wmthompson90
Member
- Location
- ky
- Occupation
- electrician
How does one know if gear has gfi protection? Working with gear from Germany and waiting on unit specs.
1000 amp gfi protection
- Thread starter wmthompson90
- Start date
- Location
- New Jersey
- Occupation
- Journeyman Electrician
GFI or GFPE?
- Location
- Wisconsin
- Occupation
- PE (Retired) - Power Systems
It won't be there unless someone specifically specified.
- Location
- Wisconsin
- Occupation
- PE (Retired) - Power Systems
Most manufacturers and engineers call it GFI when the trip point is above 30ma, which would be the case with a 1000A circuit.
wmthompson90
Member
- Location
- ky
- Occupation
- electrician
I am willing to bet they did not. I have a temp on main inspection tomorrow and even if the inspector does not catch it, i will have to bring it up to him. We did not provide the gear yet rushed for power.
wmthompson90
Member
- Location
- ky
- Occupation
- electrician
what the code requires for 1000 amp or greater.
wmthompson90
Member
- Location
- ky
- Occupation
- electrician
So my answer to the inspector would be "yes if its programmed"?
- Location
- Wisconsin
- Occupation
- PE (Retired) - Power Systems
Don't you have drawings of the gear if it is being temped tomorrow?
wmthompson90
Member
- Location
- ky
- Occupation
- electrician
nvm i understand that was your reply to infinit and not my answer
wmthompson90
Member
- Location
- ky
- Occupation
- electrician
i have one lines. no drawings on the gear. my scope was getting power to it and another contractor taking over from there.
wmthompson90
Member
- Location
- ky
- Occupation
- electrician
I thought of the gfi protection a little late and requested gear drawings 2 days ago.
- Location
- Illinois
- Occupation
- retired electrician
210.13, 215.10 or 230.95 depending on the circuit being a branch circuit, feeder, or service. Note that this only applies to solidly grounded wye systems having more than 150 volts to ground but not exceeding 1000 volts phase-to-phase.
- Location
- New Jersey
- Occupation
- Journeyman Electrician
Isn't 30 ma the threshold for GFPE?
wmthompson90
Member
- Location
- ky
- Occupation
- electrician
This is a 480/277 wye system/systems
wmthompson90
Member
- Location
- ky
- Occupation
- electrician
The 1000amp gfi rule applies. There is no hazard had something trip(rules out the exception).
wmthompson90
Member
- Location
- ky
- Occupation
- electrician
I started in the trade in 08. I’m still green I guess. I’ll google it after this reply. I don’t know what that is or recall it in a code reference.
wmthompson90
Member
- Location
- ky
- Occupation
- electrician
I’m not use to gear coming from overseas. I have learned something from you more than once now. (Grim reaper) thank you
- Location
- San Francisco Bay Area, CA, USA
- Occupation
- Electrical Engineer
Yeah, electrical "gear" coming from overseas should ALWAYS be a red flag for compliance issues. Buyers for projects often are unaware that using foreign sources of electrical equipment is fraught with potentially EXPENSIVE problems getting it connected and passing inspection here. The suppliers overseas often don't know, don't understand or, in the case of China, don't even care that when it arrives, you can't connect it legally!
So aside from NRTL listing and the GF protection issue, what about SCCR? Yopur SCCR of the gear has to be equal to or greater than the available fault current. A lot of time even if they slap a UL label on something, they end up with a "courtesy" SCCR listing of only 5kA, which if it needs a 1,000A main, will be totally useless! Did anyone think to ask or are they just expecting you to "solve" that after the fact when it arrives? Because the rude awakening there is, you can't!
So aside from NRTL listing and the GF protection issue, what about SCCR? Yopur SCCR of the gear has to be equal to or greater than the available fault current. A lot of time even if they slap a UL label on something, they end up with a "courtesy" SCCR listing of only 5kA, which if it needs a 1,000A main, will be totally useless! Did anyone think to ask or are they just expecting you to "solve" that after the fact when it arrives? Because the rude awakening there is, you can't!