N.Y.C. Admin. Code § 770.47: Section 770.47

Section 770.47– Revise Section 770.47 to read as follows:

770.47 Underground Optical Fiber Cables Entering Buildings. Underground optical fiber cables entering buildings shall comply with 770.47(A) and (B).

(A) Underground Systems with Electric Light, Power or Class 1 Circuit Conductors. Underground conductive optical fiber cables entering buildings with electric light, power, Class 1, or circuit conductors in a raceway, handhole enclosure, or manhole shall be located in a section separated from such conductors by means of brick, concrete, or tile partitions or by means of a suitable barrier.

(B) Direct-Buried Cables and Raceways. Direct-buried conductive optical fiber cables shall be separated by at least 300 mm (12 in.) from conductors of any electric light, power or Class 1 circuit conductors.

Exception No. 1: Direct-buried conductive optical fiber cables shall not be required to be separated by at least 12 in. (300 mm) from electric service conductors where electric service conductors are installed in raceways or have metal cable armor.

Exception No. 2: Direct-buried conductive optical fiber cables shall not be required to be separated by at least 12 in. (300 mm) from electric light or power branch-circuit or feeder conductors, or Class 1 circuit conductors where electric light or power branch-circuit or feeder conductors or Class 1 circuit conductors are installed in a raceway or in metal-sheathed, metal-clad, or Type UF or Type USE cables.

Informational Note: Utility company installation standards may require more stringent separation clearance for underground communication cables.