. 113 APPENDIX F ITEM 1 Added sentence: "Unistrut is not allowed for pedestal support." 113 APPENDIX F ITEM 6 Changed Item 6 to read: "Driven ground rod to be bonded to the inside of the CT or PT cabinet." 114 APPENDIX G 3.5 Changed second sentence to read: "A 36” x 36” handhole that is 8" below the bottom of the conduit riser immediately adjacent to the base of the enclosure must be hand dug by the customer/contractor." 114 APPENDIX G 3.7 Item 3.7 bolded. 115 APPENDIX G 5.1 Removed 100 A or less classification from entrance size table. 115 APPENDIX G 5.1 Add allowance for services over 400 A. 117 APPENDIX H Item 5 at the top Updated to read: "Before service is connected, each meter socket cover, socket back plate and associated breaker of fuse panel must be plainly marked with a weatherproof placard with minimum 3/4 inch etched lettering labeling the address of service. (Section 6.0, pg. 21, Multiple Meters)" Effective September 1, 2023 1 ELECTRIC SERVICE MANUAL INTRODUCTION _______________________________________________________ Purpose The purpose of this manual is to supply essential information to anyone concerned with the electrical installations of MidAmerican Energy Company (Company) customers, such as:  Customers  Customers' representatives  Employees  Architects  Engineers  Contractors It is the Company's objective to cooperate with and assist customers to obtain safe, efficient electric service. ________________________________________________________________ Code Nothing contained in this manual shall be construed to relieve or lessen the Compliance responsibility of the customer or the customer’s representative from complying with all applicable codes, rules and regulations. ________________________________________________________________ Company Consistent with the Company’s tariff, no inspection by the Company, nor Liability failure to object to the customer’s installation, shall render the Company liable for injury or damage resulting from any defective installation by the customer. _______________________________________________________________ Drawings The drawings and written portion of this manual supplement each other. Materials and workmanship specified or implied by one and not the other shall be supplied and installed in accordance with the more stringent of the requirements. The drawings are general in nature and are not intended to be design specifications. _______________________________________________________________ Continued on next page In Illinois call (800) 892-0123 In Iowa call (800) 292-8989 In South Dakota call (800) 781-7474 In Nebraska call (800) 331-5666 Universal Call 811 CUSTOMERS TO CALL 48 HOURS BEFORE DIGGING TO LOCATE UNDERGROUND FACILITIES Effective September 1, 2023 2 INTRODUCTION , continued _________________________________________________________________ Safety Codes The information in this manual is based on management-approved and interpretations of the intended safe and practical applications of the following: Regulations  National Electrical Code (NEC)*  Regulations of the governing state's utilities commission/board  MidAmerican Energy Company tariff Local governing authorities may impose more stringent requirements than shown in this manual. The governing state's electrical safety code and National Electrical Safety Code (NESC) contain provisions relating to Company installations and work practices. * The National Electrical Safety Code is a registered trademark of the Institute of Electrical and Electronic Engineers, Inc., New York, New York 10016. The NEC is registered trademarks of the National Fire Protection Association, Inc., Quincy, MA 02269. _______________________________________________________________________ Manual Does This manual does not cover: Not Cover  Electric utility installations that are under the exclusive control of the Company for the purpose of:  Metering  Generation  Control  Transformation  Transmission  Distribution  Associated work practices of the Company in the exercise of its function as a utility. _______________________________________________________________________ Specific If you desire to discuss specific problems not covered or resolved by this Problems manual, contact your Company representative. _______________________________________________________________________ Additional For additional copies of the 2023 Electric Service Manual, contact your Company Copies of the Representative. An electronic version of the 2020 Electric Service Manual is also Electric available online at www.midamericanenergy.com, under the “Contractor Training Service and Safety” tab. Manual Continued on next page Effective September 1, 2023 3 INTRODUCTION , continued Communities INC = Incorporated Continued on next page Iowa Ackley Hardin Iowa Ackworth Warren Iowa Adel Dallas Iowa Alleman Polk Iowa Allison Butler Iowa Altoona Polk Iowa Alvord Lyon Iowa No Anderson Fremont Iowa Ankeny Polk Iowa Arcadia Carroll Iowa Archer O'Brien Iowa Aredale Butler Iowa Arion Crawford Iowa Arthur Ida Iowa Aspinwall Crawford Iowa No Astor Crawford Iowa Athelstan Taylor Iowa No Attica Marion Iowa Auburn (Whsle) Sac Iowa Audubon Audubon Iowa No Austinville Butler Iowa Avoca Pottawattamie Iowa No Avon Lake Polk Iowa Ayrshire Palo Alto Iowa Badger Webster Iowa Barnes City Mahaska Iowa Barnum Webster Iowa No Bartlett Fremont Iowa Battle Creek Ida Iowa Beacon Mahaska Iowa Bedford Taylor Iowa No Beech Warren Iowa No Beeds Lake Franklin Iowa No Beloit Lyon Iowa No Bentley Pottawattamie Iowa No Berwick Polk Iowa Bettendorf Scott Iowa Bevington Madison Iowa No Bingham/Norwich Page Iowa Blanchard Page Iowa Blencoe Monona Iowa Blue Grass Scott Iowa Bode Humboldt Iowa Bondurant Polk Iowa No Booneville Dallas Iowa No Botna Shelby Iowa No Bowsher Polk Iowa Boyden Sioux Iowa No Boyer Crawford Iowa Braddyville Page Iowa Bradgate Humboldt Iowa Brayton Audubon Iowa Breda (Whsle) Carroll Iowa No Bremer Bremer Iowa Bristow Butler STATE INC TOWN COUNTY STATE INC TOWN COUNTY Iowa Bronson Woodbury Iowa No Brooks Adams Iowa Brunsville Plymouth Iowa Buck Grove Crawford Iowa Buffalo (Whsle) Scott Iowa No Burnside Webster Iowa Bussey Marion Iowa No California Junction Harrison Iowa Callender (Whsle) Webster Iowa Calumet O'Brien Iowa Camanche Clinton Iowa No Capitol Heights Polk Iowa Carbon Adams Iowa No Carbondale Polk Iowa Carlisle (Whlse) Warren Iowa No Carmel Sioux Iowa No Carnarvon Sac Iowa No Carnes Sioux Iowa No Carney Polk Iowa Carroll Carroll Iowa Carson Pottawattamie Iowa Castana Monona Iowa No Cedar Mahaska Iowa No Chapin Franklin Iowa Charles City Floyd Iowa Charter Oak Crawford Iowa Chatsworth Sioux Iowa Cherokee Cherokee Iowa No Churchville Warren Iowa Clare Webster Iowa Clarinda Page Iowa Clarion Wright Iowa Clarksville Butler Iowa Cleghorn Cherokee Iowa No Climbing Hill Woodbury Iowa Clive Dallas/Polk Iowa No Coalville Webster Iowa Coburg Montgomery Iowa Coin Page Iowa Colfax Jasper Iowa College Springs Page Iowa No Columbia Marion Iowa No Conger Warren Iowa Coralville Johnson Iowa No Corley Shelby Iowa No Cornelia Wright Iowa Correctionville Woodbury Iowa No Cosgrove Johnson Iowa Council Bluffs Pottawattamie Iowa Craig Plymouth Iowa Crescent Pottawattamie Iowa Cumming Warren Iowa Cushing Woodbury Iowa Cylinder Palo Alto Iowa Dakota City Humboldt Effective September 1, 2023 4 INTRODUCTION, Continued Communities INC = Incorporated Continued on next page Iowa Dallas Center Dallas Iowa Danbury Woodbury Iowa Davenport Scott Iowa Dedham Carroll Iowa Defiance Shelby Iowa Deloit Crawford Iowa Denver (Whlse) Bremer Iowa Des Moines Polk Iowa Desoto Dallas Iowa No Dewar Black Hawk Iowa Doon Lyon Iowa Dougherty Cerro Gordo Iowa Dow City Crawford Iowa Dumont Butler Iowa Duncombe Webster Iowa Dunkerton Black Hawk Iowa Dunlap Harrison Iowa Eagle Grove Black Hawk Iowa Earlham Madison Iowa Earling Shelby Iowa Early Sac Iowa Eldridge (Whsle) Scott Iowa Elk Horn Shelby Iowa Elk Run Heights Black Hawk Iowa Elkhart Polk Iowa Elliott Montgomery Iowa Emerson Mills Iowa Emmetsburg Palo Alto Iowa Essex Page Iowa Estherville (Whsle) Emmet Iowa Evansdale Black Hawk Iowa Exira Audubon Iowa Farnhamville Calhoun Iowa Farragut Fremont Iowa No Faulkner Franklin Iowa No Fern Grundy Iowa No Fiscus Audubon Iowa No Flagler Marion Iowa Floyd Floyd Iowa Fonda (Whsle) Pocahontas Iowa Fort Dodge Webster Iowa Galva Ida Iowa No Gaza O'Brien Iowa Geneva Franklin Iowa No Germantown O'Brien Iowa Gilbertville Black Hawk Iowa Gilmore City Humboldt/ Pocahontas Iowa Glenwood Mills Iowa Goldfield Wright Iowa Granger Dallas Iowa No Grant Center Woodbury Iowa No Grant City Sac Iowa Granville Sioux Iowa Gravity Taylor STATE INC TOWN COUNTY STATE INC TOWN COUNTY Iowa Gray Audubon Iowa Grimes Polk Iowa Griswold Cass Iowa Halbur Carroll Iowa Hamburg Fremont Iowa Hamilton Marion Iowa No Hamlin Audubon Iowa Hampton Franklin Iowa Hancock Pottawattamie Iowa Hansell Franklin Iowa Hardy Humboldt Iowa Hartford Warren Iowa Harvey Marion Iowa Hastings Mills Iowa No Hawleyville Page Iowa Henderson Mills Iowa Hepburn Page Iowa No Holly Springs Woodbury Iowa No Holmes Wright Iowa Holstein Ida Iowa Hornick Woodbury Iowa No Horton Bremer Iowa Hospers Sioux Iowa Hudson Black Hawk Iowa Hudson (Whlse) Black Hawk Iowa Hull Sioux Iowa Humboldt Humboldt Iowa Ida Grove Ida Iowa Imogene Fremont Iowa Inwood Lyon Iowa Iowa City Johnson Iowa Ireton Sioux Iowa Irwin Shelby Iowa No Jacksonville Shelby Iowa No James Plymouth Iowa Janesville Bremer Iowa Jesup Buchanan Iowa No Joetown Johnson Iowa Johnston Polk Iowa Jolley Calhoun Iowa No Kalo Webster Iowa Kalona Washington Iowa Keomah Village Mahaska Iowa No Kesley Butler Iowa Kingsley Plymouth Iowa Kirkman Shelby Iowa Kirkville Wapello Iowa Kiron Crawford Iowa Knierim Calhoun Iowa No Knoke Pocahontas Iowa Knoxville Marion Iowa No Lacey Mahaska Iowa Lake City Calhoun Iowa Lakeside Buena Vista Iowa Lakeview (Whsle) Sac Effective September 1, 2023 5 INTRODUCTION , continued Communities INC = Incorporated Continued on next page STATE INC TOWN COUNTY STATE INC TOWN COUNTY Iowa Lanesboro Carroll Iowa Larrabee Cherokee Iowa Latimer Franklin Iowa No Lavinia Calhoun Iowa Lawton Woodbury Iowa Le Mars Plymouth Iowa LeClaire Scott Iowa Leighton Mahaska Iowa Lewis Cass Iowa No Liberty Center Warren Iowa Lidderdale Carroll Iowa Linwood Scott Iowa Little Sioux Harrison Iowa No Littleton Buchanan Iowa Logan Harrison Iowa Lohrville Calhoun Iowa No Loveland Pottawattamie Iowa Lovilia Monroe Iowa No Lovington Polk Iowa No Luton Woodbury Iowa Luverne Kossuth Iowa Lytton Calhoun Iowa Macedonia Pottawattamie Iowa Magnolia Harrison Iowa Malvern Mills Iowa Manson Calhoun Iowa No Maple River Carroll Iowa Marcus Cherokee Iowa Marne Cass Iowa Martensdale Warren Iowa Marysville Marion Iowa Maurice Sioux Iowa McClelland Pottawattamie Iowa No McPaul Fremont Iowa Melcher-Dallas Marion Iowa Meriden Cherokee Iowa Merrill Plymouth Iowa No Middleburg Sioux Iowa Milo Warren Iowa Minburn Dallas Iowa Minden Pottawattamie Iowa No Mineola Mills Iowa Mingo Jasper Iowa Missouri Valley Harrison Iowa Mitchellville Polk Iowa Modale Harrison Iowa Mondamin Harrison Iowa Monroe Jasper Iowa Moorhead Monona Iowa Moorland Webster Iowa No Morse Johnson Iowa No Mount Carmel Carroll Iowa Mount Joy Scott Iowa Moville Woodbury Iowa Nashua Chickasaw Iowa Nemaha Sac Iowa New Hartford Butler/Grundy Iowa New Liberty Scott Iowa New Market Taylor Iowa New Sharon Mahaska Iowa Newell Buena Vista Iowa No Newkirk Sioux Iowa Nodaway Adams Iowa Northboro Page Iowa Norwalk Warren Iowa No Norwich Page Iowa Oakland Pottawattamie Iowa No Oasis Johnson Iowa Odebolt Sac Iowa Oskaloosa Mahaska Iowa Otho Webster Iowa No Otley Marion Iowa Oto Woodbury Iowa Ottosen Humboldt Iowa Oyens Plymouth Iowa Pacific Junction Mills Iowa Palmer Pocahontas Iowa No Palmyra Warren Iowa Panama Shelby Iowa Panorama Park Scott Iowa Parkersburg Butler Iowa Patterson Madison Iowa No Peoria Mahaska Iowa No Percival Fremont Iowa No Perkins Sioux Iowa No Pershing Marion Iowa Persia Harrison Iowa Pierson Woodbury Iowa Pioneer Humboldt Iowa Pisgah Harrison Iowa Plainfield Bremer Iowa Pleasant Hill Polk Iowa No Pleasant Valley Scott Iowa Pleasantville Marion Iowa Pocahontas(Whsle) Pocahontas Iowa Polk City Polk Iowa Pomeroy Calhoun Iowa No Ponderosa Poweshiek Iowa No Port Neal Woodbury Iowa Portsmouth Shelby Iowa No Powersville Floyd Iowa Prairie City Jasper Iowa Princeton Scott Iowa No Prole Warren Iowa Quimby Cherokee Iowa Randolph Fremont Iowa Raymond Black Hawk Iowa Red Oak Montgomery Iowa No Red Rock Marion Iowa No Richards Calhoun Effective September 1, 2023 6 STATE INC TOWN COUNTY STATE INC TOWN COUNTY INTRODUCTION , continued Communities INC = Incorporated Continued on next page Iowa Ricketts Crawford Iowa No Rising Sun Polk Iowa No River Sioux Harrison Iowa Riverdale Scott Iowa Riverton Fremont Iowa Rock Valley Sioux Iowa Rockwell Cerro Gordo Iowa Rockwell City Calhoun Iowa Rodney Monona Iowa No Roselle Carroll Iowa No Ross Audubon Iowa Runnells Polk Iowa Ruthven Palo Alto Iowa Rutland Humboldt Iowa Sac City Sac Iowa Salix Woodbury Iowa Sandyville Warren Iowa Saylorville Polk Iowa Schaller Sac Iowa Schleswig Crawford Iowa No Scotch Ridge Warren Iowa No Seney Plymouth Iowa Sergeant Bluff (Whlse) Woodbury Iowa Shambaugh Page Iowa Sheffield Franklin Iowa Sheldon O'Brien Iowa Shell Rock Butler Iowa Shenandoah Page Iowa Sidney Fremont Iowa Silver City Mills Iowa Sioux City Woodbury Iowa Sloan Woodbury Iowa Smithland Woodbury Iowa Soldier Monona Iowa Somers Calhoun Iowa No Spring Hill Warren Iowa St Charles Madison Iowa No St Joseph Kossuth Iowa St Marys Warren Iowa Storm Lake Buena Vista Iowa Stout Butler Iowa No Strahan Mills Iowa Struble Plymouth Iowa No Sulphur Springs Buena Vista Iowa No Summerset Warren Iowa Sutherland O'Brien Iowa No Swan Marion Iowa Tabor Fremont Iowa No Taintor Mahaska Iowa Templeton Carroll Iowa No Tenville Page Iowa Thor Humboldt Iowa Thurman Fremont Iowa No Tracy Marion Iowa Treynor Pottawattamie Iowa Truesdale Buena Vista Iowa Turin Monona Iowa No Twin Lakes Calhoun Iowa No Ulmer Sac Iowa Underwood Pottawattamie Iowa No Union Mills Mahaska Iowa University Heights Johnson Iowa No University Park Mahaska Iowa Urbandale Dallas/Polk Iowa Ute Monona Iowa Vail Crawford Iowa No Valeria Jasper Iowa Van Meter Dallas Iowa Varina Pocahontas Iowa Vincent Webster Iowa No Voorhies Black Hawk Iowa Wall Lake (Whsle) Sac Iowa Walnut Pottawattamie Iowa No Washburn Black Hawk Iowa Washta Cherokee Iowa Waterloo Black Hawk Iowa Waukee Dallas Iowa Webster City Hamilton Iowa West Des Moines Polk Iowa No Weston Pottawattamie Iowa Westphalia Shelby Iowa Westside Crawford Iowa Whiting Monona Iowa No Wick Warren Iowa Willey Carroll Iowa No Windham Johnson Iowa Windsor Heights Polk Iowa No Wright Mahaska Iowa Yetter Calhoun Iowa Yorktown Page STATE INC TOWN COUNTY STATE INC TOWN COUNTY Effective September 1, 2023 7 STATE INC TOWN COUNTY STATE INC TOWN COUNTY INTRODUCTION , continued Communities INC = Incorporated Continued on next page Illinois Andalusia Rock Island Illinois Andover Henry Illinois Barstow Rock Island Illinois No Boden Mercer Illinois No Buffalo Prairie Rock Island Illinois No Cable Mercer Illinois Carbon Cliff Rock Island Illinois Cleveland Henry Illinois Coal Valley Rock Island Illinois Colona Henry Illinois Cordova Rock Island Illinois No Coyne Center Rock Island Illinois East Moline Rock Island Illinois No Edgington Rock Island Illinois No Green River Henry Illinois Green Rock Henry Illinois No Hamlet Mercer Illinois Hampton Rock Island Illinois Hillsdale Rock Island Illinois No Illinois City Rock Island Illinois No Joslin Rock Island Illinois No Lynn Center Henry Illinois Matherville Mercer Illinois Milan Rock Island Illinois No Millersburg Mercer Illinois Moline Rock Island Illinois Oak Grove Rock Island Illinois No Ophiem Henry Illinois Orion Henry Illinois No Osborne Rock Island Illinois No Osco Henry Illinois Port Byron Rock Island Illinois No Preemption Mercer Illinois Rapids City Rock Island Illinois Reynolds Rock Island Illinois Rock Island Rock Island Illinois Sherrard Mercer Illinois Silvis Rock Island Illinois No Swedona Mercer Illinois No Taylor Ridge Rock Island South Dakota Alcester Union South Dakota No Dakota Dunes Union South Dakota Fairview Lincoln South Dakota Hudson Lincoln South Dakota Jefferson Union South Dakota North Sioux City Union STATE INC TOWN COUNTY STATE INC TOWN COUNTY Effective September 1, 2023 8 THIS PAGE INTENTIONALLY LEFT BLANK Effective September 1, 2023 9 ____________________________________________________________ The electric service supplied by the Company is 60 hertz alternating current. ________________________________________________________________________ One service voltage will be provided to each service location. The following table lists:  Nominal voltages offered to the customer.  Maximum size service entrance that the Company can accommodate without special consideration. SERVICE VOLTAGES AND LIMITATIONS Type of Service Max. Service Entrance Size (Amperes) Voltage Wire Phase Overhead Overhead to URD Underground 120 volt 2-wire Single-phase 60 60 60 120/240 volt 3-wire Single-phase 800 800 1000 120Y/208 volt 4-wire Three-phase 1000 800 3000 120/240 volt 4-wire delta Three-phase 800 800 (see note)** 277Y/480 volt 4-wire Three-phase 400 400 4000* 120Y/208 volt 3-wire Single-phase (see note)* (see note)* (see note)* Higher voltage service may be available for approved loads upon application to the Company. It is the customer's responsibility to contact the Company prior to design of the customer's electrical system to determine the type of service available at any specific location. The customer should be aware that not all voltages are available at all locations or for all loads. It is recommended that the customer contact the Company before purchasing equipment. Calculations are based on 80% load level per NEC overhead transformer sizes, based on a combined 300 kVA. Contact your Company representative for service availability on 100% rated panels. * Contact your Company representative for service availability. ** Not available from a padmounted transformer. ________________________________________________________________ All extensions of service will be installed according to the Company's tariff. Extension cost information is available at Company business offices or online at https://www.midamericanenergy.com/rates-tariffs Introduction Service Voltages Extension Policies 1.0 AVAILABILITY AND CHARACTERISTICS OF SERVICE Effective September 1, 2023 10 2.0 DIVERSION OF SERVICE OR TAMPERING _________________________________________________________________ Diversion and The following are prohibited: Tampering Prohibited  Tampering with Company equipment  Breaking of meter seals  Opening or damaging of Company locks  Interference with operation of Company equipment  Unauthorized work performed on meter installations or other property of the Company If access to Company equipment is needed, the Company requires a minimum of 24-hours notice. _________________________________________________________________ Disconnection The Company will disconnect service to the customer and remove the meters and metering equipment in the event of such diversion or tampering. _________________________________________________________________ Customer The customer shall be responsible for payment of all costs which result from Cost such diversion or tampering. _________________________________________________________________ Effective September 1, 2023 11 3.0 PROTECTION OF CUSTOMER EQUIPMENT ________________________________________________________________ Introduction The Company will use reasonable diligence to supply continuous and sufficient electric service to its customers that meets or exceeds all regulatory requirements. In some instances, such as major storms where lightning, high winds or similar adverse conditions occur, the Company's electrical system may experience momentary outages and/or voltage spikes. ________________________________________________________________ Protection of The customer is advised to provide adequate protection against the effects of Motors and outages or voltage spikes in accordance with the NEC or other pertinent Other sources of information for all types of motors and other equipment. Equipment Equipment that should be protected includes, but is not limited to:  Motors  Computers  Electronics equipment  Equipment in which computers or electronics form an integral operating part Equipment should be protected under all conditions, including:  Overload  Loss of voltage  High or low voltage  Loss of phase(s) (e.g. single phasing on polyphase motors)  Re-establishment of service after any of the foregoing  Phase reversal  Motors that cannot be subjected to full voltage on starting  Harmonics or wave form irregularities Failure to provide such protection may result in needless damage to equipment and the expense of delay and repair. ________________________________________________________________ Continued on next page Effective September 1, 2023 12 __________________________________________________________________________ Sensitive electronics, such as microprocessor-based home electronics and business computers, are susceptible to damage due to voltage spikes or surges. Before any microprocessor-based electronics are installed:  Wiring practices that meet manufacturer specifications need to be assured. (For example, proper grounding and dedicated circuits are important.)  Consideration should be given to installing transient voltage surge suppression at the:  Main service entrance and  Point of use  An uninterruptible power supply (battery backup) should be considered if a momentary voltage dip or outage would cause loss of data. __________________________________________________________________________ If you have any questions concerning minimum protective requirements, contact the equipment supplier or your Company representative. __________________________________________________________________________ 3.0 PROTECTION OF CUSTOMER EQUIPMENT, Continued Microproce- ssor-Based Electronics Additional Information Effective September 1, 2023 13 Introduction Background Service Panel Interrupting Ratings Fault Current Calculations Additional Help 3.1 AVAILABLE FAULT CURRENT INFORMATION GUIDE ________________________________________________________________________ The following two pages show the available fault currents for various combinations of transformers and service voltages. Page 14 is dedicated to overhead transformers, while page 15 is dedicated to padmounted transformers. Both tables can be used for new installations or for older installations where the transformer impedance has been verified and is consistent with the values in the tables. ________________________________________________________________________ The impedance values used in the tables are based on DOE 10 CFR Part 431 standards. The lowest impedance value for each transformer size was used in the table to determine the maximum fault current value available at the secondary terminals of the transformer. ________________________________________________________________________ Service equipment panels have industry standard ratings of: 10,000 – 22,000 – 42,000 – 65,000 – 100,000 Amps RMS symmetrical. Circuit breakers also have similar interrupting ratings and in general should be sized to match the panel. Since circuit breakers will fit many panels, it is possible for a customer to install a 65,000 amp panel, but use 42,000 amp circuit breakers. In this case, the overall panel rating would be the lowest of the two values or 42,000 amps. The fault current values in the table are the maximum available at the secondary terminals of the transformer. The service entrance panel may be sized to accommodate this amount of worst case fault current, or a qualified electrical contractor/electrician may choose to further calculate the available fault current at the location of the panel by calculating the fault current reduction(s) due to any secondary and/or service lateral conductors. Company personnel will not specify customer equipment ratings and only a qualified electrical contractor/electrician should determine the proper service panel and circuit breaker sizes & configurations. Available fault current values are subject to change. If a transformer is replaced with a unit of different size, the available fault current may increase beyond the existing panel’s rating. ________________________________________________________________________  Calculated using an "infinite bus" on the primary side of the transformer  Calculated using the smallest transformer impedance per DOE 10 CFR Part 431 standards  Fault types are a bolted (solidly grounded) 3-phase line-to-line fault for the three-phase transformers and a bolted line-to-line fault for the single-phase transformers  Calculated at the secondary terminals of the transformer  Does not include any secondary/service wire impedances that could further reduce available fault current and allow a lower rated panel to be installed ________________________________________________________________________ Please contact your local distribution engineering representative if more precise calculations are required, if there is a combination that is not in the charts, or if the transformers are not 15 kV class (12.47 kV to 13.8 kV). ________________________________________________________________________ Effective September 1, 2023 14 Single-Phase Overhead (120/240 Volt) Three-Phase Overhead (120/208 Volt) Three-Phase Overhead (277/480 Volt) Three-Phase Overhead (120/240 Volt - 4 Wire) Notes: 3.2 OVERHEAD TRANSFORMER AVAILABLE FAULT CURRENT _______________________________________________________________________ 1. This guide can be used to estimate the maximum available fault current at the secondary terminals of transformers. Values shown are for a bolted 3-phase fault for the 3-phase transformers, and a bolted line-to-line fault for the 1-phase transformers. 2. Calculations are based upon an infinite high-side available fault current and the lowest impedance that can be expected for each transformer size. Therefore, the fault currents are the largest that can be expected at the transformer secondary terminals under worst-case conditions. 3. Consideration must be given to the possibility of an increase in available fault current if the existing transformer is replaced with a unit of different size.  Secondary cable runs will lower the fault current seen at the service equipment location. It may be possible to reduce this value, but a qualified person should calculate the new fault current to verify that this can be done. The impedance of the secondary system must be included in this calculation. ________________________________________________________________________ Available Fault Current (RMS Symmetrical) for 12.47kV to 13.8kV overhead transformer Transformer (kVA) Impedance (%) 15 1.00% 25 1.00% 50 1.50% 75 1.50% Maximum Fault Current (Amps) 6,250 10,417 13,889 20,833 100 1.50% 27,778 Transformer (kVA) Impedance (%) Maximum Fault Current (Amps) 75 1.00% 20,818 150 1.50% 27,757 225 1.50% 41,636 300 1.50% 55,514 Transformer (kVA) Impedance (%) Maximum Fault Current (Amps) 75 1.00% 9,021 150 1.50% 12,028 225 1.50% 18,042 300 1.50% 24,056 Transformer (kVA) Impedance (%) Maximum Fault Current (Amps) 75 1.00% 18,042 150 1.50% 24,056 225 1.50% 36,084 300 1.50% 48,113 Effective September 1, 2023 15 Single-Phase Padmount (120/240 Volt) Three-Phase Padmount (120/208 Volt) Three-Phase Padmount (277/480 Volt) Notes: 3.3 Padmount Transformer Available Fault Current _______________________________________________________________________ 1. This guide can be used to estimate the maximum available fault current at the secondary terminals of transformers. Values shown are for a bolted 3-phase fault for the 3-phase transformers, and a bolted line-to-line fault for the 1-phase transformers. 2. Calculations are based upon an infinite high-side available fault current and the lowest impedance that can be expected for each transformer size. Therefore, the fault currents are the largest that can be expected at the transformer secondary terminals under worst-case conditions. 3. Consideration must be given to the possibility of an increase in available fault current if the existing transformer is replaced with a unit of different size.  Secondary cable runs will lower the fault current seen at the service equipment location. It may be possible to reduce this value, but a qualified person should calculate the new fault current to verify that this can be done. The impedance of the secondary system must be included in this calculation. Available Fault Current (RMS Symmetrical) for 12.47kV to 13.8kV padmount transformer Transformer (kVA) Impedance (%) 25 1.00% 50 1.50% 75 1.50% 100 1.50% Maximum Fault Current (Amps) 10,417 13,889 20,833 27,778 167 1.50% 46,389 Transformer (kVA) Impedance (%) Maximum Fault Current (Amps) 75 1.00% 20,818 150 1.50% 34,697 300 1.50% 69,393 500 1.50% 92,524 750 5.00% 41,636 1000 5.00% 55,514 Transformer (kVA) Impedance (%) Maximum Fault Current (Amps) 75 1.00% 9,021 150 1.20% 15,035 300 1.20% 30,070 500 1.50% 40,094 750 5.00% 18,042 1000 5.00% 24,056 1500 5.00% 36,084 2500 5.00% 60,141 2000 5.00% 48,113 Effective September 1, 2023 16 4.0 MOTORS AND SPECIAL EQUIPMENT _________________________________________________________________ Introduction The proper operation of motors and other electrical equipment is necessary to:  Minimize objectionable motor starting effects.  Protect the service integrity to other customers. All motors require starting currents substantially greater than their normal running currents. Normal starting currents can be five to six times greater than the running current. Excessive starting currents will result in objectionable drops in the supply voltage to customers in the vicinity. Per the MidAmerican Energy Electric Tariff No. 1 filed with the Iowa Utilities Board, customer facilities must be maintained and operated so they do not adversely affect service to other customers. Therefore, the customer's equipment must normally conform to the following requirements. Any exceptions thereto will be subject to a distribution engineering review and documented in a written agreement between MidAmerican Energy and the customer. For all motor installations greater than five horsepower, customers are required to fill out the motor data form provided by your local distribution engineering representative. Contact your local distribution engineering representative with the completed form. It is imperative an engineering system study be completed prior to any motor purchases. Starting current limitations on the electric distribution system may force the Company to make upgrades at the customer’s expense in order to accommodate the load. Each customer should recognize the possible need to upgrade an existing electric service entrance in order to properly serve the new load. _________________________________________________________________ Guidelines for Motor Sizes Single-phase motors rated 230-240 volts may not operate satisfactorily on 208 volts. Check manufacturer’s specifications. Continued on next page Single-Phase Motor Guideline Up to 2 horsepower May be operated on 120 volts 2 horsepower and larger Must be operated on 208 or 240 volts 5 horsepower and smaller May be operated without special means of reducing starting current.  Air conditioning units shall be limited to a Locked Rotor Amps (LRA) of 100 amps. LRA exceeding 100 amps may impair service voltage and require additional facilities necessary to provide adequate service. Cost of excess facilities will be at the expense of the customer to remediate. Larger than 5 horsepower May be permitted with Company approval if:  Company facilities are adequate to supply the service and  The use of such motor does not interfere with quality of service to other customers. Effective September 1, 2023 17 4.0 MOTORS AND SPECIAL EQUIPMENT, Continued Reduced-voltage starting requirements for the larger motors, single-phase or poly- phase, must be equivalent to the maximum allowable across-the-line starting current for smaller motors, five horsepower and under. Contact Company representative regarding any starting current limitations or information on high-efficiency motors. _________________________________________________________________ Special The installation of certain special types of equipment may have an adverse Equipment effect upon the electric service to adjacent customers. The customer is responsible for any cost associated with alleviating adverse effects caused by the installation of special equipment. Types of special equipment in this category include, but are not limited to:  Grain bin motors  Welders  X-ray equipment  Diathermy equipment  Radio transmitters  Geothermal heat pumps  Tankless water heaters Prior to installation, contact Company representatives to determine if any specific installation requirements are necessary. ________________________________________________________________ Power Factor A low power factor in a customer's electric system produces an adverse effect on the:  Company's electric supply system and  Customer's electrical equipment Continued on next page Poly-phase Motor Guideline Larger than 5 hp operated from single-phase service by use of phase converter May be allowed only with Company approval 15 horsepower and over May be permitted with Company approval if:  Company facilities are adequate to supply the service and  The use of such motor does not interfere with quality of service to other customers. Company may require customer to limit the motor starting current by use of reduced voltage starters or other acceptable means. Effective September 1, 2023 18 4.0 MOTORS AND SPECIAL EQUIPMENT, Continued Additional charges may be imposed on the customer when the customer's power factor falls below a specified limit, as stated in the rate schedules of the Company's tariff. It may be cost-effective for the customer to install high power factor equipment and/or capacitors to maintain an acceptable power factor. Contact your Company representative for information regarding power factor correction techniques. ________________________________________________________________ Load Balance If poly-phase service is provided, the customer must maintain reasonable electrical balance between the phases as measured at the meter. Effective September 1, 2023 19 ________________________________________________________________________ To avoid unnecessary expenses or delays, the customer is required to contact a Company representative before construction or remodeling begins. ________________________________________________________________________ For residential services, the customer must submit the following to a Company representative:  A completed service application  Must post address prior to installation of service  Site must meet requirements identified on the service application For all service other than residential (single family or duplex), the customer must submit the following to a Company representative:  A minimum of two sets of  Plot plans  Building elevations  Electrical service entrance diagrams  Connected load  Anticipated demand  An electronic copy of site plan in CAD file  A completed service application  Must post address prior to installation of service These items will be used to discuss the most economical and mutually beneficial service location. ________________________________________________________________________ A Company representative will submit an agreement or proposal to the customer to be signed and returned. ________________________________________________________________________ A Company representative will discuss and determine the service location with the customer or their representative. The Company may refuse connection to any service entrance not installed in an approved location. ________________________________________________________________________ Continued on next page Company Customer Responsibility Service Agreement Service Location 5.0 SERVICE INFORMATION Effective September 1, 2023 20 5.0 SERVICE INFORMATION, continued _______________________________________________________________________ If a customer contribution is required, a Company representative will make arrangements with the customer for payment. _______________________________________________________________________ When the installation is ready for service, the customer should contact the Company and, if required, the appropriate governmental authority to request inspection(s). When accepted by a Company representative and, if required, approved by the appropriate governmental authority the service and meter will be installed. _______________________________________________________________________ The customer should provide an approximate need date for installation. MidAmerican Energy personnel will inspect site for readiness and, if appropriate, will schedule work to be done. The customer is responsible to have site ready for construction by completing the following items:  Address must be clearly posted at property.  All necessary easements and permits for electric utilities that are required to be obtained by customer have been obtained and staked, where applicable  Ground must be within four (4) inches of final grade where Company facilities are to be installed.  Foundation or meter site must be backfilled and properly compacted to prevent settling.  All material and obstructions must be removed from path where Company facilities are to be installed.  The location of any customer-owned underground facilities (i.e. fuel lines, sanitary sewer/septic lines, sump pump lines, watering systems, satellite TV cables, etc.) must be identified and clearly marked.  The customer is required to maintain all erosion control. _______________________________________________________________________ Service to vacation and recreational vehicle parks will normally be:  Supplied through one metering installation or as determined by Company representative.  Billed to the park owner/operator on the applicable general service or commercial/industrial rate. Any variation to the above will require approval by a Company Representative. Service will be extended as provided in the Company's tariff. _______________________________________________________________________ Nothing shall be attached to Company poles without a contractual agreement with the Company. Customer Contribution Inspection and Approval Requirements For Scheduled Work For Service Recreational Vehicle Parks Pole Attachments Effective September 1, 2023 21 _______________________________________________________________________ Unless stated otherwise in the rate, price schedule, or tariff, the Company will normally permit only one service per structure. _______________________________________________________________________ Section 230.70 of the NEC requires a service to have a disconnecting means. The main switch and fuses or circuit breakers shall be of ample capacity to:  Carry the load  Safely interrupt the available fault current at the particular location If fault current information is required, contact your Company representative for the available fault current. If the customer's load is larger than that which can be protected with standard fusing, the customer will be required to install a disconnecting means acceptable to the Company. _______________________________________________________________________ The service disconnecting means shall be installed at a readily accessible location per NEC and shall comply with applicable local electrical codes, and shall be:  Outside of the building or structure, or  Inside nearest the point of entrance of the service conductors, or  On the meter pole when applicable. _______________________________________________________________________ An overcurrent device (fused or breakered):  May not be required adjacent to the metering point, but  Shall be installed in accordance with the NEC at each entrance served through the meter. _______________________________________________________________________ The customer must provide, install and maintain the additional equipment necessary for the service, including the meter socket and any required weatherproof placards. The customer must provide a service attachment of adequate strength to support the Company's service conductors. (NEC Section 230.27, 230.28, 230.29). See Figures 3 and 4. _______________________________________________________________________ Continued on next page 6.0 SERVICE AND SERVICE ENTRANCES (General) One Service Disconnection Means Location of Disconnection Means Overcurrent Device Customer Supplied Equipment Effective September 1, 2023 22 _______________________________________________________________________ It is recommended that customer-installed service conductor ampacity be matched to the main breaker size. The minimum size allowed for service entrance conductors is #8 AWG. Although it is not recommended, the grounded neutral may be reduced in ampacity in accordance with the NEC. However, if the neutral is reduced more than two sizes, calculations justifying the reduction must be accepted by the Company. The grounded neutral may be bare copper conductor or may be insulated and marked with a white or natural gray color. (NEC Section 200.6, 200.7, 230.41). Reference pg. 34 for allowable conductor size. _______________________________________________________________________ All service entrance equipment shall be UL listed. Meter sockets shall meet Company specifications and shall be UL Listed. See Appendix A. Contact your Company representative for an approved meter socket list or see MidAmerican Energy website https://www.midamericanenergy.com/media/pdf/approved- socketlist-midam.pdf Service entrances for residential customers shall have a rated ampacity of at least 100 amperes at 120/240 volts, three-wire, single-phase. A minimum 200 amp meter socket is required for all underground residential services smaller than 200 amps. If the service size is 400 amps or less, self-contained metering will be used. _______________________________________________________________________ Only service entrance conductors shall be installed in the service entrance conduit. Service entrance conductors shall not exceed 10 per phase. The service drop and attachment point shall not be enclosed within any buildings, alteration, facade or addition. The point of attachment shall be on the side of the structure adjacent to the distribution facilities. _______________________________________________________________________ If changes occur to a customer's property, such as grade changes or construction of decks or garages, which result in inadequate clearance, the customer will be required to relocate or bring the service into compliance with current NEC and/or NESC requirements. Refer to Figures 1 and 2. _______________________________________________________________________ Continued on next page 6.0 SERVICE AND SERVICE ENTRANCES (General), continued Conductor Sizing Equipment Specifications Service Entrance Conductors Clearance Requirements Effective September 1, 2023 23 6.0 SERVICE AND SERVICE ENTRANCES (General), Continued _________________________________________________________________ Meter All meter and related metering equipment locations shall be approved by the Location Company. Unless Company approval of an exception is given, all meters and related metering equipment must be:  Installed outside and securely attached to a permanent structure  Located on the front half of the structure  Accessible to Company employees  Protected from physical damage  Provided with adequate traffic protection, if deemed necessary by the Company  Separated from a source of combustion by at least 3 feet  In compliance with Figure 1  A weatherproof placard with minimum 3/4 inch etching lettering labeling the address of service must be installed on standalone meter structures. _________________________________________________________________ Meter Poles If a meter pole is used, it shall be:  Owned and installed by the customer (except for primary-metered customers)  In a location mutually agreed upon between the customer and the Company  In an accessible location out of the way of traffic _________________________________________________________________ Meters Not Meters shall not be installed on a trailer, mobile home or any building not On Permanent on a permanent foundation. Buildings Typical meter installations for these applications are referenced in Figure 14 for meter pedestal and Figure 15 for meter pole. _________________________________________________________________ Meter A clear working space of not less than: Clearances  36 inches in front of the meter  30 inches wide must be maintained at all times or the meter will be relocated at the customer's expense. (NEC Section 110.26) _________________________________________________________________ Multiple Upon prior approval from the Company, two meter sockets installed on a duplex may Meters be separated. Three or more meter sockets installed on the same building must be grouped. Unused meter sockets shall have a plastic protective cover and shall be sealed. Before service is energized, the following information, where applicable, must be plainly marked on each meter socket cover, socket back plate, and associated breaker or fuse panel with a weatherproof placard with min. 3/4” etched writing.  Apartment numbers  Duplex numbers  House meter  Water heater, etc. Identification and marking of these meter sockets and the breaker or fuse panel for each individual unit or apartment, is the responsibility of the customer. See Figures 24 and 26. Effective September 1, 2023 24 ________________________________________________________________________ The Company will install, operate and maintain all overhead facilities located between the customer's property line and the first point of attachment to the customer's building or other structure. ________________________________________________________________________ The customer shall install, own, operate, and maintain all overhead facilities beyond the meter ________________________________________________________________________ Attachment of the customer's metering equipment and distribution wiring will not be allowed on Company poles without a contractual agreement including an acceptable hold harmless provision with the Company. Service entrance conductors, between the weatherhead and the main disconnect, must be installed in conduit and will extend 36 inches beyond the weatherhead. Where not accessible by a service truck, overhead service attachment must not exceed 18’ above ground level. The service drop should not cross adjoining property or livestock areas. Conduit must be installed between the meter socket and main disconnect. Check with your Company representative concerning service and metering applications over 600 volts. Reference pg. 34 for allowable conductor size. The use of any conduit body fitting (LB, LL, LR, etc.) ahead of the meter is prohibited. ________________________________________________________________ 6.1 OVERHEAD SERVICE Company Responsibility Customer Responsibility Requirements Effective September 1, 2023 25 _________________________________________________________________________ Underground service to individual residential dwellings and duplexes will normally be installed, owned and maintained by the Company. The Customer has the option to install a residential service initially per the requirements below and in Appendix G. The service will become the property of the Company once the service is approved and placed in service. This includes individual residential structures on zero-lot line properties. Services to residential multi-plex structures (more than two residential units on a connected structure) will be furnished, installed, owned and maintained by the Customer. Meters must be grouped with multi-meter equipment unless required by the local jurisdiction to be split out to individual meters per unit. Individual services on a multi-plex structure will be furnished, installed, owned and maintained by the Customer. For zero-lot line residential structures, the customer is required to install a conduit system for all primary and secondary cable routes in a manner satisfactory to the Company. _________________________________________________________________________ Upon prior approval from the Company, the customer may be allowed to make the underground service installation.  Customer-installed, Company-owned cable shall be approved by and installed in a manner satisfactory to the Company. All cable must be installed between 30” and 42” below final grade.  Customer-installed residential and duplex underground services will be owned and maintained by the Company per applicable tariff.  The customer will be required to pay the applicable income tax surcharge.  Customer-installed, Company-owned cable MUST match service size conductor referenced in Appendix G Section 5.1. Incorrect wire types will be re-installed by the company at the customer’s expense.  The customer or contractor must call the Company and schedule a site review after the service cable is installed. Both ends of the trench, at the electric meter and at the Company’s enclosure, must be left open for the review. Ends of the red marking tape must be exposed at both ends of the trench. The bottom end of the riser pipe must be visible at the meter end of the trench.  See Appendix G for more information on customer installed residential services. _________________________________________________________________________ Underground commercial, industrial, and “other” services will be furnished, installed, owned and maintained by the Customer. Other services include residential multi-plex structures (a structure containing more than two residential units), second service to a detached garage, pole buildings, and any service not defined as a residential service. The Customer will install per NEC requirements, the Company will terminate and make final connections in the transformer. _________________________________________________________________________ Underground services for mobile home parks will be furnished, installed, owned and maintained by the Customer. _________________________________________________________________________ Underground network services are normally furnished, installed, owned and maintained by the Company. Please contact local engineering to determine if network service is available in your area. _________________________________________________________________________  A slip sleeve or expansion joint shall be furnished and installed by the customer on all new and rewired underground residential services and recommended for all commercial services.  An expansion joint shall be a minimum twelve (12) inch length Schedule 80 PVC installed at the bottom of the meter cabinet. Continued on next page Residential Service Customer- Installed, Residential Service Commercial, Industrial and Other Services Mobile Home Park Services Network Services Ground Movement 6.2 UNDERGROUND SERVICE Effective September 1, 2023 26 ______________________________________________________________________ Consult your local governing authority regarding placement of transformers adjacent to buildings and building openings. It is necessary to have adequate and unobstructed space for the installation and maintenance of padmounted transformers. Minimal clearances are shown in Appendix B-1 for Company installation and maintenance requirements. A 3’-0” minimum clearance is to be maintained from pad sides and back, to the nearest structure. A level graded, 10’-0” minimum clearance is to be maintained from the front of the pad, to the nearest fixed structure. When traffic protection is necessary, contact local distribution engineering for requirements. ______________________________________________________________________ Pads for single-phase transformers will be furnished and installed by the Company Three-phase transformer pads must be:  Installed by the customer at the customer's expense  Constructed in a location approved by the Company, with hard surface truck access and unobstructed work space for large vehicles. Truck access is to be permanently maintained by customer. See concrete pad specifications in Appendix B. Contact the appropriate Company office for an inspection after the framework is placed. A two business days notice shall be given to the Company for this inspection. ______________________________________________________________________ Sufficient cable shall be left at the base of the service riser pole to connect to the Company's overhead system. The dimensional limitations and acceptable arrangements of conduit exits are shown on Figure 9. ______________________________________________________________________ Conduit must be installed between the meter socket and main disconnect. The use of any conduit body fitting (LB, LL, LR, etc.) ahead of the meter is prohibited. Placement of Transformer Transformer Pads UG Service Installed by Customer in OH Areas Requirements 6.2 UNDERGROUND SERVICE, continued Effective September 1, 2023 27 ______________________________________________________________________ The Company will normally permit only one service per communication tower site, regardless of the number of tower users. The tower owner is required to install sufficient meter positions when the first tenant goes on the tower to accommodate all possible tenants. Label each position as Unit #1 or A, etc… Do not use tenant names as tenants may change. Minimum four gang multi-meter pack required for new tower installations. (See Figure 24 & 26) Metering shall be made accessible to Company personnel. Metering shall be installed in one of the following ways:  Outside of the customer’s secured area.  Inside a common fenced area or a separately fenced area and provide provisions for a Company padlock.  Working space in front of service entrance equipment and meter sockets shall be in 36” in front and 30” wide. See page 23 for Meter Clearances. Communication Tower Service 6.2 UNDERGROUND SERVICE, continued Effective September 1, 2023 28 ______________________________________________________________________ All Company-owned polyphase cables (primary and secondary) installed on commercial/ industrial customer property must be installed in a Company approved, customer provided conduit system, which may include manholes or vaults. ______________________________________________________________________ Customers requiring single-phase service will be required to install conduit for the following conditions:  Under existing or likely future hard surface areas  Where area available for trenching is limited by any of the following:  Less than 10 feet clear width  Less than 10 feet clear height  Slope greater than 1 to 3  Distance between paved areas is less than 50 feet  Where the edge of the non-trenchable surface on property line is parallel to and within 5 feet of the structure foundation  Where a single corridor is used for multiple utilities  Where existing or future landscaping or obstructions will make cable installation, location and repair difficult  Where a developer is paving a street with islands or medians, and it is necessary to install cable (either street lighting or primary)  New subdivisions, when required by the company ______________________________________________________________________ Polyphase Customers Single-Phase Customers Typical Conduit Requirements (All Customers) 6.3 UNDERGROUND CONDUIT Size: Number: Material: Riser: Color: Local distribution engineering must be contacted before installation to review conduit plan and discuss inspection requirements. The use of any conduit body fitting (LB, LL, LR, etc.) ahead of the meter is prohibited. Continued on next page single-phase primary - 2 inch three-phase primary 4/0 or smaller - 4 inch three-phase primary 500 kcmil or larger - 6 inch single-phase secondary 1/0, 4/0 and 350 - 4 inch single-phase services 1/0, 4/0 - 2.5 inch single-phase services 350 kcmil - 3 inch one for residential, local distribution engineering’s discretion for commercial/ industrial schedule 40 PVC stick or coilable, schedule 40 HDPE coilable, or SDR 13.5 HDPE coilable. Fiberglass stick conduit may be permitted if reviewed by local distribution engineering. service riser conduit must be galvanized rigid or schedule 80 PVC. Either rigid conduit risers or box outs must be used where underground service risers will be surrounded by concrete to avoid frost heave. gray, or black with red stripe only, no other colors allowed Effective September 1, 2023 29 Sweep Requirements (All Customers) Installation Requirements (All Customers) Ground Movement 6.3 UNDERGROUND CONDUIT, Continued _______________________________________________________________________ Conduit materials and installation methods must be acceptable to the Company.  All conduit depth measurements are from finished grade.  Conduit for primary cables shall have a minimum cover of 42 inches and maximum cover of 48 inches.  Conduit for secondary and streetlight cables shall have a minimum cover of 30 inches and maximum of 42 inches.  Customer will install a synthetic pull tape of 500 lbs. test in the conduit. Pull tape shall be one continuous pull type, and may not be multiple pieces tied together.  Customer will seal off conduit with a conduit cap glued to end of pipe and mark it with a stake. A Company supplied locator ball may be required in addition to a stake.  The bottom of the trench in which the conduit is placed should be relatively smooth, undisturbed earth, well-tamped earth or sand.  No more than 270° in a pull.  Openings in manholes for new conduit installations need to be grouted in or installed with hydraulic cement to prevent debris entering manhole. This seal must be inspected by an Company representative before the trench is backfilled.  Conduit shall be cut down to 3” above grade when being installed in a fiberglass transformer basement or enclosure basement.  Trenches must be inspected by a Company representative before being backfilled. The customer may choose to install the service entrance at a location on the building that eliminates the necessity for Company cables to be in conduit. The location must meet the requirements of Section 6.0 of this manual. Reference Appendix G for other installation instructions. Where the customer owns and maintains the service, the requirements to install the conduit may be waived by the Company. ________________________________________________________________  A slip sleeve or expansion joint shall be furnished and installed by the customer on all new and rewired underground residential services and recommended for all commercial services.  An expansion joint shall be a minimum twelve (12) inch length Schedule 80 PVC installed on the conduit riser. Material: Radius: fiberglass, or steel (which must be grounded), or HDPE coilable with special approval. Sweeps must be burn-proof (exceeding burn resistant rating) and steel sweeps must include ground lugs and must be bonded where exposed, per the NEC. 3” or less - 36” sweep over 3” - 48” sweep _______________________________________________________________________ Effective September 1, 2023 30 _________________________________________________________________________ Primary metering is required ahead of any customer-owned primary facilities. The Company will provide and install the following:  Primary service drop conductors  Primary meter pole  Meter socket  Instrument transformers  Meter grounding  Meter  Meter wiring Location and design of the metering shall be referred to appropriate Company technical personnel. See local distribution engineering for pole location. The primary meter pole will be located at the property line. The design of the customer's primary system should be submitted to the Company representative for approval by appropriate technical personnel. _________________________________________________________________________ The customer will have the following responsibilities:  Install and maintain overhead conductors beyond the primary meter pole.  Maintain proper clearances in accordance with the NESC.  Own, install and maintain a group operated visible break disconnecting means and over current protection immediately beyond the metering pole. The use of a fuse as a disconnecting means will be permitted for single-phase, primary metered services.  Ensure that all wiring and equipment installed beyond the meter are in accordance with the NESC in addition to the requirements of the NEC.  Reference Figure 37 for additional details _________________________________________________________________________ Company Responsibility Customer Responsibility (For Untrans- Formed Service Voltages) 6.4 OVERHEAD PRIMARY METERING (Over 600 volts) Effective September 1, 2023 31 6.5 UNDERGROUND PRIMARY METERING (Over 600 volts) ________________________________________________________________________ Provided by The Company will provide and install the following: Company  Primary underground conductors between the Company's distribution system and the first point of attachment in the customer-supplied switchgear  Meters The Company will provide instrument transformers for metering, which are to be installed by the customer. ______________________________________________________________________ Provided by The customer must provide, in a Company-approved location: Customer  Company-approved enclosed upright or padmount switchgear  Fuses  Grounding bails  Metering cubicle  Concrete pads  Conduits Reference Figure 37 for additional details. ______________________________________________________________________ Clearances The customer must maintain adequate clearances around the switchgear for operating purposes. These clearance requirements will be determined by Company technical personnel and meet minimum NESC requirements. ______________________________________________________________________ Customer In the design, purchase, and installation of the switchgear package, close coordination Switchgear is necessary between the customer, switchgear manufacturer and Company personnel. The customer must furnish a minimum of three copies of the switchgear drawings and site plan for Company engineering approval. A letter of agreement between the Company and the customer is recommended before the switchgear is ordered. ______________________________________________________________________ Wiring The customer must provide and install all wiring connected to and beyond the metal-clad switchgear according to the NESC in addition to the requirements of the NEC. ______________________________________________________________________ Continued on next page Effective September 1, 2023 32 6.5 UNDERGROUND PRIMARY METERING (Over 600 volts), Continued _____________________________________________________________________ Transformers For any new primary metering, the customer must furnish, own, maintain, and Beyond operate all transformers located beyond the first point of attachment. Primary Metering Padmount transformer installations should be in accordance with Appendix B. All indoor, rooftop, or specialty transformers must be furnished and maintained by the customer. ______________________________________________________________________ Company- For existing primary metered customers, the Company may provide standard Owned distribution transformers located beyond the first point of attachment. Transformers The customer must provide primary fusing determined to be necessary by the Company to protect Company transformers. The Company will provide loadbreak bushing inserts for Company-owned padmount transformers. All Company transformers will be located in an area accessible to Company vehicles and will meet the clearance requirements of the NESC. ______________________________________________________________________ Effective September 1, 2023 33 7.0 CONDUCTOR IDENTIFICATION ______________________________________________________________________ Neutral Neutral conductor identification shall be in accordance with NEC Conductor Section 200.6. A neutral conductor may be uninsulated in accordance with NEC Section 230.41, except for neutral jumpers as indicated in Figures 27, 29, 30, 31 and 32. ______________________________________________________________________ High Phase High phase (wild leg) conductor identification shall be marked orange or by Conductor other effective means and shall be in accordance with NEC Section 110.15 and Section 230.56. The high phase (wild leg) conductor must be located on the RIGHT HAND TERMINALS OF SELF-CONTAINED METER SOCKETS. See Figure 30 of this book and NEC Section 408.3(e). ______________________________________________________________________ Multiple When multiple conductors per phase are needed for a service, the phase wires Conductors must be identified with colored tape so the proper grouping can be determined. Per Phase The tape must be installed below the termination height so the grouping remains identifiable after cutting the cables to their final height. Contact a local distribution engineering representative if more than three sets of service conductors are to be installed. Single-phase services will be limited to 500 kcmil conductor. Contact local distribution engineering if using conductor larger than 350 kcmil to ensure proper secondary terminals are installed. ______________________________________________________________________ Insulated Neutral Identification No. 6 or smaller An insulated grounded conductor of 6 AWG or smaller shall be identified by a continuous white or gray outer finish or by three continuous white stripes on other than green insulation along its entire length. Larger than No. 6 An insulated grounded conductor larger than 6 AWG shall be identified either by a continuous white or gray outer finish or by three continuous white stripes on other than green insulation along its entire length or at the time of installation by a distinctive white marking at its terminations. This marking shall encircle the conductor or insulation. Effective Septe