Code Quiz: Underground Systems Containing Mixed Wiring Types

April 23, 2015
NEC guidelines for installing underground systems containing mixed wiring types

Fill in the blank with the appropriate answer.

Per Sec. 820.47(A) of the 2014 NEC, when installing underground coaxial cables in a duct, pedestal, handhole enclosure, or manhole that contains electric light, power, or Class 1 or non-power-limited fire alarm circuit, conductors shall be in a section permanently separated from such conductors by means of a _________.

A)  suitable barrier

B)  rigid metal conduit

C)  intermediate metal conduit

D)  rigid polyvinyl chloride conduit

Find the Answer

Answer: A

Article 820 covers coaxial cable system installations. As noted in Sec. 820.47(A), when installing underground coaxial cables in a duct, pedestal, handhole enclosure, or manhole that contains electric light, power, or Class 1 or non-power-limited fire alarm circuit, conductors shall be in a section permanently separated from such conductors by means of a suitable barrier.

Owen is the owner and president of National Code Seminars and the holder of master electrician certifications in 46 states. He can be reached at [email protected].

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Steven Owen

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