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
Safety at heights?
by HotLine1
Yesterday at 08:51 PM
International Wire Colour Codes
by Texas_Ranger
Yesterday at 03:29 PM
Looking for older post
by Texas_Ranger
Yesterday at 03:22 PM
Last time to chat here
by Trumpy
01/20/17 11:41 PM
Unsafe Situations
by Trumpy
01/20/17 09:46 PM
New in the Gallery:
Desk-mounted "power-board"
Shout Box

Top Posters (30 Days)
Admin 35
HotLine1 21
Ruben Rocha 17
gfretwell 16
Trumpy 15
Who's Online
0 registered (), 66 Guests and 10 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#50137 - 03/23/05 07:35 PM Double Lug Feeder Wires to Avoid Double Taping the Breaker
JoeMed Offline
Member

Registered: 03/17/05
Posts: 16
Loc: Chino Valley Az. 86323
This installation has each phase double lugged to avoid double tapping the main service feeder breaker. From the service pedestal there is a 200amp service disconnect that feeds two 100amp panels, each is fed with 2/0 THHN (yes, a tad under) and both the 2/0 are lugged together one slightly longer to accommodate the breaker. To finish the installation, each of the wires go to a separate 100amp main breaker in a 100amp panel. Please advise was this an acceptable solution to this installation? Not my install. I have not seen this before.

Top
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....

#50138 - 03/24/05 05:48 AM Re: Double Lug Feeder Wires to Avoid Double Taping the Breaker
Attic Rat Offline
Member

Registered: 12/14/03
Posts: 530
Loc: Bergen Co.,N.J. USA
...Generally,(2)wires under one lug is a violation,unless that lug/breaker is listed for such..as far as I know,Square D,are the only breakers whose lugs are listed for (2)wires,..but 2/0?? how did they fit (2) of them under(1)lug?? sounds fishy to me...Good Luck!!
Russ

[This message has been edited by Attic Rat (edited 03-24-2005).]
_________________________
.."if it ain't fixed,don't break it...call a Licensed Electrician"

Top
#50139 - 03/24/05 06:24 AM Re: Double Lug Feeder Wires to Avoid Double Taping the Breaker
JBD Offline
Member

Registered: 07/12/01
Posts: 599
Loc: WI, USA
I am not aware of any "box" lug (the ones with a hole in them) that is rated for multiple conductors per hole. Lugs with "pressure pads" are often rated for two conductors.

Top
#50140 - 03/24/05 07:45 AM Re: Double Lug Feeder Wires to Avoid Double Taping the Breaker
renosteinke Offline
Cat Servant
Member

Registered: 01/22/05
Posts: 5305
Loc: Blue Collar Country
Any electrical supply house has, or can get, a variety of devices to make this sort of connection properly.
One type has openings for three wires.....use with a short pigtail from the breaker.
The other is a machined block with connections for two wires, and a solid 'tail' that is inserted into the breaker.

Top
#50141 - 03/24/05 07:53 AM Re: Double Lug Feeder Wires to Avoid Double Taping the Breaker
JoeMed Offline
Member

Registered: 03/17/05
Posts: 16
Loc: Chino Valley Az. 86323
thank you for the responses, I was n to clear on the lug. It is a double lug, with one wire in each lug, one wire longer to accommodate the breaker. Sound like it is not as bad as I thought?

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