§ 29-57. Raceways.

(a)

All underground conductors supplying current for street lighting systems shall be installed in a nonmetallic flexible polyethylene coilable plastic duct and conductor type assembly prefabricated with conductors at the factory in one (1) continuous length or equivalent thick walled watertight raceway; except where run under paved or other completed streets the duct shall be run in a metallic raceway and the raceway shall be coated and wrapped with a protective coating. The coating shall be of a type normally used for protection purposes, and shall be applied in accordance with the manufacturer's specifications.

(b)

Where run under undeveloped or newly cut streets (not yet paved, blacktopped or graveled) they may be run in a nonmetallic raceway encased in four (4) inches of concrete, otherwise they shall be installed in a metallic raceway and be protected as described above.

(c)

All raceways shall have a minimum trade size of two (2) inches and be buried a minimum of twenty-four (24) inches below grade. Where the raceways rise up to the light standard, they shall be encased in a minimum of four (4) inches of concrete. All elbows or bends used in the system shall be galvanized pipe encased in a minimum of four (4) inches of concrete. Where the raceways enter the base of the light standard, they shall extend a minimum of four (4) inches above the concrete base supporting the standard, be provided with insulated bushings to prevent abrasion to the conductors and the ends of each raceway shall be sealed with a standard sealing compound.

(d)

They shall be provided a standard weatherproof junction box at or mounted on the utility company's pole from which the underground feeders receive their current supply and the underground raceway shall be continuous from the junction box to the base of each light standard.

(Code 1961, § 15-20)