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

Register Now!

Register Now!

We want your input!

Featured:
   

2017 NEC and Related
2017 NEC
Now Available!

   
Recent Posts
Webmaster > Admin
by Admin
31 minutes 10 seconds ago
failed home inspection.
by HotLine1
Today at 01:41 PM
Safety at heights?
by Trumpy
Today at 05:25 AM
Old Bath Fan
by gfretwell
Today at 01:38 AM
Search Function
by Webmaster
Yesterday at 11:13 PM
New in the Gallery:
Desk-mounted "power-board"
Top Posters (30 Days)
Admin 31
HotLine1 21
Ruben Rocha 16
Trumpy 13
gfretwell 13
Who's Online
2 registered (Admin, Ruben Rocha), 0 Guests and 198 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#169658 - 10/11/07 12:19 AM Motor disconnecting means
ih17dka8 Offline
Junior Member

Registered: 01/16/06
Posts: 8
Loc: Seoul, South Korea
Only if within sight of motor, using branch circuit breaker(a dedicated circuit breaker in panelboard for motor) as a disconnecting means is enough without additional safety switch regardless of motor horsepower for NEC code. Is that right?

NEC 430.109(A) shows that "molded case circuit breaker" can be served as a disconnecting means for motor.

However NEC 430.109(B)describe that "For stationary motors of 1⁄8 hp or less, the branch-circuit overcurrent shall be permitted to serve as the disconnecting means.

Would you enlighten me with your opinion?

Top
2017 / 2014 NEC & Related Books and Study Guides
#169666 - 10/11/07 07:04 AM Re: Motor disconnecting means [Re: ih17dka8]
sparkyinak Offline
Member

Registered: 07/08/07
Posts: 1308
Loc: Alaska
1/8 hp max if using a breaker. 430.109(A) is general conditions while(B) is specific. When I get confused on an article, I will read the entire article. Then I will "remove" all the paragraphs that do not apply to my situation then read it again. In this case if you only read 430.109,430.109(A), and 430.109(B), you ought to be enlightened.
_________________________
"Live Awesome!" - Kevin Carosa

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