HANDBOOK REQUIREMENTS - Central Maine Power Company

301. DIRECT CURRENT OR TWO-PHASE SERVICE
No new service installation or provisions for increased
loads will be made for either direct current or two-phase
alternating current services.
302. VOLTAGE VARIATION
The Company will maintain the voltage delivered to its
customers within the limits prescribed in "A" and "B" below, as
required in the MPUC’s Chapter 320. This voltage will be
maintained to the customer’s service entrance panel, provided that
all systems up to that point meet CMP Standards. For three phase
services, this "maintained" voltage can
only be assured when all
three primary phases are utilized and all three transformer
windings are connected. Therefore, three primary phases will be
required for the three phase services listed in paragraph 300. For
residential services, refer to the Table on Illustration No. 31 in
Section XII for “Allowable Secondary and Service Length.”
A. For service rendered principally for residential or
commercial purposes the normal voltage variation shall not
exceed plus or minus five percent (+ or - 5%) from the
standard voltage for any period longer than one (1) minute.
B. For service rendered principally for power purposes the
normal voltage variation shall not exceed plus or minus ten
percent (+ or - 10%) from the standard voltage for any
period longer than one (1) minute.
303. SPECIAL INSTALLATIONS
The customer will be required to pay the cost of any special
installation necessary for service at other than the standard
voltages listed previously or for service with closer voltage
regulation than required for standard practice.
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