Transcription
ELECTRICSERVICE MANUAL
REVISIONS MADE TO THE 2020 ELECTRIC SERVICE MANUAL2020 MANUAL PAGESECTION2Introduction206.0 Service and Service Entrances(General)6.0 Service and Service Entrances(General)21ITEMREVISIONAdditional Copies of the Electric Changed sentence to read: "For additional copies of the 2020 ElectricService ManualService Manual, contact your Company representative. An electronicversion of the 2020 Electric Service Manual is also available online atwww.midamericanenergy.com, under the "Contractor Training andSafety" tab.Conductor SizingAdded Sentence: "Reference pg. 31 for allowable conductor sizes."Multiple MetersChanged first sentence to read: "Upon prior approval from theCompany, two meter sockets installed on a duplex may be separated.Three of more meter sockets installed on the same building must begrouped."Changed third sentence to read: "Before service is energized, thefollowing information, where applicable, must be plainly marked oneach meter socket cover, socket back plate, and associated breaker orfuse panel with a weatherproof placard with etched writing."216.0 Service and Service Entrances(General)Multiple Meters226.1 Overhead ServiceCustomer Responsibility226.1 Overhead ServiceRequirements226.1 Overhead ServiceRequirements246.2 Underground ServiceRequirements256.3 Underground ConduitSingle‐phase Customers256.3 Underground Conduit256.3 Underground ConduitTypical Conduit Requirements(All Customers)Typical Conduit Requirements (AllCustomers)266.3 Underground ConduitInstallation Requirements (AllCustomers)Added bullet point "Openings in manholes for new conduit installationsneed to be grouted in or installed with hydraulic cement to preventdebris entering manhole. This seal must be inspected by an MECrepresentative before the trench is backfilled."266.3 Underground ConduitInstallation Requirements (AllCustomers)Changed 5th bullet to read "Customer will seal off conduit with aconduit cap glued to end of pipe and mark it with a stake. A Companysupplied locator ball may be required in addition to a stake.266.3 Underground ConduitNEW - Ground Movement266.3 Underground ConduitNEW - Ground Movement266.3 Underground Conduit266.3 Underground ConduitInstallation Requirements (AllCustomers)Conduit Requirements (AllCustomers)A slip sleeve or expansion joint shall be furnished and installed by thecustomer on all new and rewired underground residential services andrecommended for all commercial services.Add bullet point: "An expansion joint shall be a minimum eighteen (18)inch length Schedule 80 PVC installed at the bottom of the metercabinet."Fourth bullet point now reads: "Customer will install a synthetic pulltape of 500 lb. test in the conduit."Conduit Sizes are not: single phase primary - 2 inch; three phaseprimary 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 phaseservices 1/0 - 2.5 inch; single phase services 4/0, 350 kcmil - 3 inch256.3 Underground Conduit266.3 Underground Conduit307.0 Conductor IdentificationMultiple Conductors Per Phase318.0 Service Conductor Sizes andConnections8.0 Service Conductor Sizes andConnectionsConductor Sizes3131Typical Conduit Requirements(All Customers)Installation Requirements (AllCustomers)Connectors Furnished358.0 Service Conductor Sizes andConnections10.0 Standby Generator ServiceCustomer ConnectionsGeneral3510.0 Standby Generator ServiceParallel Generation3611.0 Parallel Generation OperationUpdated Section 11.038Minimum Clearances for Service 480V and BelowSection D39Minimum Clearances for Service 480V and BelowFigure 1Changed sentence to read: "The customer shall install, own, operate,and maintain all overhead facilities beyond the meter."Added Sentence: "Reference pg. 31 for allowable conductor sizes."Added Sentence: "The use of any conduit body fitting (LB, LL, LR,etc.) ahead of the meter is prohibited."Added Sentence: "The use of any conduit body fitting (LB, LL, LR,etc.) ahead of the meter is prohibited."Added bullet point: "New subdivisions when required by the company"Moved section from pg. 26 to pg. 25Changed sentence to read: "Local Engineering must be contacted beforeinstallation to review conduit plan and discuss inspection requirements.Added Sentence: "The use of any conduit body fitting (LB, LL, LR,etc.) ahead of the meter is prohibited."Added 9th bullet point: "Conduit shall be cut down to 3" above gradewhen being installed in a fiberglass transformer basement or enclosurebasement."Added sentence: "Contact a local Company representative if more than3 sets of service conductors are to be installed."Added Sentence: "Contact a local company representative forquestions regarding allowable conductor sizes."Changed sentence to read: "The Company will furnish and installconnectors to attach standard service conductors to the source ofpower at Company owned transformers or Company owned secondaryenclosures."Changed 2nd bullet to read: "Lugs may not be stacked for anyapplication."Now Reads: "The Company will allow a customer to have standbygenerators for temporary or emergency electric service; suchinterconnections must adhere to “Technical Requirements forInterconnection of Generation to the MidAmerican Energy CompanyDistribution System” (“TRIMECS”)."Now Reads: "For the safety of Company personnel, as well asprotection of the customer’s Operation equipment and other customers’equipment, there must be a positive means to guarantee that thestandby generator cannot accidentally be connected in parallel to theCompany's system."Section 11.0 covering parallel generation operation has beenexpanded to include more information on MEC requirements.Changed sentence to read: "The diagonal distance from the nearestedge of a balcony or deck floor that is readily accessible to the serviceconductor shall be 10 feet minimum."Changed clearance D to point at the floor of the deck
REVISIONS MADE TO THE 2020 ELECTRIC SERVICE MANUAL2020 MANUAL PAGESECTIONITEMREVISION43Typical Overhead Service MastRequirementsApplication and Conditions forAbove Table - Item 545Figure 5A46Clearance for Conductors InstalledOver or Near Swimming Areas(Reference NESC 234E)Grounding RequirementsFigure 6 Notes - Item 346Grounding RequirementsFigure 6 Notes - Item 346Grounding RequirementsFigure 6 Notes - Item 646Grounding RequirementsFigure 6 Notes - Item 4Changed first sentence to read: "Concrete-encased electrode (UferGround), when used, shall be encased by at least 2 inches of concrete,located within and near the bottom of a concrete foundation or footingthat is in direct contact with the earth, consisting of at least 20 feet ofone or more bare or zinc galvanized or other electrically conductivecoated steel reinforcing bars or rods of not less than 1/2 inch indiameter, or consisting of at least 20 feet of bare copper conductor notsmaller than 4 AWG."47Grounding RequirementsFigure 650Underground Conduit Installations atRisersUnderground Conduit Installations atRisersFigure 9Add note: "The grounding electrode conductor may not be run throughthe meter socket."Added Item 9: "Conduit will be installed flush against the rground Conduit Installations atRisersUnderground Conduit Installations atRisersUnderground Conduit Installations atRisersUnderground Conduit Installations atRisersTypical Underground ResidentialServiceTypical Underground ResidentialServiceTypical Underground CommercialIndustrial Service with Self-ContainedMeterTypical Underground CommercialIndustrial Service with Self-ContainedMeterTypical commercial-industrial serviceentrance metering with cabinetmounted instrument transformerspreferred installationTypical Group Metering Six or LessMeters Factory FabricatedFigure 9Figure 9Figure 9 - Item 3Figure 9 - Drawing (b)Figure 9 - Typical Side ViewFigure 13Figure 13Figure 20Added Sentence: "Ground rod placement shall take into considerationthe direction the service conductor will be installed from to avoiddamage.Changed fourth sentence to read: "NEC Section 250.60 prohibits usinga lightning rod grounding electrode as one of the electrodes listedabove."Changed sentence to read: "The service grounding electrode conductorshall be connected to the neutral bus in the service disconnect orovercurrent device, but may not be connected in the meter socket."Added Item 10: "Where possible, conduit will be landed on the polequartered away from the communications, secondary, or neutralattachment."Added drawing (C)Changed sentence to read: "Conduits are to be installed so that the topend is 3" above final grade."Updated note to read: "6" MAXIMUM CONDUIT SIZE (15" MIN.BETWEEN CONDUITS)"Added note to leave conduit 3" above grade.Added notation to graphics: "Minimum 18" schedule 80 PVC ExpansionJoint installed at the bottom of the meter cabinet."Added Sentence: "See Appendix G (pg. 107) for details onunderground service installations."Added notation to graphics: "Minimum 18" schedule 80 PVC ExpansionJoint installed at the bottom of the meter cabinet."Figure 20Add Item 3: "A 36” x 36” handhole that is 8" below the bottom of theconduit riser immediately adjacent to the base of the enclosure must behand dug by the customer/contractor (see Appendix G)."Figure 22 Notes - Item 2Added Sentence: "The contractor shall mark line and load conductorswithin any CT cabinet.Figure 24 - Item 4Now reads: "Apartments or suites shall have identical marking on theentry door, meter socket, and fuse or breaker panel. A weatherproofplacard with etched writing shall be used."Now reads: "Apartments or suites shall have identical marking on theentry door, meter socket, and fuse or breaker panel. A weatherproofplacard with etched writing shall be used."Added sentence: "Fused disconnects must be lever operated. Pull outstyle fused disconnects will not be allowed. All fuses for fuseddisconnects on 480V services must be supplied by the customer."Typical Group Metering for More than Figure 26 - Item 4Six Meters or Any Meters in NetworkAreas Factory FabricatedSelf-Contained Meter Socket Wiring 3- Figure 31 - Item 4Phase 277/480 V, 4-Wire, 400 A orLessInstrument Transformer MeteringGreater Than 400 AInstrument Transformer Wiring 1Phase 120/240 V, 3-Wire Greater than400AInstrument Transformer Wiring 1Phase 120/240 V, 3-Wire Greater than400AInstrument Transformer Wiring 1Phase 120/240 V, 3-Wire Greater than400AInstrument Transformer Wiring 1Phase 120/240 V, 3-Wire Greater than400AChanged last sentence to read: "Conduits of different sizes below thesoffit line may not be "slip fit" together and must be joined with anapproved electrical conduit reducer (RE, REA, REC) and approved bythe local jurisdictional authority."Added drawings and clearances for Above Ground PoolsFigure 33Added drawing to illustrate working space in front of meter.Figure 34 - Item 5Added Sentence: "The contractor shall mark line and load conductorswithin any CT cabinet.Figure 34Changed Source to LineFigure 34Changed wording of drawing to read: "1" metal conduit to weatherheador instrument transformer enclosure (35 circuit ft. max) See Fig. 33"Figure 34Changed point 7 to read: "The neutral shall be available in theinstrument transformer enclosure for connection of the meter potentialleads. A single 12 guage neutral wire must be bonded inside theenclosure."Updated drawing to show a 4-hole lug for the neutral bar.Instrument Transformer Wiring 1Figure 34Phase 120/240 V, 3-Wire Greater than400ATypical commercial-industrial service Figure 35 - Item 5entrance metering with cabinetmounted instrument transformerspreferred installationAdded Sentence: "The contractor shall mark line and load conductorswithin any CT cabinet.
REVISIONS MADE TO THE 2020 ELECTRIC SERVICE MANUAL2020 MANUAL SECTIONInstrument Transformer Wiring 3Phase 120/240 V, 4-Wire Delta; 3Phase 120/208 V, 4-Wire Wye; 3Phase 277/480 V, 4-Wire GreaterThan 400 AInstrument Transformer Wiring 3Phase 120/240 V, 4-Wire Delta; 3Phase 120/208 V, 4-Wire Wye; 3Phase 277/480 V, 4-Wire GreaterThan 400 AInstrument Transformer Wiring 3Phase 120/240 V, 4-Wire Delta; 3Phase 120/208 V, 4-Wire Wye; 3Phase 277/480 V, 4-Wire GreaterThan 400 AInstrument Transformer Wiring 3Phase 120/240 V, 4-Wire Delta; 3Phase 120/208 V, 4-Wire Wye; 3Phase 277/480 V, 4-Wire GreaterThan 400 AInstrument Transformer Wiring 3Phase 120/240 V, 4-Wire Delta; 3Phase 120/208 V, 4-Wire Wye; 3Phase 277/480 V, 4-Wire GreaterThan 400 AInstrument Transformer Wiring 3Phase 120/240 V, 4-Wire Delta; 3Phase 120/208 V, 4-Wire Wye; 3Phase 277/480 V, 4-Wire GreaterThan 400 AInstrument Transformer Wiring 3Phase 120/240 V, 4-Wire Delta; 3Phase 120/208 V, 4-Wire Wye; 3Phase 277/480 V, 4-Wire GreaterThan 400 AInstrument Transformer Wiring 3Phase 120/240 V, 4-Wire Delta; 3Phase 120/208 V, 4-Wire Wye; 3Phase 277/480 V, 4-Wire GreaterThan 400 AInstrument Transformer Wiring (VTPack) 3-Phase 120/240 V, 4-WireDelta; 3-Phase 120/208 V, 4-WireWye; 3-Phase 277/480 V, 4-WireGreater Than 400 ARequirements for meter mountingequipmentSpill Prevention, Control andCountermeasures (SPCC) Plans andOil Containment for CustomerFurnished Pads for 3-Phase PadMounted Transformers (All Sizes)Construction Details CustomerFurnished Pads for 3-Phase PadMounted Transformers 75-500 kVAConstruction Details CustomerFurnished Pads for 3-Phase PadMounted Transformers 750-1000 kVAITEMREVISIONFigure 35 - New ItemAdded Item 11: "A weatherproof placard with etched writing saying"480V" will be placed and all CT and PT cabinets for a 277/480Vservice."Figure 35Changed wording of drawing to read: "1" metal rigid pipe to PT cabinet"Figure 35Changed wording of drawing to read: "1" metal rigid pipe to meter andtest switch socket (35 circuit ft. max) See Fig. 33"Figure 35 - Item 8Changed to read: "Neutral shall be floating in CT cabinet with meterneutral connector for 12 gauge wire. In unusual conditions, contact yourCompany representative."Figure 35Changed note on drawing to read: "Refer to Appendix C and AppendixE for all Instrument Transformer Enclosures"Figure 35 - Item 8Changed point 8 to read: "The neutral shall be available in theinstrument transformer enclosure for connection of the meter potentialleads. A single 12 guage neutral must be bonded inside the enclosure.The neutral connector shall be UL listed and insulated from theinstrument transformer cabinet."Updated drawing to show a 4-hole lug for the neutral bar.Figure 35Figure 35 - New ItemAdded Item 14: "See Figure 36 for additional PT Cabinet (VT Pack)configurations."NEW - Figure 36Added drawings for VT Pack Instrument Transformer Wiring.Appendix A - Item 8Changed sentence to read "Residential meter sockets rated greaterthan 200 amps require a manual clamping lever bypass".Changed sentence in third paragraph: "For additional information on oilspill prevention or SPCC Plans, contact MidAmerican EnergyCompany, environmental services, at 515-281-2953."Appendix B-2Appendix B-4Appendix B-5Graphic changes: Changed graphic representation of materials tomatch industry standard. Adjusted position of notes for betterclarification.Graphic changes: Changed graphic representation of materials tomatch industry standard. Adjusted position of notes for betterclarification.Construction Details CustomerAppendix B-6Furnished Pads for 3-Phase PadMounted Transformers 1500-2500 kVAGraphic changes: Changed graphic representation of materials tomatch industry standard. Adjusted position of notes for betterclarification.Typical commercial-industrial serviceentrance metering with cabinetmounted instrument transformerspreferred installationHinged Instrument TransformerEnclosuresHinged Instrument TransformerEnclosuresHinged Instrument TransformerEnclosuresAppendix C-1 - Item 10Added Sentence: "The contractor shall mark line and load conductorswithin any CT cabinet.Appendix C-1 - NEW ItemAdded Item 14: "Installation within corrosive environments shall usefiberglass enclosures"Added Item 15: "Installations within harsh or dirty environments shalluse dust proof enclosures."Added Item 16: "A weatherproof placard with etched writing stating"480V" will be placed at all CT and PT cabinets for a 277/480Vservice."Added sentence: "Covers must include a lever for opening/closing thecabinet."Typical commercial-industrial serviceentrance metering with cabinetmounted instrument transformerspreferred installationHinged Instrument TransformerEnclosuresHinged Instrument TransformerEnclosuresHinged Instrument TransformerEnclosuresHinged Instrument TransformerEnclosuresAppendix C-1 - NEW ItemAppendix C-1Appendix C-1 - Item 8Appendix C-2Appendix C-2Appendix C-2Appendix C-2Added Sentence to bottom diagram: "The contractor shall mark lineand load conductors within any CT cabinet.Changed wording of bottom diagram: "Alternate: In the event PVCConduit is approved by local jurisdiction, enclosure must be bonded toexisting system ground."Added image and label in bottom diagram: "Required: 3/4" exteriorplywood backing"Added Specification to bottom diagram: "H1 and H2 of the PTs will beinstalled facing the CT cabinet or 480V source."
REVISIONS MADE TO THE 2020 ELECTRIC SERVICE MANUAL2020 MANUAL PAGE99100SECTIONHinged Instrument TransformerEnclosuresCurrent Transformer Enclosure SizeRequirements Greater Than 400 AITEMREVISIONAppendix C-2Updated drawing to show a 4-hole lug for the neutral bar.Appendix C-3Updated drawing to show a 4-hole lug for the neutral bar.101Current Transformer Enclosure SizeRequirements Greater Than 400 AAppendix C-4Updated drawing to show a 4-hole lug for the neutral bar.102Current Transformer Enclosure SizeRequirements Greater Than 400 AAppendix C-5Updated drawing to show a 4-hole lug for the neutral bar.103Current Transformer Enclosure SizeRequirements Greater Than 400 AAppendix C-6Updated drawing to show a 4-hole lug for the neutral bar.104Specifications for Meter Test Switches Appendix D104Specifications for Meter Test Switches Appendix D106Meter Pedestal Installation forInstrument Transformer MeteringMeter Pedestal Installation forInstrument Transformer Metering106Appendix FAppendix F - Item 1106Meter Pedestal Installation forInstrument Transformer MeteringAppendix F - New Item107Specifications for installation ofunderground residential services bycustomers or contractorsSpecifications for installation ofunderground residential services bycustomers or contractorsSpecifications for installation ofunderground residential services bycustomers or contractorsSpecifications for installation ofunderground residential services bycustomers or contractorsSpecifications for installation ofunderground residential services bycustomers or contractorsAppendix G107107108108Changed heading "6 - Pole Meter Test Switch" to "7-Pole Meter TestSwitch" and updated graphic.Add point 8: "The customer or contractor shall install the appropriatetest switch inside the meter socket for CT metering."Added drawing for structure that includes the PT Cabinet and metersocket together.Now reads: "Pedestal support - 3 inch (minimum size) standard steelpipe or galvanized steel conduit or 2 inch by 1/4 inch (minimum size)channel/angle iron."Added Item 7 that reads: "Meter pedestal will be installed outside of thecontainment moat around the transformer with a minimum 3' clearancefrom the transformer pad."Change section 3.2 to read: "Service cable shall have at lease 30" to36" of cover below final grade."Appendix GChange section 3.5 from a 24" x 24" handhole to a 36" x 36" handholethat is 8" deep when measured from the bottom of the enclosure.Appendix GAdd section 3.7: "Trenches must be inspected by an MECrepresentative before being back filled."BackfillChanged wording of section 6.2 to read: "The customer or contractor isresponsible for all backfill of trench."BackfillChanged wording of section 6.3 to read: "The Company is notresponsible for restoring settled service trenches. The customer orcontractor is encouraged to tamp backfill to minimize settling oftrenches."
TABLE OF CONTENTSPAGEIntroduction1.0 Availability And Characteristics Of Service192.0 Diversion Of Service Or Tampering113.0 Protection Of Customer Equipment124.0 Motors And Special Equipment145.0 Service Information176.0 Service And Service Entrances (General)196.1 Overhead Service256.2 Underground Service236.3 Underground Conduit256.4 Overhead Primary Metering (Over 600 Volts)276.5 Underground Primary Metering (Over 600 Volts)287.0 Conductor Identification308.0 Service Conductor Sizes And Connections319.0 Metering Equipment3210.0 Standby Generator Service3511.0 Parallel Generation Operation36Effective May 1, 2020
LIST OF DIAGRAMSFIGUREPAGE1Minimum clearances for services 480 v and below392Service conductor clearances over roofs413Typical service attachment provisions424Typical overhead service mast requirements435Clearance requirements around grain bins445aClearance for conductors installed over or near swimming areas456Grounding requirements477Allowable service conductor sizes488Underground conduit installation499Underground conduit installation at risers5010Typical overhead temporary service5311Typical underground temporary service5512Typical overhead residential service5613Typical underground residential service5714Typical underground residential service meter pedestal5915Typical rural service meter pole6116Discontinued17Standby generator provisions6218Metering sequence requirements non-residential installations6319Typical overhead commercial-industrial servicewith self-contained meter64Typical underground commercial-industrial servicewith self-contained meter65Typical commercial-industrial service entrance metering withoverhead-mounted instrument transformers for maintenance only672021Effective May 1, 2020
LIST OF DIAGRAMSFIGURE2223PAGETypical commercial-industrial service entrance metering withcabinet-mounted instrument transformers preferred installationDiscontinued69Typical group metering for six or less meters-factory fabricated7025Discontinued26Typical group metering for more than six meters or anymeters in network areas-factory fabricatedSelf-contained meter socket wiring for 1-phase 120 T, 2-wire,60 a max. And 1-phase 120/240 T, 3-wire, 100 a - 200 A27287172Self-contained meter socket wiring for 1-phase 120/240 V,3-wire, 320 a socket 400 a entrance73Self-contained meter socket wiring for 1-phase 120/208 V,3-wire, 200 A max74Self-contained meter socket wiring for 3-phase 120/240 V,and 120/208 V, 4-wire, 400 A max.75Self-contained meter socket wiring for 3-phase 277/480 V,4-wire, 400 A76Self contained meter socket wiring for 3-phase 120/208,120/240, 277/480 V, 4-wire 320A socket, 400A entrance7933Instrument transformer metering, greater than 400 A8134Instrument transformer wiring for 1-phase 120/240 V,3-wire, greater than 400 A82Instrument transformer wiring for 3-phase 120/240 V,4-wire delta, 3-phase 120/208 V, 4-wire wye 3-phase 277/480 V,4-wire, greater than 400 A832930313235Effective May 1, 2020
LIST OF APPENDICESFIGUREAPAGERequirements For Meter Mounting Equipment86Location Of Customer Furnished Pads For 3-phasePad-mounted Transformers (All Sizes)88Spill Prevention Control And Countermeasure (Spcc) andOil Containment Customer Furnished Pads For 3-phasePad-mounted Transformers (All Sizes)89Concrete Pad Specification For 3-phase Pad-mountedTransformers90Construction Details For Customer Furnished Pads For3-phase Pad-mounted Transformers 75-500 Kva94Construction Details For Customer Furnished Pads For3-phase Pad-mounted Transformers 750-1000 Kva95Construction Details For Customer Furnished Pads For3- phase Pad-mounted Transformers 1500-2500 Kva96C-1Instrument Transformer Enclosures98C-2Instrument Transformer Enclosures99C-3Current Transformer Enclosure Size Requirements,Greater Than 400 A100Current Transformer Enclosure Size Requirements,Greater Than 400 A101Current Transformer Enclosure Size Requirements,Greater Than 400 A102Current Transformer Enclosure Size Requirements,Greater Than 400 A103DSpecifications For Meter Test Switches104EOptional Combination Ct Metering Cabinet105FMeter Pedestal Installation For Instrument Transformer Metering106GSpecifications For Installation Of Underground ResidentialServices By Customers Or Contractors107HElectric Metering Information110IElectric Space Heating Device Specifications111JRevision Listings112B-1B-2B-3B-4B-5B-6C-4C-5C-6Effective May 1, 2020
ELECTRIC SERVICE MANUALINTRODUCTIONPurposeThe purpose of this manual is to supply essential information to anyone concerned withthe electrical installations of MidAmerican Energy Company (Company) customers, suchas: CustomersCustomers' torsIt is the Company's objective to cooperate with and assist customers to obtain safe,efficient electric service.CodeComplianceNothing contained in this manual shall be construed to relieve or lessen theresponsibility of the customer or the customer’s representative from complying with allapplicable codes, rules and regulations.CompanyLiabilityConsistent with the Company’s tariff, no inspection by the Company, norfailure to object to the customer’s installation, shall render the Company liable for injuryor damage resulting from any defective installation by the customer.DrawingsThe drawings and written portion of this manual supplement each other.Materials and workmanship specified or implied by one and not the other shall besupplied 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.CUSTOMERS TO CALL 48 HOURS BEFORE DIGGINGTO LOCATE UNDERGROUND FACILITIESIn Illinois call(800) 892-0123In Iowa call(800) 292-8989In South Dakota call(800) 781-7474In Nebraska call(800) 331-5666Universal Call811Continued on next pageEffective May 1, 20201
INTRODUCTION, ContinuedSafety CodesandRegulationsThe information in this manual is based on management-approvedinterpretations of the intended safe and practical applications of the following: National Electrical Code (NEC)*Regulations of the governing state's utilities commission/boardMidAmerican Energy Company tariffLocal governing authorities may impose more stringent requirements than shown in thismanual.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 ofElectrical and Electronic Engineers, Inc., New York, New York 10016. The NECis registered trademarks of the National Fire Protection Association, Inc.,Quincy, MA 02269.Manual DoesNot CoverThis manual does not cover: Electric utility installations that are under the exclusive control of the Companyfor the purpose of: nDistribution Associated work practices of the Company in the exercise of its function as autility.SpecificProblemsIf you desire to discuss specific problems not covered or resolved by thismanual, contact your Company representative.AdditionalCopies of theElectricServiceManualFor additional copies of the 2020 Electric Service Manual, contact your CompanyRepresentative. An electronic version of the 2020 Electric Service Manual is alsoavailable online at www.midamericanenergy.com, under the “Contractor Trainingand Safety” tab.Continued on next pageEffective May 1, 20202
INTRODUCTION, aIowaIowaIowaIowaIowaIowaIowaIowaIowaIowaIowaINC nAtticaAuburn (Whsle)AudubonAustinvilleAvocaAvon LakeAyrshireBadgerBarnes CityBarnumBartlettBattle CreekBeaconBedfordBeechBeeds /NorwichBlanchardBlencoeBlue rBraddyvilleBradgateBraytonBreda (Whsle)BremerBristowCOUNTYSTATEINC alo aIowaIowaIowaBronsonNo BrooksBrunsvilleBuck GroveBuffalo (Whsle)No BurnsideBusseyNo California JunctionCallender (Whsle)CalumetCamancheNo Capitol HeightsCarbonNo CarbondaleCarlisle (Whlse)No CarmelNo CarnarvonNo CarnesNo CarneyCarrollCarsonCastanaNo CedarNo ChapinCharles CityCharter OakChatsworthCherokeeNo No Climbing HillCliveNo CoalvilleCoburgCoinColfaxCollege SpringsNo ColumbiaNo CongerCoralvilleNo CorleyNo CorneliaCorrectionvilleNo CosgroveCouncil BluffsCraigCrescentCummingCushingCylinderDakota WarrenWoodburyPalo AltoHumboldtINC IncorporatedEffective May 1, 2020Continued on next page3
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43 Typical Overhead Service Mast Application and Conditions for Changed last sentence to read: "Conduits of different sizes below the Requirements Above Table - Item 5 soffit line may not be "slip fit" together and must be joined with an approved electrical conduit reducer (RE, REA, R
