HANDBOOK REQUIREMENTS - Central Maine Power Company

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91 91 3. The Company further reserves the right to limit the size of the largest motor which may be operated on any part of its system. B. Single-Phase Motors 1. In general, single-phase motors up to 1 hp. may be operated on 120 volts. In certain cases, however, it may be necessary to operate these motors on 240 volts to obtain satisfactory results. All motors over 1/2 hp. should be operated on the higher voltage wherever feasible. Motors which are rated for 230 volts may not operate satisfactorily on 208 volts. 2. Motors are available in different types, designed for various kinds of loads and operating conditions. The manufacturer's recommendations should always be followed in determining the type of motor to be installed. In all cases, the requirements of paragraph 1100 above, regarding fluctuations and disturbances in the Company's supply system must be met. C. Polyphase Motors 1. Standard "squirrel-cage" motors rated at 10 hp. and less may be started at full line voltage. For larger motors, the Company reserves the right to require the customer to limit the motor starting current by the use of reduced voltage starters or other acceptable means. 1102. PROTECTION AND CONTROL SPECIFICATIONS A. The customer shall be responsible for protection against low voltage or phase loss wherever low voltage, phase loss, or unexpected restarting could cause damage to the customer's equipment or result in personal injury.
92 B. Overload protective devices shall be installed for all motors in accordance with the provisions of the NEC Section 430-III. C. Control apparatus equipped with reverse-phase relays of approved type shall be installed by the customer on all polyphase motor installations for elevators, hoists, cranes and those manufacturing processes where accidental reversal of rotation is liable to cause injury to persons or damage to machinery, equipment or work in process. D. It is recommended that customers protect their electrical equipment from voltage transients caused by such events as lightning and internal and external switching. For more information about protecting electrical and electronic equipment, see the Company's on-line publication at http://www.cmpco.com/handbook then click on CMP’s Power Quality link. 1103. POWER FACTOR CORRECTION The use of equipment by the customer for power factor correction must conform to requirements of the Company as to electrical characteristics of equipment and its operation and control. The customer may be required to limit the size of static capacitor installations or to maintain effective control of the capacitors or other corrective equipment in order to prevent the use of such equipment from causing excessive voltage at the service. Corrective equipment installed by the customer must be located on the load side of the service disconnecting device and metering. 92
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HANDBOOK OF REQUIREMENTS FOR ELECTR
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To contact us for information or as
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CENTRAL MAINE POWER TOWNS SERVED TO
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TABLE OF CONTENTS I. INTRODUCTION 1
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501. Conductor Identification 502.
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XI. UTILIZATION EQUIPMENT SPECIFICA
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25. [364-9 & 364-10] Large 9’ x 9
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2 102. REVISIONS OF REQUIREMENTS Th
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4 II. General Requirements 200. APP
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6 Dwelling Application is used when
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8 be any duty or obligation on the
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10 214. CUSTOMER'S RESPONSIBILITY 1
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12 be provided with suitable automa
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14 219. CUSTOMER CONSTRUCTED/OWNED
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16 16 • Provide the Company a pla
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18 III. STANDARD CHARACTERISTICS 30
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20 20 service (whenever possible) f
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22 22 304. TRANSFORMER VAULTS AND M
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24 recommended to provide adequate
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26 Refer to paragraph 219 for the r
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28 Company requirements. Following
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30 conductor to the neutral. Meteri
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32 ith outlets used as mobile home
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34 34 protection shall be installed
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36 36 conductors must extend at lea
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38 505. SERVICE MAST CONSTRUCTION U
Page 55 and 56: 40 40 of sufficient size to readily
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: 90 XI. UTILIZATION EQUIPMENT SPECIF
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HANDBOOK REQUIREMENTS - Central Maine Power Company

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