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
International Wire Colour Codes
by Tjia1981
10/23/16 12:08 PM
Parking lot pole light swap....
by HotLine1
10/23/16 09:39 AM
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 12
HotLine1 7
renosteinke 6
ghost307 5
Potseal 4
Who's Online
1 registered (Tjia1981), 194 Guests and 4 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#206016 - 05/10/12 09:16 AM Main lug panels
sparkync Offline

Registered: 10/17/02
Posts: 811
Loc: NC
Wonder if someone can refresh me on the code for main lug only panels? As long as I have a Main breaker in the "Service Equipment" outside at the meter, can I use a Main lug panel for the interior panel?? Thanks, Steve

2014 / 2011 NEC & Related Books and Study Guides
#206017 - 05/10/12 11:08 AM Re: Main lug panels [Re: sparkync]
gfretwell Offline


Registered: 07/20/04
Posts: 9024
Loc: Estero,Fl,usa
The short answer is yes you can use a MLO if the disconnect is inside or outside the building served. 225.32 & 230.71(A)(1)

There used to be an extra fly in the pudding when we had "lighting and appliance" panelboards but that went away a cycle ago.
Greg Fretwell

#206018 - 05/10/12 11:15 AM Re: Main lug panels [Re: gfretwell]
sparkync Offline

Registered: 10/17/02
Posts: 811
Loc: NC
Thanks Greg. That's what I thought, but didn't remember the code reference. For the homeowner's convenience, I usually go ahead and install one with a main breaker anyway, but on a job I'm fixing to do, the main lug panel will probably be better, and always a little cheaper:)


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