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Thread: Commercial PV conduit

  1. #1
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    Mar 2015
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    Commercial PV conduit

    Hi,

    I'm working on a PV system that's going on a large flat roof. The city fire department said that it wants the conductors on the roof to be covered somehow so firefighters and other personnel won't trip on them. They even suggested putting the conductors under the roof (???). Would anyone be able to refer to a method or product that I could use to fulfill their request?

    Regards,
    Andy

  2. #2
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    Quote Originally Posted by andrew.tkelly View Post
    Hi,

    I'm working on a PV system that's going on a large flat roof. The city fire department said that it wants the conductors on the roof to be covered somehow so firefighters and other personnel won't trip on them. They even suggested putting the conductors under the roof (???). Would anyone be able to refer to a method or product that I could use to fulfill their request?

    Regards,
    Andy
    That sounds capricious to me. Ask to see the regulation you would be violating.

  3. #3
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    Agreed. I will ask them. Btw, I meant to say "conduit" and not "conductors".

  4. #4
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    Quote Originally Posted by andrew.tkelly View Post
    . . on the roof to be covered somehow so firefighters and other personnel won't trip on them.
    What's to stop them from tripping over the covering?
    Code references based on 2005 NEC
    Larry B. Fine
    Master Electrician
    Electrical Contractor
    Richmond, VA

  5. #5
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    Quote Originally Posted by LarryFine View Post
    What's to stop them from tripping over the covering?
    ....or the gas lines on the roof, what about those?
    Ethan Brush - East West Electric. NY, WA. MA

    "You can't generalize"

  6. #6
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    Quote Originally Posted by electrofelon View Post
    ....or the gas lines on the roof, what about those?
    Or HVAC condensate lines?

  7. #7
    Join Date
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    maybe little red flags, labels on conduit, upright UV resistant placards, some sort of obvious warning signs?

    Is this because you are running conduit in a setback area or where it is not allowed?

  8. #8
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  9. #9
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    Quote Originally Posted by PWDickerson View Post
    One would think that putting those in setbacks or designated pathways would suffice.

    One disadvantage is that it may raise the temperature adder for the low distance to the roof, thus raising the conductor size throughout.

  10. #10
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    Quote Originally Posted by jaggedben View Post
    One would think that putting those in setbacks or designated pathways would suffice.

    One disadvantage is that it may raise the temperature adder for the low distance to the roof, thus raising the conductor size throughout.
    I still think the OP should make the fire marshal quote the regulation he is trying to enforce. I see conduits, gas lines, condensate drip lines, etc., running all over flat rooftops all the time.

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