Inground pool 50a electric pool heater GFI.

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RMELECT

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Location
New England (USA)
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Electrician
I've read the code section so many times and still can't convince myself I have the right answer.... Does an electric 240v 1p pool heater need a GFI c/b? My brain keeps saying yes but the code keeps telling me I'm not sureo_O. We don't put them on hot water heaters and commercial dishwasher equipment. Need help so I can sleep tonight. Thanks
 
The only pool heater that the NEC requires GFCI protection for is a gas heater.
680.28 Gas-Fired Water Heater.
Circuits serving gas-fired swimming pool and spa water heaters operating at voltages above the low-voltage contact limit shall be provided with ground-fault circuit-interrupter protection for personnel.
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That was a new rule in the 2017 code.

EDIT: My comment is not 100% correct for a dwelling unit where the heater is supplied by an outside outlet, as in that case 210.8(F) in the 2020 code would apply.
 
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That's the way I looked at it but I have the electrical inspector saying I need one. I'm afraid that the heater will trip the GFI breaker,
 
RMELECT said:
That's the way I looked at it but I have the electrical inspector saying I need one. I'm afraid that the heater will trip the GFI breaker,
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Tell him that you believe he is incorrect and could he show you where it is stated in art. 680
 
I hear you but I've already done that. I thought maybe I was missing something in the code. I have never done a pool heater but have done lots of pools and equipment. Thanks for the info.
 
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