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remote building #99990
10/02/06 11:57 PM
10/02/06 11:57 PM
Sparky_1  Offline OP
Joined: Nov 2004
Posts: 14

My costumer wants to power up some existing lights in a commerical
building that has the service disconnected and service wires removed. Six foot away is another building with power in it, my plans are to run a short span of triplex from one building to the other and supply the lights with a single 20 amp circuit. Is this installation ok if I supply a service rated disconnect and bond the ground to the existing equipment?

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Re: remote building #99991
10/03/06 12:02 PM
10/03/06 12:02 PM
gfretwell  Offline

Joined: Jul 2004
Posts: 9,186
Just remember to isolate the neutral in the second building and this is pretty straight forward. Bond the EGC to the building grounding system, connect your lighting circuit to the disconnect from your feeder.

Greg Fretwell
Re: remote building #99992
10/03/06 06:50 PM
10/03/06 06:50 PM
renosteinke  Offline
Cat Servant
Joined: Jan 2005
Posts: 5,316
Blue Collar Country
And, of course, connect to the ground rod for the second building.

Re: remote building #99993
10/03/06 07:08 PM
10/03/06 07:08 PM
mikesh  Offline
Joined: Jun 2006
Posts: 613
Victoria, BC, Canada
If you are using triplex to feed the second building you will not isolate the neutral and will be providing a new ground electrode connected to the new neutral. If you are housing livestock in the second building this is the only permissable way to do this unless a tingle voltage isolator is installed between the ground and neutral.
If you are feeding the second building with ACWU, teck90, pipe and wire then you may run a bonding conductor to the second building panel and isolate the neutral from the ground.

Re: remote building #99994
10/04/06 08:03 AM
10/04/06 08:03 AM
Sparky_1  Offline OP
Joined: Nov 2004
Posts: 14
Thanks people,

Renosteinke, does the single circuit
EGC still connect to the ground rod?
250.32 (A) exception

Re: remote building #99995
10/04/06 12:34 PM
10/04/06 12:34 PM
tdhorne  Offline
Joined: Mar 2001
Posts: 345
Maryland, USA
You must bond the Equipment Grounding Conductor of the branch circuit to the existing Grounding Electrode System. If you run quad-plex you can use either a multi wire branch circuit or if it's thirty amperes or more you can use it as a single phase feeder to supply the existing equipment.
Tom Horne

Tom Horne

"This alternating current stuff is just a fad. It is much too dangerous for general use" Thomas Alva Edison


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