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    morgan_salas's Avatar
    morgan_salas Posts: 2, Reputation: 1
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    #1

    Jun 8, 2010, 11:08 AM
    I am hooking up a Hot tub with a max fuse size of 50 amps.
    I am hooking up a hot tub rated for a 50 amps max fuse size. I already have the #8 thhn and 1/2 liquid tight flex conduit. Will the #8 wire be enough for 50 amps.
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
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    #2

    Jun 8, 2010, 01:23 PM
    Yes, #8 copper THHN is good for 50 amps.

    I question the 1/2" flex.

    Most tubs that I know of need 4 wires, in this case 3-# 8 THHN and 1 - #10 THHN for the equipment ground.

    If the whip is short you may not have any problems fitting the wiring in the flex.
    morgan_salas's Avatar
    morgan_salas Posts: 2, Reputation: 1
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    #3

    Jun 8, 2010, 02:09 PM
    Quote Originally Posted by tkrussell View Post
    Yes, #8 copper THHN is good for 50 amps.

    I question the 1/2" flex.

    Most tubs that I know of need 4 wires, in this case 3-# 8 THHN and 1 - #10 THHN for the equipment ground.

    If the whip is short you may not have any problems fitting the wiring in the flex.
    Thank you. I am running a sub-panel with 3 wire and running a 4-wire from the sub to the tub.
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
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    #4

    Jun 8, 2010, 02:15 PM
    Subpanel needs a 4 wire also, otherwise what is is the 4 wire branch circuits, so your plan is flawed.
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