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

Featured:

2017 NEC and Related
2017 NEC
Now Available!

Recent Posts
Members: Non-Members: Did you know?
by Admin
Today at 02:34 PM
Safety at heights?
by HotLine1
Yesterday at 08:51 PM
International Wire Colour Codes
by Texas_Ranger
Yesterday at 03:29 PM
Looking for older post
by Texas_Ranger
Yesterday at 03:22 PM
Last time to chat here
by Trumpy
01/20/17 11:41 PM
New in the Gallery:
Desk-mounted "power-board"
Shout Box

Top Posters (30 Days)
Admin 36
HotLine1 20
Ruben Rocha 17
gfretwell 16
Trumpy 15
Who's Online
1 registered (Admin), 83 Guests and 10 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#194119 - 05/11/10 10:20 AM Working on stolen copper replacement - 350/3 GGC
Grover Offline
Member
Registered: 01/19/05
Posts: 110
Loc: Sebago, ME, USA
Thieves got a bunch of copper - 15 runs in all - 2 runs are type GGC. Unfamiliar to me.

Can someone make me smarter about the GGC application? Has 2 ground wires, and a smaller "check wire".

Thanks!

Grov
Top
Work Gear for Electricians and the Trades
#194120 - 05/11/10 06:06 PM Re: Working on stolen copper replacement - 350/3 GGC [Re: Grover]
Tesla Offline
Member
Registered: 06/16/04
Posts: 1280
Loc: Sacramento, CA
_________________________
Tesla
Top
#194127 - 05/12/10 12:16 PM Re: Working on stolen copper replacement - 350/3 GGC [Re: Tesla]
Grover Offline
Member
Registered: 01/19/05
Posts: 110
Loc: Sebago, ME, USA
Thanks for comment. I know it's mining cable, and EXPENSIVE, What I'm looking for is how it's used for ground check....

Grov
Top
#194128 - 05/12/10 01:25 PM Re: Working on stolen copper replacement - 350/3 GGC [Re: Grover]
Tesla Offline
Member
Registered: 06/16/04
Posts: 1280
Loc: Sacramento, CA
The ground check cable is used in conjunction with a meter to determine if the grounding path has become impaired due to mechanical action/ pulling tension.

The logic is similar to a hospital setting: the grounding path must be perfect at all times to avoid a catastrophic spark.

The pdf lists the ohms per foot of the various cables. Any deviations from factory spec indicate a degraded grounding path. Continuous monitoring from the source end would permit the circuit to be de-energized the instant something went awry.

_________________________
Tesla
Top
#194178 - 05/14/10 08:04 AM Re: Working on stolen copper replacement - 350/3 GGC [Re: Tesla]
Grover Offline
Member
Registered: 01/19/05
Posts: 110
Loc: Sebago, ME, USA
Hi Tesla

Didn't see the PDF you referred to, but I think I've got the concept - sorta like a GFI on steroids:-)

Thanks!


Grov
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