NEC 210.8(B)(2)
- Thread starter anbm
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Elect117
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- California
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- Engineer E.E. P.E.
no. They will still require GFCI protection. The section requires the GFCI be located in the branch circuit. The G in LSIG is for ground fault protection of equipment. Not personnel. Their trip points are not the same.
pipe_bender
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- Boston
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- Electrician
Even if it were allow it would never work on a feeder, the capactive coupling from all the branch circuits and all the equipment would be above 5ma.
In a commercial kitchen you want as short a run as possible on a GFCI, I think manufacturers suggest ~150 feet of wire max.
In a commercial kitchen you want as short a run as possible on a GFCI, I think manufacturers suggest ~150 feet of wire max.
wwhitney
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- Berkeley, CA
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- Retired
I don't see anything in 210.8(B) that says that. You could GFCI protect a feeder, and it would GFCI protect all the receptacles supplied by all the branch circuits that the feeder supplies. Of course, it may be too sensitive, as it would be looking at the sum of the leakage currents from all the branch circuits supplied (as pipe_bender just commented).
Cheers, Wayne
pipe_bender
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- Boston
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- Electrician
One of the spa manufacturers I forget the name switched from one 50A GFCI to the spa to a 2-pole 20 and a 2-pole 30, circuit, so extra $ for us on each install.
back before the AI takeover I called their tech support and got a real human whom was quite knowledgeable when I asked if I could use a 2-pole 50 on the feeder to save some $$$ and she said fine but the capacitive coupling may make not work if the circuit is too long.
back before the AI takeover I called their tech support and got a real human whom was quite knowledgeable when I asked if I could use a 2-pole 50 on the feeder to save some $$$ and she said fine but the capacitive coupling may make not work if the circuit is too long.
But some elec. outlets > 20A are out available with GFCI protection, what is the solution?
Elect117
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- California
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- Engineer E.E. P.E.
Are you referring to 215.9?
I didn't see that. I always assumed that the GFCI requirement to protect receptacles would require it be present in the branch circuit.
GFCI protection exists for all of the requirements of 210.8. You might need to put them on a GFCI breaker.
GFCI breakers are available thru about 60 amp (I think Siemens now offers a 100 amp unit), or you can purchase GFCI protection from manufacturers such as Littlefuse for higher amperage use.
wwhitney
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- Berkeley, CA
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- Retired
I was not, although it is on point. But basically unnecessary, as 210.8(B) has no language about the GFCI being located in the branch circuit. It just has to be at or upstream of the receptacle, so the receptacle is protected.
Cheers, Wayne
50A GFCI breaker is not standard correct?
50 amp GFCI breakers are available from most, if not all, manufacturers.
Elect117
Senior Member
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- California
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- Engineer E.E. P.E.
They make 50A GFCI breakers.