Can you elaborate on your statement? My brain is currently drawing a blank on the concept of NO ground fault protection being permitted....
Remember solidly grounded wye needs ground fault protection where the delta would not.
Can you elaborate on your statement? My brain is currently drawing a blank on the concept of NO ground fault protection being permitted.
Hmmm... I can't locate a 250.95 in either 2008 or 2011 NEC. Even if it were there, that is the Part on Bonding???I believe that he's thinking of 250.95 but that would only apply when the amperage reached 1000 amps or more.
Can you elaborate on your statement? My brain is currently drawing a blank on the concept of NO ground fault protection being permitted.
I believe that he's thinking of 250.95 but that would only apply when the amperage reached 1000 amps or more.
Can i use a 480/ 277 volt wye generator to feed a 480 volt delta fed building ?
1200 amp whole building ATS and generator
But this is not to say there is no ground fault protection [or detection] for delta systems. It simply addresses the fact that on solidly grounded wye systems that gf current on [unprotected] grounded conductor can exceed that of any one ungrounded conductor.It is 230.95. Maybe you just had a typo infinity?
OP has 1200 amp delta. 230.95 requires GF protection @1000+ but only says solidly grounded wye systems.
215.10 also requires same thing for feeders.
But this is not to say there is no ground fault protection [or detection] for delta systems. It simply addresses the fact that on solidly grounded wye systems that gf current on [unprotected] grounded conductor can exceed that of any one ungrounded conductor.
It is 230.95. Maybe you just had a typo infinity?
OP has 1200 amp delta. 230.95 requires GF protection @1000+ but only says solidly grounded wye systems.
215.10 also requires same thing for feeders.