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
Yesterday at 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
ghost307 7
HotLine1 7
renosteinke 6
Potseal 4
Who's Online
1 registered (Radar), 326 Guests and 4 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#91373 - 01/12/05 11:07 PM Sub Panels - limit?
aldav53 Offline

Registered: 08/22/01
Posts: 547
Loc: Chandler, AZ USA
I'm adding a 125a subpanel on a residential job that has 2 200a main breakers at the meter feeding to 200a panels. Will feed the 125a with # 2-4cond copper from one of the 200a panels. Wondered how many sub panels I could feed off one 200a panel? Could I by code feed another, say 30 or 60a off the 125 amp? If the loads were low is there a limit on how many breakers can be used coming from the 200a panel?
The Golden Rule - "The man with the gold makes the rule"

2014 / 2011 NEC & Related Books and Study Guides
#91374 - 01/13/05 03:45 AM Re: Sub Panels - limit?
HotLine1 Offline


Registered: 04/03/02
Posts: 6792
Loc: Brick, NJ USA
I am not aware of any NEC restrictions on a quantity of sub-panels, as long as your load calcs are OK.

'Limits' are mechanically set by the mfg.
Basically....if you have a 42 circ 'main' the most you could connect to it are 20 sub's (fed by 2-pole cb's)



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