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Thread: Wiring size for upgraded hot tub

  1. #1

    Default Wiring size for upgraded hot tub

    I am replacing an existing hot tub with a new one. The new tub requires an electrical service of 240V 60amp. I have upgraded my circuit breakers at the panel and installed a 60 amp GFCI. Currently I am wired using 8awg. Will this wiring be sufficient for a 50' run? Or do I need to upgrade to a #6awg wire?

    Thanks for the help.


  2. #2
    In the Trades Bob NH's Avatar
    Join Date
    Oct 2005
    New Hampshire


    Ref: NEC Table 310.16

    8 AWG is rated for 50 Amps if it is not NM or other 60 C wire.

    You need 6 AWG in THWN for outside. You can usually use 8 AWG for the neutral and 10 AWG for the ground unless your inspector gets picky. My last one didn't bother with code and wanted 8 for the ground.

    It will all fit in a 3/4 conduit.


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