ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
nec 110.3 (B)
by gfretwell - 09/22/21 11:11 PM
Grounding electrodes
by gfretwell - 09/07/21 03:41 PM
Looking For Electricians in the Midlands
by Alex247 - 09/06/21 05:26 AM
New in the Gallery:
Now you know.
Now you know.
by Tom_Horne, September 7
February, North East Indiana
February, North East Indiana
by timmp, July 25
Who's Online Now
1 members (Scott35), 40 guests, and 21 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Joined: Mar 2003
Posts: 849
Y
Member
(13) 480 volt three phase. Spread around a 100000 sq. ft Plant for maintance. Motor generator type. 60 amp plug ins no info on welders at this time. What would the load you"d have to figure for the service be??
Would it be 630.11 (B).
Also if you jumped from welder to welder say 3 in a row.
Wire size & Breaker size??
Kinda Got a IDEA but never to proud to ask.
Yoopers

2017 / 2014 NEC & Related Books and Study Guides
Joined: Jan 2004
Posts: 1,507
G
Member
Ernie— Kinda tough to give wire and breaker size with no known specs. I don't know what you are suggesting when you say jump from welder to welder. I would say that 630.11(B) is the article for calculating the supply conductors and the load for the Service. At least that's how I'd call it. Bearing in mind all conductors must be protected at their ampacity per 240.4 and then there is the provision in 240.4(G) for welders. I've never been real comfortable with the fusing on conductors for welders but that's what it says and I guess there is a good track record. I know, let's ask the Design Professionals that question. I don't know what they will say since their kinda quiet on this issue.


George Little

Link Copied to Clipboard
Featured:

Tools for Electricians
Tools for Electricians
 

* * * * * * *

2020 Master Electrician Exam Preparation Combos
2020 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
mxslick
mxslick
Atomic City, ID USA
Posts: 806
Joined: October 2004
Top Posters(30 Days)
timmp 3
Popular Topics(Views)
283,074 Are you busy
216,807 Re: Forum
203,189 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5