ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
AreMetal Ladders Ever OK For Electrical Work?
by gfretwell. 01/22/18 01:15 AM
VDE 0100 to introduce AFCIs
by sparky. 01/20/18 05:09 PM
MRI LED lights dimmer control replacement - wow!
by Potseal. 01/19/18 08:52 PM
Video: Inventor of the GFCI self-testing shocks
by Bill Addiss. 01/17/18 11:11 PM
New in the Gallery:
Housebilding DIY wiring
SE cable question
Who's Online Now
0 registered members (), 12 guests, and 10 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Parellel wiring #87371
02/23/04 08:34 PM
02/23/04 08:34 PM
W
Wirenuttt  Offline OP
Member
Joined: Nov 2002
Posts: 267
Massachusetts
In parallel wiring, when sizing the ground,do you parallel the ground and figure each ground at full rating. In other words, if you have parallel 350s to give you 600 amps, do you pull each ground rated at 600 amps, or do you figure each at 300 amps. I would think you would figure each at 600 amps for full protection. This is for grounding raceway and equipment.

2017 / 2014 NEC & Related Books and Study Guides
Re: Parellel wiring #87372
02/23/04 09:20 PM
02/23/04 09:20 PM
J
Jim Phillips  Offline
Junior Member
Joined: Feb 2004
Posts: 2
Canton, Ohio U.S.A.
NEC 250.122(F)(1) Size them based on the upstream overcurrent device as shown in Table 250.122. i.e 600A = minimum #1 Copper

Jim

Re: Parellel wiring #87373
02/24/04 12:23 PM
02/24/04 12:23 PM
W
Wirenuttt  Offline OP
Member
Joined: Nov 2002
Posts: 267
Massachusetts
Thanks Jim;
That was exactly what I needed.

~Andy


Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
dougwells
dougwells
kamloops BC Canada
Posts: 1,142
Joined: May 2003
Show All Member Profiles 
Top Posters(30 Days)
Admin 21
sparky 16
Potseal 15
Popular Topics(Views)
243,592 Are you busy
180,388 Re: Forum
170,861 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.014s Queries: 14 (0.004s) Memory: 0.9487 MB (Peak: 1.0732 MB) Zlib enabled. Server Time: 2018-01-22 12:11:21 UTC