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Thread: Buried electric and gas lines

  1. #1
    Join Date
    Jul 2009
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    1

    Buried electric and gas lines

    Buried electric and gas lines
    Residential application from the house to the detached garage:
    Can the gas and electric lines be installed in the same trench?
    Does the gas have to be on top?
    What is the minimum separation between the electric conduit and gas pipe?
    Please provide code sections.
    Thank you

  2. #2
    Join Date
    Jun 2005
    Location
    North Logan, Utah
    Posts
    7,939
    Welcome to the forum.

    There is no NEC separation requirement for gas and electric lines in the same trench.

    Chris

  3. #3
    Join Date
    Dec 2005
    Location
    Sacramento, CA
    Posts
    72
    This is not NEC but Pacific Gas & Electric requires 12" minimum separation (12" radial clearance) between gas and electric conduits.

  4. #4
    Join Date
    Jun 2005
    Location
    North Logan, Utah
    Posts
    7,939
    Quote Originally Posted by walton View Post
    This is not NEC but Pacific Gas & Electric requires 12" minimum separation (12" radial clearance) between gas and electric conduits.
    That depends on whether or not the gas line between the house and the garage is run as a utility service or being fed from the gas service on the house.

    Chris

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