Smog Equip. on GFCI

[wchild1520]

New to forum first time posting.
The company I work for is retrofitting diesel trucks with required smog equip.
It uses 2800w at 208v single phase. Each regeneration station consists of a 20a gfci, a disconnect switch, and a flexible cord . The switch and cord are mounted on a pedastal out doors. The problem is when some of the trucks are plugged in the gfci trips, so they want me to remove them. I would like to find something in NEC that wouldprevent this?

 

[cowboyjwc]

If I understand your question correctly, look at 210.8(B). You are not required to have GFCI protection on a 208v receptacle.

 

[charlie b]

I agree that GFCI is not required for 208 volt receptacles.

That said, if a GFCI is tripping, that means that some amount of current is leaving the source on the "hot" conductor, and is not returning to the source on the neutral. That is a problem. The problem is not about the inconvenience of having the circuit trip when a truck is plugged in. The problem is about leakage current. GFCI's exist for one purpose only: to protect human life. I think some effort should be made to locate and correct the source of the leakage current.

 

[wchild1520]

If I understand your question correctly, look at 210.8(B). You are not required to have GFCI protection on a 208v receptacle.

I read 210.8(b) . So anything over 125v doesn't need gfci?

 

[wchild1520]

I agree that GFCI is not required for 208 volt receptacles.

That said, if a GFCI is tripping, that means that some amount of current is leaving the source on the "hot" conductor, and is not returning to the source on the neutral. That is a problem. The problem is not about the inconvenience of having the circuit trip when a truck is plugged in. The problem is about leakage current. GFCI's exist for one purpose only: to protect human life. I think some effort should be made to locate and correct the source of the leakage current.

I agree there is a safety issue that is why i want to keep the gfci ,so they will have to fix the equip that was installed on the trucks.

 

[cowboyjwc]

Yes anything over 125v does not need GFCI.

And I do agree with Charlie, I just didn't take my answer that far.

 

[kacper]

Yes anything over 125v does not need GFCI.

And I do agree with Charlie, I just didn't take my answer that far.

Yes, with the exception of:
NEC 680.22,5(B)
NEC 680.32
NEC 680.44
NEC 680.51(A)
NEC 680.62(A)

 

[ceb58]

Do they make a 208v GFCI recp.? Or could it be a 120v GFCI from a 120/208 system?

 

[kacper]

Yes, with the exception of:
NEC 680.22,5(B)
NEC 680.32
NEC 680.44
NEC 680.51(A)
NEC 680.62(A)

Also
Natural and Artificially Made
Bodies of Water 682.15 (for some reason it skip my attention)