Services & Service Entrance Equipment

• Only one service drop, either overhead or underground, will be supplied to a building or other structure without approval by the CDE Manager of Engineering and the inspection authority.

• Any occupancy requiring service of 600 amperes or less, not exceeding 500 volts, single or three phase, overhead or underground, shall use "self-contained" metering. Express permission to have current transformer metering shall be granted only by the CDE Vice President of Metering Services.

• Risers that extend through or above the roof, in addition to complying to applicable codes, shall be a minimum of two inch rigid or IMC steel and shall extend not less than two feet above the roof. Risers that extend through or above the roof shall be guyed or braced to withstand any strain imposed by service drop conductors. Risers that extend through or above roofs ten feet or less shall be continuous and without couplings or similar fittings. All materials used to guy or brace risers shall be suitable for the environment in which they are to be installed. Guy wire shall be attached by an eye bolt passing through and securely fastened to the roof framing. Eye screws shall not be considered adequate for use in attaching guy wire. Minimum guy shall be 3/16 inch steel wire. Guy wire or braces must be connected to the riser below the weatherhead.

• For risers which do not extend through or above the roof, the customer or builder shall install an attachment point suitable to withstand any strain imposed by the service drop conductors. Eye screws or similar devices shall not be considered adequate as an attachment point form service drop conductors.

• The riser(s) or attachment point(s) shall be installed at a height and location as to accommodate all minimum clearances for the service drop conductors, according to the latest revisions of the National Electrical Safety Code, the National Electrical Code, the State of Tennessee Electrical Code, and the Clarksville Department of Electricity requirements. It shall be the responsibility of the builder or electrical contractor to consult with the CDE Engineering Department to insure proper location, height, and orientation of risers, attachment points, conductors, weatherhead, and guys or braces. Proper conductor length, three feet minimum, for service hookup shall be determined at that time.