HANDBOOK REQUIREMENTS - Central Maine Power Company

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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.