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Thread: Can I install conduit underneath a baeboard heater

  1. #1
    DIY Junior Member farmfresh's Avatar
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    Default Can I install conduit underneath a baeboard heater

    I need to install 2 baseboard heaters on a brick wall in a very dry basement. I will also need to install some outlets between the baseboard heaters(the outlets will be about 4 feet to the side of the heaters). I'll run the 240v for the baseboards in conduit, but I can't seem to find any information about the legality/safety of running additional conduit for the 120 V outlets below the heaters. Seems like no problem to me, the building inspector didn't seem to have a problem with it, but also didn't seem to fully understand what I meant. Any thoughts?

  2. #2

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    I would only allow it if the wire was properly rated for the heat and you also provided derating calculations for the circuit.
    http://www.inspectpa.com/forum/forum.php
    My answers are based mostly on the ICC codes. Advice given is my personal opinion and every person performing work should acquire a permit from his/her jurisdiction and get the work inspected. My opinions are not directions to follow for DIYs or professionals

  3. #3
    I&C Engineer (mostly WWTP) Lakee911's Avatar
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    That's true, jar, but how much heat radiates downwards from those?

  4. #4

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    Quote Originally Posted by Lakee911 View Post
    That's true, jar, but how much heat radiates downwards from those?
    Interesting question!

    I have no idea where you would find that data (for a baseboard heater), however I do know that when installing a wood stove, the installation instructions will require a certain R-Value (insulation) hearth/pad if installing the wood stove on a combustible material like a wood floor.

    Also there are 3 types of heat transfer... Radiation, conduction and convection. More...

    Heat...
    http://en.wikipedia.org/wiki/Heat

    Thermal radiation...
    http://en.wikipedia.org/wiki/Thermal_radiation

    Conduction (heat)...
    http://en.wikipedia.org/wiki/Heat_conduction

    Convection...
    http://en.wikipedia.org/wiki/Convection

  5. #5
    Moderator & Master Plumber hj's Avatar
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    Default heat

    It would partly depend on whether the baseboard heats strictly by radiation, or if also uses convection currents through it. If so, then anything underneath it that could obstruct the air flow would not be permitted.

  6. #6
    Licensed Electrical Contractor Speedy Petey's Avatar
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    Quote Originally Posted by jar546 View Post
    I would only allow it if the wire was properly rated for the heat and you also provided derating calculations for the circuit.
    You would seriously ask for a "derating calculation"????

    I will also ask: How much heat is actually directed down from an electric baseboard heater? Not much in my opinion.
    Answers based on the 2008 & 2011 NEC. If you're on the '14 already I feel sorry for you.

  7. #7

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    Quote Originally Posted by Speedy Petey View Post
    You would seriously ask for a "derating calculation"????

    I will also ask: How much heat is actually directed down from an electric baseboard heater? Not much in my opinion.
    Correct, your opinion. I need facts
    http://www.inspectpa.com/forum/forum.php
    My answers are based mostly on the ICC codes. Advice given is my personal opinion and every person performing work should acquire a permit from his/her jurisdiction and get the work inspected. My opinions are not directions to follow for DIYs or professionals

  8. #8
    Licensed Electrical Contractor Speedy Petey's Avatar
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    OK then. I'll let you know when I get them.
    Answers based on the 2008 & 2011 NEC. If you're on the '14 already I feel sorry for you.

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