hillbilly1
Senior Member
- Location
- North Georgia mountains
- Occupation
- Owner/electrical contractor
Are the lugs in the ATS rated for two wires?
400A service with (2) 200A panels
- Thread starter RdmanElect
- Start date
farmantenna
Senior Member
- Location
- mass
Hmm, yeah you can. Flat sealing washer. $3?
- Location
- Tennessee NEC:2017
- Occupation
- Semi-Retired Electrician
RdmanElect
Member
- Location
- Poughkeepsie NY
- Occupation
- Electrical Contractor
Good call!! Appreciate that! Luckily the inspector overlooked it.. but there was no way I was gonna get 4/0-4/0-1/0-1/0 through 160' of 2" with multiple bends.. maybe I can be meet exception no 2 with it being existing conduits that were installed 2 years ago when they planned don having it a 200a service..I'll count my blessings and take this as a learning experience.
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RdmanElect
Member
- Location
- Poughkeepsie NY
- Occupation
- Electrical Contractor
Thanks for the information..I used what you recommended
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Knightryder12
Senior Member
- Location
- Clearwater, FL - USA
- Occupation
- Sr. Electrical Designer/Project Manager
Did not know you could take (2)200 amp sets of conductors off of a 400 amp breaker to two different panels. I thought you would have to tap off of them in a wireway/jb and run the 200a rated set to each panel and each panel would have to have a main.
hillbilly1
Senior Member
- Location
- North Georgia mountains
- Occupation
- Owner/electrical contractor
If the breaker is rated for two wires per lug, or has double lugs, provided you don’t exceed the tap rule length, and yes, the panel would need a main not to exceed the wire rating.
Knightryder12
Senior Member
- Location
- Clearwater, FL - USA
- Occupation
- Sr. Electrical Designer/Project Manager
He said it was 160'.
hillbilly1
Senior Member
- Location
- North Georgia mountains
- Occupation
- Owner/electrical contractor
That’s a good question, is he saying the generator is 160’ away? Or the entire service and transferswitch is 160’ away from the house? After looking at the panel picture, the feed is not back to back, and appears to go across the ceiling, so there is pretty much no way it would meet the tap rule even if the t’switch was just outside the house.
hillbilly1
Senior Member
- Location
- North Georgia mountains
- Occupation
- Owner/electrical contractor
Yeah, it has to be less than 25’ to the panels from the transferswitch, which from the pictures shown, it most likely isn’t. If the service and transferswitch is 160’ from the house, ocp is required at point of entry on both feeds, which does not appear to be that way in the pictures either. So the install is not code compliant.
AC\DC
Senior Member
- Location
- Florence,Oregon,Lane
- Occupation
- EC
What exception 2 are your referencing.
Seven-Delta-FortyOne
Goin’ Down In Flames........
- Location
- Humboldt
- Occupation
- EC and GC
Thanks for the information..I used what you recommended
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What’s in your picture is a bushing. It’s for wire protection, which, incidentally, I don’t usually use on PVC conduit.
The sealing washer Don is talking about is the (usually) yellow washer, like what is on a LFNC connector.
AC\DC
Senior Member
- Location
- Florence,Oregon,Lane
- Occupation
- EC
the sealing washer is there its blue and built into the lock nut
hillbilly1
Senior Member
- Location
- North Georgia mountains
- Occupation
- Owner/electrical contractor
Yeah, he has one under there, it is blue, so it doesn’t show up well against the gray.
hillbilly1
Senior Member
- Location
- North Georgia mountains
- Occupation
- Owner/electrical contractor
You beat me to it!
- Location
- Tennessee NEC:2017
- Occupation
- Semi-Retired Electrician
If the conductors are #4 or larger, the bushing is required, PVC or not.
- Location
- Tennessee NEC:2017
- Occupation
- Semi-Retired Electrician
Shouldn't the washer be on the outside?
Seven-Delta-FortyOne
Goin’ Down In Flames........
- Location
- Humboldt
- Occupation
- EC and GC
I should put my glasses on before I post. 
I see it now.
Never seen one on the inside though.
I see it now.
Never seen one on the inside though.
AC\DC
Senior Member
- Location
- Florence,Oregon,Lane
- Occupation
- EC
I would put them in anyway but if an EMT conductor with the insulated throats do they need bushing?
LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
I've always thought so, to seal between two flat surfaces, the connector and the enclosure.
Washers won't seal against the thread like sealing lock-washers with rubber O-rings have to.
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