ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Recent Posts
VFD MotorFeeders
by gfretwell. 10/19/17 01:02 AM
Generator Cable Sizing
by brsele. 10/18/17 07:39 PM
What do you do?
by gfretwell. 10/17/17 01:08 AM
Good ol' copper pipe in the fuse holder trick
by HotLine1. 10/16/17 07:16 PM
Another generator question
by HotLine1. 10/16/17 07:02 PM
New in the Gallery:
Gallery Test
Popular Topics(Views)
241,404 Are you busy
177,370 Re: Forum
168,973 Need opinion
Who's Online Now
0 registered members (), 14 guests, and 9 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#86754 - 12/02/03 09:57 PM arc welder OCP  
Tim Peters  Offline
Member
Joined: Mar 2003
Posts: 10
I'm installing a dedicated circuit for a portable arc welder. The min. rating is 15 amps at 120 volts and the max is 20 amps at 120 volts. Article 630-12 state that the OCP shall not be more than 200% of the max. My question is, what would be optimal? Should I install a 20 amp OCPD based off the MAX on the nameplate of the welder or should I use the Maximum stated by the NEC?

This kind of confused me because the code states no minimum only a maximum.


2017 / 2014 NEC & Related Books and Study Guides

#86755 - 12/03/03 05:28 PM Re: arc welder OCP  
electricman2  Offline
Member
Joined: Nov 2003
Posts: 269
Thomasville, NC USA
I believe that if the nameplate specified a 20A max OCPD, thats what I would use.


John


Member Spotlight
Bill Addiss
Bill Addiss
NY, USA
Posts: 3,878
Joined: October 2000
Show All Member Profiles 
Featured:

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

 

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.009s Queries: 14 (0.003s) Memory: 0.7426 MB (Peak: 0.8606 MB) Zlib enabled. Server Time: 2017-10-20 07:16:07 UTC