Transcription
Specifications forElectricalInstallations2012
Our assistance is just a phone call away.Help is as close as your phone. Call our local Liberty Utilities office for useful information and assistance wheneveryou have questions on information in this booklet.While you’re planning electrical and mechanical systems for your next project, our representatives will work closelywith you and your clients.We’ll provide detailed analysis or supplemental data on all types of electrical installations.We’ll give you valuable aid before final plans are made on heating, cooling, wiring and lighting. And most important,we will suggest ways to conserve energy.A call to Liberty Utilities will help you help yourself. Call today.Available 24 hours a day, every dayCustomer Service CenterFaxMail Address1-800-375-7413Mon-Fri 7:00 a.m. – 5:00 p.m.1-603-896-6175Liberty UtilitiesCustomer Service Center11 Northeastern Blvd.Salem, NH 03079Non-English Speaking CustomersPara clients que hablan Esplanol1-800-375-7413Hearing/Speech-Impaired CustomersEmergency Numbers – does not replace 911 emergency medical services711Life-Threatening Electric Emergency1-800-465-1212Life-Threatening Gas Emergency1-800-833-4200Power OutagesNew Construction & Service UpgradesTo initiate a request for new or upgraded electric service1-800-465-1212By Phone1-800-375-7405Mon-Fri 8:00 a.m. – 4:30 p.m.By Fax1-603-896-6175Online by Internetwww.libertyutilties.comThen select the appropriate state.Go to the section “For Technical and ConstructionProfessionals” under “For Business Partners”For assistance with pending electric service requests, contact CustomerOrder Fulfillment1-800-375-7405For electric inspectors, to release a municipal wiring inspection1-800-375-7405Mon-Fri 8:00 a.m. – 4:30 p.m.NHSalesMarketing@libertyutilities.comNew Residential or Commercial Developments – to email AutoCAD orMicroStation drawingsDig Safe Requests1-888-DIGSAFE (1-888-344-7233)Dig Safe System Inc.811 is the national wide number; d Identification HotlineWhen working near power lines or high voltage lines1-888-625-3723Also check the following Web site for this and other Liberty Utilities information: http://www.libertyutilities.com
Specification for Electrical InstallationsPage 1 of 110July 2012July 2012SPECIFICATIONS for ELECTRICAL INSTALLATIONSPREFACEThis July 2012 edition of the Specifications for Electrical Installations is effective as of July 2012.These specifications provide practical answers to common questions about our Companies’ electricalservices but cannot take the place of person to person assistance. We encourage you to call us at anytime for advice and further information. Our local telephone numbers are listed inside the cover of thisbooklet.These specifications, which protect the mutual interests of the Customer and Company, may be revisedor amended from time to time in keeping with developments and progress of the industry. For the latestofficial version of this document please visit the Company’s web site address. Printed copies of thesespecifications are not document controlled and may be obtained from the Company by contacting theapplicable Customer Service Centers in Lebanon and Salem, New Hampshire. Therefore, the on-lineversion will always prevail over any uncontrolled printed documents.Our Customer Care departments offer several programs that can be profitable for you and your client,and that promote the efficient use of electricity. Call us for details we look forward to working with you toprovide the best electric service possible. To make this possible, we ask that you submit suggestionson revisions to this document by completing the form located at the end of this booklet and mailing it tothe address shown on the form.Thank you.FOR THE LATEST AUTHORIZED VERSION PLEASE REFER TO THE COMPANY’S WEBSITE AT ations.Specifications for Electrical Installations 2012 ESB # 750 - July 2012
Specification for Electrical InstallationsPage 2 of 110July 2012TABLE OF CONTENTSSECTIONPAGEPREFACE . 1TABLE OF CONTENTS . 2PROCESS AND INFORMATION . 9Obtaining Electric Service . 9Liberty Utilities in New Hampshire: . 11Safety Information . 12Contacting the Company . 12PART A – “GENERAL INFORMATION” . 131.0INTRODUCTION . 131.1PURPOSE . 131.2SCOPE . 131.3RATE SCHEDULE . 131.4COOPERATION AND TIME REQUIREMENTS . 131.5CODES, STANDARDS, AND REFERENCES . 13FIGURE 1.5-1 – ILLUSTRATION UTILITY ELECTRIC SUPPLY AND PREMISES WIRING . 141.5.1References . 151.5.2Supplemental Company Specifications . 151.6REQUESTS FOR INFORMATION . 151.7CUSTOMER’S RESPONSIBILITY . 151.7.1All Customers . 151.7.2Customers served at voltages above 600 volts . 161.8COMPANY’S RESPONSIBILITIES . 161.9INSPECTION, WIRING ADEQUACY, AND ENFORCEMENT . 161.10DISCLAIMER. 171.10.1Company Approval. 171.10.2Use of Electricity . 171.10.3Condition of Service . 171.10.4Company Warranty Statement . 171.11ENFORCEMENT OF COMPANY REQUIREMENTS . 181.11.1Enforcement Criteria . 181.11.2Diversion of Electrical Energy . 182.0DEFINITIONS . 19Figure 2-1: Typical Service Installation Diagram Below 600 volts – Excluding Network . 193.0GENERAL SERVICE CONNECTION REQUIREMENTS . 23.3.33.3.4APPLICATION FOR SERVICE . 24Application . 24Public grants and special permits . 24Easements. 24NUMBER OF SERVICES. 24With Respect to Building and Premise . 24Electricity Delivered Through More Than One Meter . 24Multiple Service Requests . 25TEMPORARY SERVICE . 25Company Facilities . 25Location . 25Equipment . 25Duration . 26FOR THE LATEST AUTHORIZED VERSION PLEASE REFER TO THE COMPANY’S WEBSITE AT ations.Specifications for Electrical Installations 2012 ESB # 750 - July 2012
Specification for Electrical InstallationsPage 3 of 110July 2012TABLE OF CONTENTSSECTION3.3.53.43.53.63.73.7.1PAGECost . 26ACCESS. 26IDENTIFICATION OF EMPLOYEES . 26CHARACTER OF SERVICE . 26VOLTAGES AVAILABLE . 27Available Services . 27Table 3.7.1-1 - Available Services Below 600 volts . 2New Customers (Applicants) . 27Existing Customers. 28Customer Expansion . 28Voltage Migration at Customer’s Request . 28Voltage Migration at Company’s Request . 28SERVICES NO LONGER STANDARD . 28LOAD BALANCE . 28INCREASE IN SERVICE . 28UNAUTHORIZED ATTACHMENTS . 29DISCONTINUANCE OF SERVICE . 29PART B – “ELECTRIC SERVICE REQUIREMENTS” . 304.0SERVICE CONNECTIONS . GENERAL . 30Rights-of-Way, Easements . 30Number, Routing and Location of Service Laterals or Service Lines . 30Relocation of Service Laterals . 31Allowable Voltage Drop . 31Minimum Size-Single Phase Service Connections . 31Service Conductor Splicing . 31Routing of Metered and Unmetered Conductors . 31Inhibiting Grease . 32Electric and Gas Meter Clearances . 32Figure 4.1.9-1 Electric Meter to Gas Meter Clearances . 324.1.10Temporary Service . 32Figure 4.1.10-1 Typical Overhead Service Pole for Permanent or Temporary Service Below 600V . 33Figure 4.1.10-2 Temporary Overhead Service Below 600 volts . 34Figure 4.1.10-3 Temporary Underground Service Below 600 volts . 354.1.11Fire Alarm and Emergency Systems . 354.1.11.1 Fire Alarms . 354.1.11.2 Emergency Systems . 354.1.12Service to Manufactured and Mobile Homes, Mobile Home Parks, and Recreational Vehicle Parks . 364.1.12.1 Service to Manufactured and Mobile Homes and Mobile Home Parks . 364.1.12.2 Service to Recreational Vehicle Parks . 374.2OVERHEAD SECONDARY VOLTAGE SERVICE CONNECTION (UNDER 600V) . 374.2.1 General . 37Figure 4.2.1-1 Typical Overhead Service Installation under 600V . 374.2.2 Service Attachment, Location . 38Figure 4.2.2-1 Typical Residential Overhead Service under 300 volts and 400 amperes . 384.2.3 Customer-owned Service Pole. 394.2.4 Overhead Service Line Clearances . 394.2.4.1 General Overhead Service Line Clearances . 394.2.4.2 Clearances to Swimming Pools . 404.2.4.3 Service to Low Buildings . 40Table 4.2.4.3-1 - Galvanized Riser Mast Bracing Requirements . 41Figure 4.2.4.3-1 Overhead Service Attachment and Riser Mast Requirements . 424.2.5Service Drop and Connection to Service Conductors . 43FOR THE LATEST AUTHORIZED VERSION PLEASE REFER TO THE COMPANY’S WEBSITE AT ations.Specifications for Electrical Installations 2012 ESB # 750 - July 2012
Specification for Electrical InstallationsPage 4 of 110July 2012TABLE OF CONTENTSSECTIONPAGE4.2.6Residential Overhead Service Upgrade . 434.3OVERHEAD PRIMARY VOLTAGE SERVICE CONNECTION (2.4KV TO 15KV INCLUSIVE) . 434.4UNDERGROUND SECONDARY SERVICE VOLTAGE CONNECTION (UNDER 600V) . 434.4.1General. 43Figure 4.4.1-1 Typical Underground Service Installation under 600V (Excluding Network Services) . 444.4.2Facilities in Shared Trench . 444.4.3Conduit System . 444.4.4Underground Secondary Service Connection from the Company’s Overhead Distribution Supply . 454.4.4.1 Customer-owned Underground Secondary Service Conductors . 454.4.4.2 Company Riser Pole Attachments . 45Figure 4.4.4.2-1 Underground Secondary Service Riser Pole Detail . 464.4.5Underground Secondary Service Connection from the Company’s Underground Supply Lines . 464.4.5.1 General . 464.4.5.2 Radial fed underground secondary services . 474.4.6 Underground Residential Distribution (URD) Areas . 47Figure 4.4.6-1 Underground Residential Distribution (URD) . 48Figure 4.4.6-2 Underground Secondary Service Residential Meter Connection – Conduit or Direct Buried . 504.4.7Underground Secondary Service Connection . 504.4.7.1 From a Company-owned Primary Underground Service Lateral . 504.4.7.2 Service to Multiple Occupancy Buildings . 50Figure 4.4.7.3-1 Typical Service to Multiple Occupancy Building. 514.5UNDERGROUND PRIMARY VOLTAGE SERVICE CONNECTION (FROM 2.4KV TO 15KV INCLUSIVE) . 515.0SERVICE EQUIPMENT . NERAL . 52Service Equipment Required . 52Service Equipment Minimum Continuous Current Rating . 52Service Equipment Minimum Short Circuit Withstand Capability . 52Routing of Metered and Unmetered Conductors . 52Taps Ahead of Main Service Equipment . 52When Service Equipment Ahead of Metering is Required . 52Service Equipment on Service Poles, Pedestals, or Posts . 53Grouped Metered Services to Separate Buildings on One Premise . 53Service Equipment Arrangement . 53Service Equipment Minimum Attributes . 54Interrupting Rating. 54Inductive Heating. 54Metering Transformer Space . 54Bonding . 54Spare Fuses . 54Circuit Breaker. 54Instrumentation and Control Wiring . 54RESIDENTIAL . 54NETWORK SERVICE . 54General. 54RADIAL SERVICES . 55More than Six Service Disconnects . 55Radial Service, 300 amperes Continuous or Less Served at Less Than 600 volts . 55Radial Service, Above 300 amperes Continuous Served at Less Than 600 volts . 55INDIVIDUAL MULTIPLE OCCUPANCY BUILDING SERVICE . 55RADIAL LOADS SERVED ABOVE 600 VOLTS . 56GROUNDING . 576.1GENERAL . 57FOR THE LATEST AUTHORIZED VERSION PLEASE REFER TO THE COMPANY’S WEBSITE AT ations.Specifications for Electrical Installations 2012 ESB # 750 - July 2012
Specification for Electrical InstallationsPage 5 of 110July 2012TABLE OF CONTENTSSECTION6.26.36.46.5PAGEEQUIPMENT TO BE GROUNDED. 57GROUNDING METHODS . 57GROUNDING RESTRICTIONS . 57GROUND FAULT PROTECTION . 577.0METERING . 587.17.1.17.1.37.1.3.17.1.3.2GENERAL . 58Access . 58Working Clearances . 58Indoor Installations . 58Outdoor Installations . 58
New Residential or Commercial Developments – to email AutoCAD or MicroStation drawings NHSalesMarketing@libertyutilities.com Dig Safe Requests 1-888-DIGSAFE (1-888-344-7233) Dig Safe System Inc. . Specifications for Electrical
