wbalsam1
Senior Member
- Location
- Upper Jay, NY
wireman71 said:
I've thought about that, but it wouldn't comply with 300.3(B). I wish there was relief at 250.130, but no go.
No equipment grounding conductor in 12 feeders
- Thread starter wbalsam1
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I've thought about that, but it wouldn't comply with 300.3(B). I wish there was relief at 250.130, but no go.
wbalsam1
Senior Member
- Location
- Upper Jay, NY
wireman71 said:
I know of no one on the Town Board who would create an exception to a fault-return path.
Engineering a solution would most likely involve a variance at the state level, since the local AHJ (town board) is not empowered to vary the state building code which references the NEC. This would end up as expensive and time consuming as just fixing it by pulling in the proper EGC's. :smile:
- Location
- Windsor, CO NEC: 2023
- Occupation
- Hospital Master Electrician
The service isn't at a seperate structure from the subpanels?
lpelectric
Senior Member
georgestolz said:
No. The service is located within the building towards the center. It is fed from service conductors under a concrete slab up into the service equipment. The main 1,000 ampere service and 12 metering positions are all one piece of equipment. Each of the remote panelboards are located within the stores they serve and are energized by feeders contained within schedule 40 pvc. No EGC is present at any feeder panelboard. :smile:
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I'm sorry. I'm not convinceed we have a problem, at least accordning to our local standards..
I undestand we have a "main" but am unsure if the "feeders" are indivdually protected.
It's not uncommon in this area to have a "POCO disconnect" ahead of a multi-meter center (with no other disconnects) and "services" going under
the slab to individual tennant spaces.
Igoring the "POCO" disconnect, the multi-meter, multi service arrangement has been accepted here for years under the "multipl occupancy" rule.
If POCO has a disconnect that has no effect on the suituation in our AHJ area.
If there are overcurrent protective means on each of these "feeds" to the individual areas, then there would be no quetion locally concening a EGC, but without furthur info, it's possible that this arrangement here would be multiple occupancy services.
I undestand we have a "main" but am unsure if the "feeders" are indivdually protected.
It's not uncommon in this area to have a "POCO disconnect" ahead of a multi-meter center (with no other disconnects) and "services" going under
the slab to individual tennant spaces.
Igoring the "POCO" disconnect, the multi-meter, multi service arrangement has been accepted here for years under the "multipl occupancy" rule.
If POCO has a disconnect that has no effect on the suituation in our AHJ area.
If there are overcurrent protective means on each of these "feeds" to the individual areas, then there would be no quetion locally concening a EGC, but without furthur info, it's possible that this arrangement here would be multiple occupancy services.
lpelectric
Senior Member
augie47 said:
The service conductors come from the poco transformer and are routed under the concrete slab in pvc conduits up into a 1,000 amp disconnecting CB that is part of a 12 meter position piece of equipment that has 12 CB's that go to 12 feeders that go to different stores. None of the feeders have EGC's and each one is run in 3"pvc.
wbalsam1
Senior Member
- Location
- Upper Jay, NY
benaround said:
I like this idea. Any idea what a 75KVA xfrmr goes for?
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