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Thread: EGC tap conductors

  1. #1
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    Jul 2017
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    EGC tap conductors

    I have utility service coming into main breaker sized 2500 amps 120/208v three phase. Load side of the main breaker feeds bus. The bus is tapped with 4#600 kcmil to discoonect less than 10 feet. What size equipment ground wire be installed from tap to discoonect 1#350kcmil or 1#3 awg?

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  2. #2
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    Quote Originally Posted by codequestion View Post
    I have utility service coming into main breaker sized 2500 amps 120/208v three phase. Load side of the main breaker feeds bus. The bus is tapped with 4#600 kcmil to discoonect less than 10 feet. What size equipment ground wire be installed from tap to discoonect 1#350kcmil or 1#3 awg?

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    350kcmil

  3. #3
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    Quote Originally Posted by david luchini View Post
    350kcmil
    Where in code says that?

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  4. #4
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    Quote Originally Posted by codequestion View Post
    Where in code says that?

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    250.122(G)

  5. #5
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    Quote Originally Posted by david luchini View Post
    250.122(G)
    pretty clear

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    or you could use metal conduit and not need a wire type EGC at all.
    Bob

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