GFCI

Status
Not open for further replies.
sndbodkin

sndbodkin

Member
Location
Blackfoot, Id
Recently I was approached by an electrical inspector on a job site where we had installed 50 amp 3ph 240 vac receptacles in a wet location. The inspector told me we would have to protect the receptacles with GFCI breakers as per 210.8B. This is a 240 volt 3ph delta service. The spec. sheet of the Square D 3 phase breakers available states 208/120 vac. Where the high leg is 240 volts to ground, does this code reference excuse the GFCI requirement in this location?
 
sndbodkin said:
Recently I was approached by an electrical inspector on a job site where we had installed 50 amp 3ph 240 vac receptacles in a wet location. The inspector told me we would have to protect the receptacles with GFCI breakers as per 210.8B. This is a 240 volt 3ph delta service. The spec. sheet of the Square D 3 phase breakers available states 208/120 vac. Where the high leg is 240 volts to ground, does this code reference excuse the GFCI requirement in this location?
Click to expand...
IMHO it does not excuse GFCI rule non-compliance. If breakers are not available look for something else.
 
So far the only 3P 50A GFCI I have found is that SQ D and it clearly says 120/208V.

Gonna be a bit rough when 2017 NEC kicks inless manufacturers are gearing up.

IMO, the NFPA went way overboard on this.
 
sndbodkin said:
Recently I was approached by an electrical inspector on a job site where we had installed 50 amp 3ph 240 vac receptacles in a wet location. The inspector told me we would have to protect the receptacles with GFCI breakers as per 210.8B. This is a 240 volt 3ph delta service. The spec. sheet of the Square D 3 phase breakers available states 208/120 vac. Where the high leg is 240 volts to ground, does this code reference excuse the GFCI requirement in this location?
Click to expand...

2017 NFPA-70 210.8(B) excludes your high-leg 240v to gound:
"and threephase receptacles rated 150 volts to ground or less"
 
Thank you for all your input on this. This change will be a major impact on our customer. I think a a lot of the changes in the NEC are driven by manufacture lobbyist trying to increase company revenues instead of safety and common sense.
 
sndbodkin said:
Thank you for all your input on this. This change will be a major impact on our customer. I think a a lot of the changes in the NEC are driven by manufacture lobbyist trying to increase company revenues instead of safety and common sense.
Click to expand...

There is a lot of that, I agree, but I think a big part of it is at the end of the session the cmp members want to go home feeling like they've done something to make the world a better place and saying, "We've done enough already, let's hold off on adding more regulations" doesn't give them that satisfaction.
 
dkidd said:
I think you mean 208v to ground.
Click to expand...
240v 3-phase Delta is 240v to ground not 208, much less 150.
GFCI protection > 150v to Ground not required under this section.

2017 210.8(B)
B) Other Than Dwelling Units. All single-phase receptacles rated 150 volts to ground or less, 50 amperes or less and three-phase receptacles rated 150 volts to ground or less, 100 amperes or less installed in the following locations shall have ground-fault circuit-interrupter protection for personnel.
 
Last edited:
Status
Not open for further replies.
Top