HANDBOOK REQUIREMENTS - Central Maine Power Company

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VI. SERVICE (ENTRANCE) EQUIPMENT 600. DISCONNECTING MEANS A suitable service disconnecting means must be provided for each customer's source of supply. In multiple occupancy buildings a main service disconnecting means, where required by the NEC or as specified by local ordinances, shall also be installed so as to completely disconnect all of the interior wiring at one point. In accordance with NEC Section 230.71, there shall be not more than six disconnects (without a main), per service, grouped in any one location. Each service disconnect shall be permanently marked to identify it as a service disconnect. The disconnecting means must be located in a readily accessible place either outside of a building or structure or inside nearest the point of entrance of the service conductors (per NEC Section 230.70). The disconnecting means shall plainly indicate whether it is in the open (OFF) or closed (ON) position per NEC Section 230.77. Where a circuit breaker is utilized and the handle is operated vertically, the "up" position shall be the "on" position (per NEC Section 240.81). The service equipment for permanent services shall be of a type and size as required by NEC Article 230 and shall be marked " suitable for use as service equipment" per NEC Section 230.66. The Company reserves the right to seal any service disconnecting means as a general safety measure and as a protection against tampering by unauthorized persons. The Company will not be responsible for sizing service equipment. Mounting provisions for service disconnecting means and associated equipment shall be furnished and installed by the custom er. They shall solidly support the equipment and provide anchorage for cables and conduits attached to the service equipment. Where located in basements, an air space shall be provided at the back when next to an outside wall. They shall be 39 39
40 40 of sufficient size to readily accommodate the equipment to be mounted upon them. All layouts in multiple occupancy buildings shall be subject to approval by the Company. 601. SEQUENCE OF DISCONNECTING MEANS AND METER EQUIPMENT The location of the service disconnecting means shall be on the load side of the metering equipment (meter-switch-fuse sequenc e, i.e., metered “hot sequence”). Exception #1: On the Portland downtown network and other similar urban underground systems, the sequence shall be switch-fuse-meter. Exception #2: In multiple meter locations where the NEC requires a main disconnect, the sequences shall be main disconnect-meter-switch-fuse. Exception #3: The Company may allow a switch-fuse- meter sequence in switchgear. Prior Company approval is required. When N.F.P.A regulations require fire alarm systems to be tapped onto the line side of the main disconnect, then the metering shall be on the line side of all disconnecting means (meter-fire alarm- switch-fuse sequence). The contractor shall be required to furnish and install multiple conductor terminal lugs of the correct size when necessary. 602. METERED AND UNMETERED WIRES All unmetered wires, except those used as service entrance conductors in cable, shall be run in steel or aluminum conduit,
Page 1:
HANDBOOK OF REQUIREMENTS FOR ELECTR
Page 4 and 5: To contact us for information or as
Page 6 and 7: CENTRAL MAINE POWER TOWNS SERVED TO
Page 8 and 9: TABLE OF CONTENTS I. INTRODUCTION 1
Page 10 and 11: 501. Conductor Identification 502.
Page 12 and 13: XI. UTILIZATION EQUIPMENT SPECIFICA
Page 14: 25. [364-9 & 364-10] Large 9’ x 9
Page 17 and 18: 2 102. REVISIONS OF REQUIREMENTS Th
Page 19 and 20: 4 II. General Requirements 200. APP
Page 21 and 22: 6 Dwelling Application is used when
Page 23 and 24: 8 be any duty or obligation on the
Page 25 and 26: 10 214. CUSTOMER'S RESPONSIBILITY 1
Page 27 and 28: 12 be provided with suitable automa
Page 29 and 30: 14 219. CUSTOMER CONSTRUCTED/OWNED
Page 31 and 32: 16 16 • Provide the Company a pla
Page 33 and 34: 18 III. STANDARD CHARACTERISTICS 30
Page 35 and 36: 20 20 service (whenever possible) f
Page 37 and 38: 22 22 304. TRANSFORMER VAULTS AND M
Page 39 and 40: 24 recommended to provide adequate
Page 41 and 42: 26 Refer to paragraph 219 for the r
Page 43 and 44: 28 Company requirements. Following
Page 45 and 46: 30 conductor to the neutral. Meteri
Page 47 and 48: 32 ith outlets used as mobile home
Page 49 and 50: 34 34 protection shall be installed
Page 51 and 52: 36 36 conductors must extend at lea
Page 53: 38 505. SERVICE MAST CONSTRUCTION U
Page 57 and 58: 42 42 double-throw switch or other
Page 59 and 60: 44 VII. GROUNDING AND BONDING 700.
Page 61 and 62: 46 2. Metal frame of building or st
Page 63 and 64: 48 electrode/conductor or metallic
Page 65 and 66: 50 building or structure grounding
Page 67 and 68: 52 test switches and control cable
Page 69 and 70: 54 54 804. POLE MOUNTED METERS Pole
Page 71 and 72: 56 56 identify the area served by e
Page 73 and 74: 58 58 “connected to the grounded
Page 75 and 76: 60 by-pass requirements and the res
Page 77 and 78: 62 Meter mounting devices shall be
Page 79 and 80: 64 64 not to interfere with the ope
Page 81 and 82: 66 66 The mounting of Company meter
Page 83 and 84: 68 68 901. CUSTOMER RESPONSIBILITY
Page 85 and 86: 70 acceptable to mount the riser(s)
Page 87 and 88: 72 72 The Company will make all con
Page 89 and 90: 74 other distribution system exists
Page 91 and 92: 76 76 In cases not meeting the prec
Page 93 and 94: 78 78 Primary service requiring hig
Page 95 and 96: 80 80 Section 321 B. During back-fi
Page 97 and 98: 82 82 Customers electing to install
Page 99 and 100: 84 84 determined (in consultation w
Page 101 and 102: 86 service only if it is built to C
Page 103 and 104: 88 X. SERVICE FROM UNDERGROUND MAIN
Page 105 and 106:
90 XI. UTILIZATION EQUIPMENT SPECIF
Page 107 and 108:
92 B. Overload protective devices s
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