HANDBOOK REQUIREMENTS - Central Maine Power Company

503. ATTACHMENT METHODS
Service entrance cable or conduit shall be securely fastened
to the building with suitable rustproof
clips and fasteners.
Expansion shields or their equivalent shall be used in brick,
concrete or other masonry construction. Cable entrances into
buildings shall be not less than six inches above final grade,
adequately protected if exposed to physical damage, and
weatherproofed at the point of building entrance.
All conduit fittings, on the line side of the meter, which
contain service entrance conductors shall be placed so as to be
fully exposed to view. Fittings shall be made watertight unless
installed at the bottom of a vertical run, in which case they shall
be raintight and designed to drain. They shall be placed not less
than six inches above final grade.
504. SERVICE ENTRANCE CONDUIT
Aluminum conduit shall not be used under the following
conditions:
A. When bare copper conductors are used.
B. For mast type construction.
C. In contact with the earth.
Rigid non-metallic sunlight resistant conduit recognized
for use above ground may be used as permitted
by NEC Article
352,
with the following added restrictions:
A. It shall not be used in mast type services. (See
Paragraph 505, below.)
B. Only schedule 80 may be used at locations which are
subject to physical damage (per the NEC).
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