ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Potseal 11
Recent Posts
1913 American Electrician's Handbook
by gfretwell. 07/20/17 01:08 PM
600 KW 120/208 3 Phase Y protection
by gfretwell. 07/20/17 01:02 PM
Green House wiring
by ghost307. 07/20/17 09:10 AM
Permit Snafus...AHJs and Contractors Jump in
by HotLine1. 07/18/17 08:06 PM
New in the Gallery:
SE cable question
Popular Topics(Views)
239,177 Are you busy
174,573 Re: Forum
167,009 Need opinion
Who's Online Now
0 registered members (), 36 guests, and 8 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#91265 - 01/08/05 06:56 PM Bonding CW ?  
Dave33  Offline
Member
Joined: Jan 2005
Posts: 15
beinica ca
What size ground wire for 600 amp service?to the CW pipe.

also is every metel box required to have a ground pig tail? we always use ground pig tails in our switches and receps but what about above the ceiling?


2017 / 2014 NEC & Related Books and Study Guides

#91266 - 01/08/05 08:24 PM Re: Bonding CW ?  
tdhorne  Offline
Member
Joined: Mar 2001
Posts: 345
Maryland, USA
3/0 CU or 250 MCM Al. Is the maximum sized Grounding Electrode Conductor.

Every metal box in which circuit conductors are spliced within a box, or terminated on equipment within or supported by a box must be bonded to the Equipment Grounding Conductor.

250.148 Continuity and Attachment of Equipment Grounding Conductors to Boxes.
Where circuit conductors are spliced within a box, or terminated on equipment within or supported by a box, any separate equipment grounding conductors associated with those circuit conductors shall be spliced or joined within the box or to the box with devices suitable for the use. Connections depending solely on solder shall not be used. Splices shall be made in accordance with 110.14(B) except that insulation shall not be required. The arrangement of grounding connections shall be such that the disconnection or the removal of a receptacle, luminaire (fixture), or other device fed from the box will not interfere with or interrupt the grounding continuity.
Exception: The equipment grounding conductor permitted in 250.146(D) shall not be required to be connected to the other equipment grounding conductors or to the box.
(A) Metal Boxes. A connection shall be made between the one or more equipment grounding conductors and a metal box by means of a grounding screw that shall be used for no other purpose or a listed grounding device.


Tom Horne

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


Member Spotlight
Admin
Admin
NY, USA
Posts: 3,447
Joined: October 2000
Show All Member Profiles 
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.013s Queries: 14 (0.003s) Memory: 0.7440 MB (Peak: 0.8615 MB) Zlib enabled. Server Time: 2017-07-21 12:33:59 UTC