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!


2017 NEC and Related
2017 NEC
Now Available!

Recent Posts
Parking lot pole light swap....
by gfretwell
10/24/16 08:46 PM
International Wire Colour Codes
by Tjia1981
10/23/16 12:08 PM
Son of Sparky
by HotLine1
10/20/16 07:43 PM
Speaking of Plugmold ...
by gfretwell
10/17/16 02:37 PM
Broken battery charger? Check for cobwebs!
by gfretwell
10/17/16 02:30 PM
New in the Gallery:
12.5A through 0.75mm˛ flex (just out of curiosity)
Shout Box

Top Posters (30 Days)
gfretwell 14
HotLine1 7
ghost307 7
renosteinke 6
Potseal 4
Who's Online
1 registered (ampherder), 281 Guests and 4 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#50436 - 04/01/05 06:35 PM main lug or breaker for Sub Panel?
Electric Ian Offline

Registered: 02/10/04
Posts: 132
Loc: MA, USA
I am installing a sub panel in an attic space to be finished. It will be fed from a 60A breaker in the main panel in the basement. Would you typically use a main lug panel or main breaker panel for the sub in this situation ?

Work Gear for Electricians and the Trades

Work Gear for Electricians and the Trades
Work Gear for Electricians and the Trades
Arc Flash Clothing, Gloves, KneePads, Tool Belts, Pouches, Tool Carriers, etc. etc....

#50437 - 04/01/05 08:03 PM Re: main lug or breaker for Sub Panel?
Dave55 Offline

Registered: 05/08/04
Posts: 666
Loc: Crystal Lake, Illinois, USA
I almost always use main breaker panels for sub-panels. I consider it an additional disconnect and haven't had any complaints from inspectors yet.


#50438 - 04/02/05 10:49 AM Re: main lug or breaker for Sub Panel?
Joey D Offline

Registered: 10/10/03
Posts: 263
Loc: Arlington MA U.S.
Most main breaker panels come with the neutral bar bonded to the ground bar or just have 2 neutral bars bonded together. This would need to be seperate in a sub panel use

#50439 - 04/02/05 12:05 PM Re: main lug or breaker for Sub Panel?
BobH Offline

Registered: 10/16/04
Posts: 134
Loc: Newfane, N.Y USA
You should be able to do it either way as long as grounded conductor is isolated from grounding conductor and you use a 4 wire feeder.

#50440 - 04/02/05 02:55 PM Re: main lug or breaker for Sub Panel?
northstar Offline

Registered: 03/10/05
Posts: 40
Loc: Long Island, New York
Im for the Main breaker panel with an Isolated nutreal bar. The added disconnect and protection could only be a good thing. However, the more economical way to go is the main lug which has an iso bar already in it.


ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals