Double Lugged or Tapped Connections – July 17, 2015

Double Lugged or Tapped Connections – July 17, 2015

Double lugged or double-tapped breakers are among the most typical electrical defects we find during a standard home inspection.  Double lugging is defined as two or more wires installed in a breaker rated for one wire.  There are two instances where this commonly occurs; 1 on standard 120 or 240-volt breakers and 2. Less often on the main breaker.  Double-lugged main breakers are the most dangerous.  

Double lugged mains are a severe safety hazard. It usually involves adding a sub-panel supplied by a wire tied to the incoming service. Double lugged mains are a safety issue

Without the protection of a breaker or fuse, this is very dangerous. In the example to the right, what appears to be a #10 wire which generally would be protected by a 30 amp breaker, is tied directly to the utility service. It is not protected at all, and if the circuit develops a short, the #10 wire will overheat and cause a fire.  In addition, there are four wires in lugs only designed for one wire.

Double-lugged mains can easily be corrected by moving the wires for the sub-panel to an open space in the box and installing a properly sized breaker for the wire used.

How to correct a double lugged breaker

Some breakers, such as this “Square D Homeline” breaker on the

Double lugged breakers can sometimes be replaced with breakers that can accept 2 wires
This breaker is listed for two wires

 left, are listed to handle two wires at one time. Note the designation of “1 AlCu and 2 Cu” indicate you may install one aluminum wire or two copper wires. You may use two copper wires as long as each wire is sized correctly and positioned under the tension clip.  Unless your breakers are rated in this manner, you should not put more than one wire under the screw of the breaker.

If you have double-lugged breakers, you should employ the services of a qualified electrician.  An electrician may quickly correct this

Double lugged breakers can be replaced with rated tandem breakers
Tandem breaker

problem by using a pigtail to reduce the number of wires per

breaker.  Adding additional breakers or using a piggyback breaker if the panel is designed to accept piggyback or tandem breakers is a better alternative.

A qualified electrician for your safety should perform all electrical work,

For more information on our warranties 

Warranty

Check us out at the Better Business Bureauhttps://www.bbb.org/us/il/pocahontas/profile/home-inspection/hawley-home-inspections-llc-0734-310486659

 

 

 

 Happy Mother’s Day

May 6, 2021

Happy Mother’s Day

Leave a Reply

Your email address will not be published. Required fields are marked *

Book Your Home Inspection

Hawley Home Inspections LLC, offers home inspections backed by years of field experience. We carry General Liability, Work Comp and E&O insurance to protect our customers.

Serving the entire St Louis Metro Area and South Western Illinois since 2010.

Copyright © 2020 All Rights Reserved.

Call Now