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4/1/2016 Revision of the CNP Service Standards Book – (Effective Date 5-1-2016)1. Article 422.1 – Meter Pole Installations - Requirements – (Page 59).Revised paragraph - “Steel poles shall be truck accessible. The Company will not provideservice to any customer owned steel pole that is not truck accessible”.2. Articles 400 – Notes: Section - (Page 62).Revised paragraph and removed Illustrations 4.1
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POWER LINE SAFETYA foremost concern at CenterPoint Energy is the safety of our customers and employees.We exercise a great deal of care ensuring that our facilities are safe. But even with ourmany precautions, electrical contact accidents have occurred.REMEMBER, ELECTRIC POWER LINES CAN KILL!When you are working near power lines or moving tools and equipment (cranes,scaffolds, derricks, piping, etc.) near power lines, stay alert. The Texas Health and SafetyCode, Chapter 752, prohibits all activities in which persons or equipment MAY comewithin six (6) feet of energized overhead high voltage power lines, and FederalRegulations, Title 29, Part 1919.180(i) and Part 1926.550(a)(15) and 1910.333 require aminimum clearance of ten (10) feet from power lines. These laws carry both criminal andcivil liabilities. In addition, contractors and owners are legally responsible for the safetyof construction workers under these laws. If you or your company must work nearoverhead power lines, contact us at the appropriate service center location (see page 5).We will help you arrange for the lines to be deenergized and/or moved. Make your workplace a safe one, and remember to LOOK UP AND LIVE near overhead lines. Forinformation on the above or on electrical safety programs, contact CenterPoint Energy’sPublic Safety Department as listed on page 5.LAST REVISED 4-1-163
FOREWORDExperience has shown that certain standard practices are necessary to assure everycustomer of CenterPoint Energy the best possible electric service. In compiling thisedition of Service Standards for the guidance of customers, contractors, electricians,architects, and engineers, the basic purpose has been to keep them as simple andnonrestrictive as possible.These Service Standards supplement and are subordinate to the terms and conditions forthe delivery of electric service on file in the Company's offices. They are also intended tosupplement and not to be in conflict with the current edition of the National ElectricalCode, National Electrical Safety Code, or of any regulatory authority having jurisdiction.MANY PROVISIONS IN THESE SERVICE STANDARDS DISCUSS THECOMPANY’S VIEWS, BASED ON APPLICABLE CODES AND ORDINANCES,CONCERNING THE MANNER IN WHICH CUSTOMER WIRING ANDEQUIPMENT SHOULD BE INSTALLED AND MAINTAINED BY THECUSTOMER. IN EXPRESSING THESE VIEWS, THE COMPANY DOES NOTINTEND TO IMPLY THAT IT WILL INSPECT CUSTOMER WIRING ANDEQUIPMENT TO ENSURE CONFORMITY WITH THESE VIEWS.THECUSTOMER IS SOLELY RESPONSIBLE FOR INSTALLING, INSPECTING ANDMAINTAINING ALL CUSTOMER WIRING AND EQUIPMENT.The updated Service Standards are located on the CenterPoint Energy website /service-standards.pdfPaper copies will only be provided upon request.In the text, the substantial changes from the previous issue of the Service Standards have beenmarked, as this paragraph is, with a vertical line in the left margin.4
COMPANY OFFICESCustomers should contact the nearest Company Office or Service Center listed belowregarding information referred to in the Service Standards. Meter boxes required fortransformer rated installations and service anchorage bolts may be obtained from any ofthe Company service centers. Location maps of the Service Centers may be foundstarting on page 90.SERVICECENTERSCITY, STATEZIPADDRESSTELEPHONENO.BoundaryMapBAYTOWN333 Ward RoadBaytown, TX 77520(281) 425-7352P. 90BELLAIRE4300 Bissonnet BlvdBellaire, TX 77401(713) 945-4292P. 91CYPRESS18018 HuffmeisterCypress, TX 77429(281) 955-3020P. 92FORT BEND4011 Avenue HRosenberg, TX 77471(281) 341-4904P. 93GALVESTON502 27thGalveston, TX 77550(409) 765-4165P. 94GREENSPOINT2301 Gears RoadHouston, TX 77067(713) 945-4636P. 95H.O. CLARKE12045 South MainHouston, TX 77035(713) 945-4483P. 9610010 F.M. 1960 Rd. WHumble, TX 77338(713) 945-8991P. 975431 Highway Blvd.Katy, TX 77492(281) 391-5104P. 984700 South ShaverHouston, TX 77034(713) 945-6970P. 993401 BrittmooreHouston, TX 77043(713) 945-4537P. 10013300 West BellfortHouston, TX 77099(281) 561-2967P. 101HUMBLEKATYSOUTHHOUSTON(BLDG. F)SPRINGBRANCHSUGARLANDCOMPANY OFFICESCENTERPOINTTOWERPUBLICSAFETYHARRISBURG1111 LouisianaHouston, TX 77002(713) 207-1111-4700 South ShaverHouston, TX 77034(713) 945-6706-3000 HarrisburgHouston, TX. 77003(713) 207-4559-5
CONTENTSPagePower Line Safety . . . . . . . 3Foreword . . . . . . . . 4Company Offices . . . . . . . 5Table of Contents . .6-8Section 100-DefinitionsPageArticleAMS Meter . . . . . . . . 9 . 101Application for Service . . . . . . . 9 . 102Company . . . . . . . . 9 . 103Connected Load . . . . . . . . 9 . 104Customer . . . . . . . . 9 . 105Customer Extension. . . . . . . 9 . 106Customer's Installation . . . . . . . 9 . 107Customer's Service Equipment . . . . . . 9 . 108Distribution Lines . . . . . . . 9 . 109Electric Service . . . . . . . . 10 . 110Harmonics . . . . . . . . 10 . 111Manufactured Home . . . . . . . 10 . 112Meter . . . . . . . . 10 . 113Meter Mounting Devices . . . . . . . 10 . 114Meter Box . . . . . . . . 10 . 115Metering Current Transformer Box . . . . . 10 . 116Metering Potential Transformer Box . . . . . 10 . 117Meter Loop . . . . . . . . 10 . 118Mobile Home . . . . . . . . 10 . 119Modular Home . . . . . . . . 11 . 120National Electrical Code . . . . . . . 11 . 121National Electrical Safety Code . . . . . . 11 . 122Overhead Distribution Areas . . . . . . 11 . 123Point of Delivery . . . . . . . 11 . 124Rate Schedule Classification . . . . . . 11 . 125Retail Electric Provider (REP) . . . . . . 11 . 126Service Cable Tap Box . . . . . . . 11 . 127Service Drop . . . . . . . . 11 . 128Service Entrance Conductor . . . . . . 12 . 129Service Lateral . . . . . . . . 12 . 130Service Location . . . . . . . . 12 . 131Service Outlet . . . . . . . . 12 . 132Service Outlet Location and Data Statement . . . . . 12 . 133Transmission and/or Distribution Service Provider (TDSP) . . . 12 . 134Type of Service . . . . . . . . 12 . 135Underground Distribution Areas . . . . . . 12 . 136Underground Street Network Areas . . . . . 12 . 137Underground Radial Areas . . . . . . 13 . 138Underground Residential Distribution Areas . . . . 13 . 1396
Section 200 – General InformationApplication for Service . . . . . . . 14 . 201Agreement for Service . . . . . . . 15 . 202Service Outlet Location and Data Statement . . . . . 15 . 203Change in Customer's Wiring Installation . . . . . 15 . 204Change in Location of Existing Service Facilities. . . . 15 . 205Attachments to Company's Property . . . . . 15 . 206Customer Wiring . . . . . . . 16 . 207Grounding . . . . . . . . 16 . 208Utilization Voltage . . . . . . . 17 . 209Energizing of Customer's Service. . . . . . 17 . 210Responsibility for Customer's Installation . . . . . 17 . 211Motor Protection Devices . . . . . . . 17 . 212Customer Communication or Tone Systems . . . . . 18 . 213Antennas (Radio, Television, Communication, etc.) . . . . 18 . 214Customer-Owned Generation Equipment . . . . . 18 . 215Electrified Fences . . . . . . . 19 . 216Section 300 - Types of ServiceSingle-Phase . . . . . . . . 20 . 301208/120 volt, 3-wire . . . . . . . 20 . 301240/120 volt, 3-wire . . . . . . . 20 . 301480 volt, 3-wire . . . . . . . . 20 . 3017,200 or 19,920 volt, 2-wire . . . . . . 20 . 301Two-Phase . . . . . . . . 20 . 30212,470/7,200 volt, 3-wire . . . . . . . 20 . 30234,500/19,920 volt, 3-wire . . . . . . 20 . 302Three-Phase . . . . . . . . 20 . 303208Y/120 volt network, 4-wire . . . . . . 20 . 303208Y/120 Volt, 4-wire. . . . . . . 20 . 303240/120 volt, 4-wire, delta . . . . . . 20 . 303480 volt, 3-wire . . . . . . . . 20 . 303480Y/277 volt, 4-wire . . . . . . . 20 . 3032,400 volt, 3-wire, delta . . . . . . . 20 . 3034,160Y/2,400 volt, 4-wire . . . . . . 20 . 30312,470Y/7,200 volt, 4-wire . . . . . . 20 . 30334,500Y/19,920 volt, 4 wire . . . . . . 20 . 303SECTION 400 - RESIDENTIAL AND SMALL COMERCIALSELF-CONTAINED METER SERVICE INSTALLATIONSGeneral Information . . . . . . . 21 . 400Services . . . . . . . . 21 . 401Overhead Service . . . . . . . 21 . 402Service Drop . . . . . . . . 22 . 402Clearance for Service Drop . . . . . . 24 . 403Location of Service Outlet . . . . . . 28 . 404Grouping Service Outlets . . . . . . . 29 . 405Point of Attachment . . . . . . . 31 . 406Anchorage for Service Drop . . . . . . 32 . 407Service Entrance Conductors. . . . . . 33 . 408Transformer Installations on Customer's Premises . . . . 34 . 409Temporary Installations . . . . . . . 34 . 410Underground Service . . . . . . . 34 . 4117
Commercial Underground . . . . . . 34 . 411Mobile Home Parks . . . . . . . 34 . 412Underground Service Laterals in Overhead Areas . . . . 35 . 413Underground Service in Underground Residential Areas . . . 39 . 414Customer Installed Underground Conductors . . . . 39 . 415Service to Apartments, Townhomes or Condominiums . . . 43 . 416Meter Loops . . . . . . . . 46 . 417Meter Installations . . . . . . . 47 . 418Methods of Installing Meter Mounting Devices . . . . 52 . 419Height of Meters . . . . . . . . 57 . 420Meter Location . . . . . . . . 58 . 421Meter Pole Installations . . . . . . . 59 . 422Meter Installation Sequence . . . . . . 60 . 423SECTION 500 - LARGE COMMERCIAL INSTRUMENTTRANSFORMER RATED METER SERVICE INSTALLATIONSGeneral Information . . . . . . . 63 . 500Services . . . . . . . . 65 . 501Overhead Service . . . . . . . 65 . 502Service Drop . . . . . . . . 67 . 502Clearance for Service Drop . . . . . . 68 . 503Location of Service Outlets . . . . . . 69 . 504Grouping Service Outlets . . . . . . . 69 . 505Point of Attachment . . . . . . . 70 . 506Anchorage for Service Drop . . . . . . 70 . 507Service Entrance Conductors. . . . . . 72 . 508Transformer Installation on Customer's Premises . . . . 72 . 509Temporary Installations . . . . . . . 72 . 510Underground Service . . . . . . . 73 . 511Commercial Underground . . . . . . 73 . 511Underground Service Laterals in Overhead Areas . . . . 73 . 512Meter Installations . . . . . . . 77 . 513Methods of Installing Meter Equipment . . . . . 87 . 514Meter Location . . . . . . . . 88 . 515Meter Seals . . . . . . . . 88 . 516Meter Installation Sequence . . . . . . 89 . 517Service Center Boundaries . . . . . . 90-101Lone Star Notification Center . 1028
SERVICE STANDARDSCENTERPOINT ENERGYSECTION 100-DEFINITIONS100The following is a list of terms and definitions used in this manual.101AMS Meter: Advanced Metering System or Smart Meter used for bothresidential and commercial services to measure the electric power andenergy supplied to a customer.102Application for Service: The agreement or contract between the Company andthe Customer under which Electric Service is supplied and taken.103Company: CenterPoint Energy104Connected Load: The combined manufacturer's rated capacity of all motors andother electric powered devices on the Customer's premises, which may, at the willof the Customer, be operated.105Customer: Any individual, partnership, association, firm, public or privatecorporation, or governmental agency now being served or hereafter to be served,using the Electric Service of the Company at any specified location.106Customer Extension: Any addition to the Company's existing distributionfacilities required to render Electric Service to a Customer.107Customer's Installation: All wiring, appliances, or apparatus of any kind ownedor operated by the Customer on the Customer's side of the Point of Delivery usedin connection with the Customer's ability to take and use the Electric Service ofthe Company.108Customer's Service Equipment: The necessary equipment and accessories,located near the point of entrance of supply conductors to a building, whichconstitute the main control and means of disconnecting the supply to thatbuilding. This equipment usually consists of a circuit breaker or a switch andfuses.109Distribution Lines: The Company's lines located along streets, alleys, highways,or easements on private property when used or intended for use for generaldistribution of Electric Service to Customers of the Company.9
110Electric Service: The availability of electric power and energy, regardless ofwhether any electric power and energy is actually used. The supplying of ElectricService by the Company consists of maintaining the approximate voltage, phase,and frequency agreed upon, at the Point of Delivery by means of facilitiesadequate for carrying the load which the Company is thereby obligated to supplyby reason of the known requirements.111Harmonics: Integer multiples of the fundamental power system frequency (sixtycycles per second), which have a negative effect on the power system. Harmonicsare generated by the non-continuous manner in which electronically controlled(non-linear) equipment draws current. See Article 500.1 and 500.2.112Manufactured Home: Built on a non-removable chassis (Federal ConstructionSafety Standards Act (HUD/CODE) requirement) and designed to be used as adwelling, with or without a permanent foundation, when connected to requiredutilities. Mobile Homes are defined as manufactured homes in HUD regulationsand the NEC Code also includes mobile homes in their definition of manufacturedhomes.113Meter: An instrument, or instruments, together with auxiliary equipment, formeasuring the electric power and energy supplied to a Customer.114Meter Mounting Devices: The devices owned and furnished by the Customer formounting and/or enclosing the Company's self-contained Metering Equipment.115Meter Box: A metal box furnished by the Company and installed by theCustomer at the Customer’s expense to house transformer rated meters.116Metering Current Transformer Box: A metal box furnished by the Companyand installed by the Customer at the Customer's expense, for enclosing theCompany's metering current transformers where required.117Metering Potential Transformer Box: A metal box furnished by the Companyand installed by the Customer at the Customer's expense, for enclosing theCompany's metering potential transformers where required.118Meter Loop: The opening in and extension of the Customer's Service EntranceConductors provided for installation of the Company's Meter.119Mobile Home: A factory assembled structure or structures transportable in one ormore sections that is built on a permanent chassis (integrated frame and axles) anddesigned to be used as a dwelling without a permanent foundation whereconnected to the required utilities. The metal frame that the house is hauled on isalso the structural floor support of the home and stays as part of the home afterinstallation. The term Mobile Home includes manufactured homes. The10
requirements in the NEC treat mobile and manufactured homes the same unlessspecifically stated otherwise.120Modular Home: Designed, engineered and built in a factory controlledenvironment and then carried in sections by special trucks to a building site wherethey are put together by a builder on a permanent foundation, similar to regularhome construction. Unlike mobile homes, modular homes do not have integratedframes and axles. For the purposes of these Service Standards, CenterPointEnergy will treat Modular Homes and Developer/Contractor Built Homes thesame.121National Electrical Code: The current edition of the National Electrical Code(ANSI/NFPA-70) as published by the National Fire Protection Association.122National Electrical Safety Code: The current edition of the National ElectricalSafety Code (ANSI C2) as issued by the Secretariat (IEEE) of the ANSI C2Committee.123Overhead Distribution Areas: The area or areas served by the Company'soverhead distribution system as differentiated from the underground system.124Point of Delivery: The point where the electric energy first leaves the line orapparatus owned by the Company and enters the line or apparatus owned by theCustomer, unless otherwise specified in the Customer's Agreement for Service.This is not necessarily the point of location of the Company's Meter.125Rate Schedule Classification: The classification of the Customer's ElectricService, the amount of electric power supplied, the rate area and the purpose forwhich the Electric Service is to be used.126Retail Electric Provider (REP): A person (or company) that sells electric energyto retail Customers in this state (Texas). As provided in PURA ¶ 31.002(17), aRetail Electric Provider may not own or operate generation assets. As provided inPURA ¶ 39.353(b), a Retail Electric Provider is not an Aggregator.127Service Cable Tap Box: An enclosure designed with busbars for the purpose ofterminating service entrance conductors from the electric utility point of supplyand for terminating service conductors to individual tenant services.128Service Drop: The Overhead Service conductors extending from the Company'sOverhead Distribution System to the Customer's Service Entrance Conductors atthe Point of Delivery.11
129Service Entrance Conductors: The wires or bus bars provided by the Customerextending from the Customer's Service Equipment to the terminals of the ServiceDrop or Service Lateral.130Service Lateral: The Underground Service conductors between the street and/oreasement, including any risers at a pole or from transformers, and the first point ofconnection to the Service Entrance Conductors in a terminal box or Meter.(Underground Service conductors are owned and maintained by the Customer.)131Service Location: Conductors on the utility side of the service point are notcovered by the NEC. CenterPoint Energy (CNP) specifies the location of theservice point. Service entran
110 Electric Service: The availability of electric power and energy, regardless of whether any electric power and energy is actually used. The supplying of Electric Service by the Company consists of maintaining the approximate voltage, phase, and frequency agreed upon, at the Point of Delivery by means of facilities
