ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
Do we need grounding?
by gfretwell - 04/06/24 08:32 PM
UL 508A SPACING
by tortuga - 03/30/24 07:39 PM
Increasing demand factors in residential
by tortuga - 03/28/24 05:57 PM
Portable generator question
by Steve Miller - 03/19/24 08:50 PM
240V only in a home and NEC?
by dsk - 03/19/24 06:33 AM
New in the Gallery:
This is a new one
This is a new one
by timmp, September 24
Few pics I found
Few pics I found
by timmp, August 15
Who's Online Now
1 members (Scott35), 39 guests, and 11 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
#39090 06/08/04 10:11 PM
Joined: Dec 2001
Posts: 444
S
Sandro Offline OP
Member
Do I need to run a separate ground from the panel to EACH isolated ground receptacle, or can I run a single insulated ground conductor from the panel and stop off at each junction box and pick up each IGR at each station JB? Is there a limit to how many IG I can pick off of a single line?

#39091 06/08/04 11:14 PM
Joined: Mar 2004
Posts: 947
T
twh Offline
Member
In Canada, see rule 10-906(9)

#39092 06/09/04 03:26 AM
Joined: Jan 2003
Posts: 4,391
I
Moderator
It is up to you and the job specifications.


Bob Badger
Construction & Maintenance Electrician
Massachusetts
#39093 06/09/04 05:10 PM
Joined: Apr 2004
Posts: 349
Member
IG doesn't mean dedicated ground for each outlet. As Iwire says, check your specifications. Generally it means a separate isolated and insulated grounding wire besides the equipment grounding conductor.

So, for a 120V outlet, one would end up with a hot, a neutral, an equipment ground (for the conduit & outlet box), and an isolated ground (for the ground prong of a receptacle).

You can usually string several IG outlets together without a problem, depending on specifications. However, some engineers and/or specifiers have different ideas about what IG means.

Lastly, if the breaker panel feeding your circuit does not have an IG bus with an upstream isolated ground conductor back to the main, are you really getting an isloated ground?

Radar


There are 10 types of people. Those who know binary, and those who don't.

Link Copied to Clipboard
Powered by UBB.threads™ PHP Forum Software 7.7.5