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Thread: Wire size.

  1. #1
    Join Date
    Oct 2001
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    Wire size.

    There is a need to run copper wires for electric heater. The heater will be three phase, 208 V 37 A.
    Can #8 gauge be used or the distance of 150 feet to the breaker panel would require #6 gauge?

  2. #2
    Join Date
    Mar 2015
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    My immediate response is to go #6, but, ...... That is without doing any Calculations sigma.
    Hos 4:6 My people are destroyed for lack of knowledge. Because you have rejected knowledge, I will also reject you, that you may be no priest to me. Because you have forgotten your God’s law, I will also forget your children.


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  3. #3
    Join Date
    Jan 2019
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    huntington beach calif
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    wire size

    Quote Originally Posted by sigma View Post
    There is a need to run copper wires for electric heater. The heater will be three phase, 208 V 37 A.
    Can #8 gauge be used or the distance of 150 feet to the breaker panel would require #6 gauge?
    1.73 x 208 = 359.84

    359 x 37 = 13,283 watts

    # 6 for sure

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