• Code Quiz: Underground Systems Containing Mixed Wiring Types

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

    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].

    About the Author

    Steven Owen

    Sign up for EC&M Newsletters
    Get the latest news and updates.

    Voice Your Opinion!

    To join the conversation, and become an exclusive member of EC&M, create an account today!