mshields
Senior Member
- Location
- Boston, MA
Ground fault is not required on a 208Y/120V service. I believe the reasoning behind this has to do with the fact that 120V line to ground cannot sustain an arc? Am I correct on this?
Be that as it may, clearly you can have a ground fault at 120V and it doesn't have to have anything to do with an arc. i.e. somebody ends up with current going through them, the GFI senses more current comming in via the hot than going out via the neutral and you get a ground fault.
I realize I'm probably mixing up my personnel protection ground fault protection with equipment ground fault protection. But in any event, I realize that there are holes in my understanding of this rudimentary subject. Can anyone help?
Thanks,
Mike
Be that as it may, clearly you can have a ground fault at 120V and it doesn't have to have anything to do with an arc. i.e. somebody ends up with current going through them, the GFI senses more current comming in via the hot than going out via the neutral and you get a ground fault.
I realize I'm probably mixing up my personnel protection ground fault protection with equipment ground fault protection. But in any event, I realize that there are holes in my understanding of this rudimentary subject. Can anyone help?
Thanks,
Mike