The Electrical Contractor Network

ECN Electrical Forum
Discussion Forums for Electricians, Inspectors and Related Professionals

Books, Tools and Test Equipment for Electrical and Construction Trades

Register Now!

Register Now!

We want your input!

Featured:
   

2017 NEC and Related
2017 NEC
Now Available!

   
Recent Posts
Forum Software Upgrade coming soon...
by Ruben Rocha
01/18/17 02:37 PM
Re: Fabricating Guards out of Lexan?
by frank
01/17/17 04:11 PM
Would ELV branch circuits be a good idea?
by gfretwell
01/17/17 01:26 PM
Why cables look like they do
by Texas_Ranger
01/17/17 12:33 PM
100% breakers?
by Texas_Ranger
01/16/17 06:13 AM
New in the Gallery:
Desk-mounted "power-board"
Top Posters (30 Days)
HotLine1 21
Webmaster 20
gfretwell 13
Trumpy 12
ghost307 12
Who's Online
2 registered (Ruben Rocha, Webmaster), 0 Guests and 208 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#99990 - 10/02/06 08:57 PM remote building
Sparky_1 Offline
Member

Registered: 11/20/04
Posts: 14
Hello,

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?

Top
2017 / 2014 NEC & Related Books and Study Guides
#99991 - 10/03/06 09:02 AM Re: remote building
gfretwell Offline


Member

Registered: 07/20/04
Posts: 9062
Loc: Estero,Fl,usa
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

Top
#99992 - 10/03/06 03:50 PM Re: remote building
renosteinke Offline
Cat Servant
Member

Registered: 01/22/05
Posts: 5305
Loc: Blue Collar Country
And, of course, connect to the ground rod for the second building.

Top
#99993 - 10/03/06 04:08 PM Re: remote building
mikesh Offline
Member

Registered: 06/07/06
Posts: 614
Loc: 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.

Top
#99994 - 10/04/06 05:03 AM Re: remote building
Sparky_1 Offline
Member

Registered: 11/20/04
Posts: 14
Thanks people,

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

Top
#99995 - 10/04/06 09:34 AM Re: remote building
tdhorne Offline
Member

Registered: 03/22/01
Posts: 344
Loc: 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

Top


ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals