ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Recent Posts
Chinese motors rated 220 v 50 hertz
by gfretwell - 07/23/24 04:45 PM
100 Definitions: Accessible 2023
by gfretwell - 07/23/24 10:12 AM
100 Definitions, Likely to Become Energized, 2023
by gfretwell - 07/23/24 10:08 AM
240V only in a home and NEC?
by emolatur - 07/18/24 01:05 PM
2023 CEU Course
by gfretwell - 07/17/24 01:08 AM
Recent Gallery Topics:
This is a new one
This is a new one
by timmp, September 24
Few pics I found
Few pics I found
by timmp, August 15
Who's Online Now
1 members (InspE), 437 guests, and 32 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Joined: Dec 2004
Posts: 2
rkidd Offline OP
Junior Member
I recently cited a double tap (two ungrounded conductors terminating on one 20A breaker) in a service panel as a code violation, but when challanged on it, I can not find it in either the 1999 or the 2002 NEC. I fell like an idiot. Can someone help me out here?

Horizontal Ad
Joined: Jan 2003
Posts: 4,391
110.3(B) or last sentence of 110.14(A)

Bob Badger
Construction & Maintenance Electrician
Joined: Mar 2001
Posts: 2,056

Before citing "double taps" be sure that the breaker is not designed for 2 terminations.
The double tap was commonly cited when I was doing real eatate work. However, some designs such as the "pressure plate" type of termination (Square D uses this) allow 2 conductors of the same size to be terminated on the breaker.

Joined: Feb 2004
Posts: 133
This is one of those things that a lot of people in the trade assume is always a code violation. Not necessarily. It is completly dependent on whether or not the circuit breaker is listed for one or two wire. Many 15 and 20Amp circuit breakers are in fact listed to accomodate 2 wires. Reference the link below from the web site of Mike Holt (who probably has more credability than me [Linked Image]

Joined: Dec 2004
Posts: 2
rkidd Offline OP
Junior Member
Thank you all for the speedy replys. With these three answers plus the ref. to the Mike Holt site, I get it. I was barking up the wrong tree thinking I would find something that would say only one branch circuit can be protected by one over current device. Thanks again. Ray


Link Copied to Clipboard

* * * * * * *
Tools for Electricians
Tools for Electricians
* * * * * * *

2023 National Electrical Code (NEC)
2023 NEC + Exam Prep Study Guides Now Available!

Member Spotlight
Berkley, MA
Posts: 144
Joined: March 2008
Top Posters(30 Days)
Popular Topics(Views)
323,575 Are you busy
247,890 Re: Forum
231,670 Need opinion
New Page 2
Powered by UBB.threads™ PHP Forum Software 7.7.5