Dedicated circuit for in-floor heat.

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I would assume manufacturer's instructions and 210.23 would be your guide.
All that I have inspected have been on a dedicated circuit but 'my world' is small. :D
 
So if manufactures instructions says recommended dedicated circuit could you put the in floor heat on a bathroom circuit?
I'm at a large commercial job for a nursing home and the print shows home run to bathroom gfci then to feed t-stat for infloor heat in the bathroom.
I'm a little confused right now and I'm not finding my answer.

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I would say that all depends on the amount of load that the system imposes on the circuit. We are having our master bathroom remodelled, and it will include in-floor heat. The electrician tells me that he plans to connect the in-floor heat, the overhead light/fan, the light above the vanity, the heated towel rack, and the GFCI receptacle to the same 20 amp circuit. Since the circuit will serve nothing outside that bathroom, and since all the loads combined will not exceed 20 amps, I would call it compliant.
 
What is the rating (load) of the floor heat ?
If you did not put it on a dedicated circuit would it violate 210.23 ?

Not all inspectors read it the same, but many read 110.3(b) to state that if the mfg instructions call for dedicated circuit you must put it on a dedicated circuit.

Floor heat requires GF protection (424.44). You might want to make sure your prints are not referencing that requirement.
 
This is just an opinion. I'm thinking that because this is a commercial bathroom and they don't think that receptacle will get much use and isn't even required that they will save space in the panel by putting the heat and the GFCI on the same circuit.

I'm thinking that people in a nurseing home still may want to use a hair dryer and this is not a good design.

It probably will pass inspection but to be sure you had better consult with the inspector.


When in doubt go to authority having jurisdiction.
 
That's kind of what I was thinking but for some reason I thought heating circuits had to be on a dedicated circuit. Then I read 210.23 and I assume it falls under utilization equipment fastened in place. Correct?

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charlie b said:
The electrician tells me that he plans to connect the in-floor heat, the overhead light/fan, the light above the vanity, the heated towel rack, and the GFCI receptacle to the same 20 amp circuit. Since the circuit will serve nothing outside that bathroom, and since all the loads combined will not exceed 20 amps, I would call it compliant.
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Compliant yes. Good idea, no.

I can easily see the floor heat, towel rack, Maybe 300W of lights, 1800W of hair dryer and even a curling iron on at the same time. Breaker trips and panel in basement. Unhappy Charlie.

You really should get some of that hair cut.
 
IIRC, the last in-floor heat I installed (several years ago) was rated to draw 2.4 amps or some such number...it was very minimal and I was surprised.

I would also say read the manufacturers instructions carefully. There is a difference between a recommendation and a requirement.
 
It would be compliant, unless the manufactures instructions state other wise, is what I'm gathering and kind of thought. I will just have find out what manufacturer states. Thanks everyone!

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There is a big difference between a manufacturer's recommendations, a manufacturer's instructions, and "instructions included in the listing or labeling." That last phrase is what appears in 110.3(B), not the first two.
 
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