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Old 04-19-2013, 07:50 AM   #1
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Hot tub ground from panel


Hi, Just installed a new hot tub. ran #6 NMB inside to # 6 THHN/THWN outside with a #10 ground. My inspector wants a #8 ground per a grey comment in the hot tub manual. I can pull out the #10 and add a #8 outside but what do I do inside since I ran NMB? Any help would be appreciated.

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Old 04-19-2013, 12:54 PM   #2
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Hot tub ground from panel


What was the reason given for the red sticker? The inspector should be able to provide the reason something failed.

If the manufacturer states what is needed for the wiring that is what you need to do, even if it exceeds the electrical code.

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Old 04-19-2013, 01:05 PM   #3
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Hot tub ground from panel


If your inside wiring is #6 NM, then the ground is already large enough. Right?
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Old 04-19-2013, 01:28 PM   #4
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Hot tub ground from panel


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If your inside wiring is #6 NM, then the ground is already large enough. Right?
I think 6-3 NM only has a #10 ground
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Old 04-19-2013, 03:35 PM   #5
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Hot tub ground from panel


Some tubs are calling for a full sized #6 grounding conductor.
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Old 04-19-2013, 04:03 PM   #6
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Hot tub ground from panel


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Some tubs are calling for a full sized #6 grounding conductor.
I've yet to wire a tub that hasn't required a full size EGC, makes it impossible to use NM.
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Old 04-19-2013, 04:09 PM   #7
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I would like to know what the tub makers think they are accomplishing by specing a full sized ground. A waste of materials for no benefit.
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Old 04-19-2013, 04:11 PM   #8
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I would like to know what the tub makers think they are accomplishing by specing a full sized ground. A waste of materials for no benefit.
I'm not sure, but I'm betting someone uneducated in the electrical field thought this would resolve any type of warranty issue claimed by the owner.

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