AFCI Breaker Question - Electrical - DIY Chatroom Home Improvement Forum

Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Electrical


Thread Tools
Display Modes
Old 07-06-2009, 12:44 PM   #1
Join Date: Jul 2009
Posts: 1
Rewards Points: 10

AFCI breaker question

I just spent $3600 to have my old breaker box, which was mounted outside, replaced with a new one mounted inside my home. Now my (AFCI) breakers are constantly tripping, often 2 separate breakers from areas on different floors trip at exactly the same time. This happens several times an hour, or we can go a few hours without a trip. I don't know what to do, and I am regretting that I "upgraded". Any suggestions? Thanks, SM

The AFCI protection was added along with the new panel.

Last edited by Sheryl Martin; 07-06-2009 at 07:11 PM. Reason: clarification
Sheryl Martin is offline   Reply With Quote
Sponsored Links
Old 07-06-2009, 01:03 PM   #2
Chicago, IL
Michael Thomas's Avatar
Join Date: Jan 2008
Location: Chicago, IL
Posts: 1,037
Rewards Points: 500

Were these branch circuits previously AFCI protected, or was AFCI protection added along with the new panel?
Home Inspections, Infrared (Thermal Imaging) Leak Identification and Inspection Services, Roof, Attic, Building, Basement and Foundation Moisture Intrusion and Water Leak Inspections, Troubled Building Consultations - Serving Chicago and Suburbs
Michael Thomas is offline   Reply With Quote
Sponsored Links
Old 07-06-2009, 01:08 PM   #3
Journeyman Wireman
Join Date: Jun 2009
Location: Missouri
Posts: 90
Rewards Points: 75

Call the electrician back. Neutrals could be crossed.
jbberns is offline   Reply With Quote
Sponsored Links
Old 07-06-2009, 01:43 PM   #4
Join Date: Jul 2008
Location: NW of D.C.
Posts: 5,990
Rewards Points: 2,000

false tripping, or not

Reversed hot and neutral wires

Shared neutral wiring on single pole circuit breaker circuits: this is already an existing problem with GFCI's on multiwire branch circuits.

Incorrect or accidental connections between the ground and neutral wire:

A common source of accidental ground-neutral connections occurs when an electrician over-tightens the clamp connector on BX (armored cable) where it connects to a steel junction box.
We saw that his over-tightening the connector pinched inwards the edges of the BX cable. If the BX cable edge cuts into the hot wire the electrician discovers this fault immediately when power is restored to the circuit. But if the cable edge cuts into the neutral wire, the electrician does not discover this fault until a GFCI or an AFCI is installed on the circuit, or until someone touches a supposedly safe armored cable wire exterior and gets a shock.

Normal arcing in appliances: Nuisance tripping that could occur from the normal arcing that occurs in some appliances (such as a vacuum cleaner motor) has been considered in the design of the AFCI circuit. The AFCI is designed to tell the difference between this ordinary arcing and the type of arcing in a circuit that may cause a fire.

I guess there could also be a ground fault.

And one OP lived near a radio station and had to get filters from the AFCI manuf. for the thing to work properly.
Yoyizit is offline   Reply With Quote
Old 07-06-2009, 02:10 PM   #5
Join Date: Jan 2009
Location: South of Boston, MA
Posts: 17,248
Rewards Points: 2,000

Originally Posted by jbberns View Post
Call the electrician back.
Yup, call the guy back
Are these new or old AFCI ?
No problems before ?
What Mfg ?

I have 2 older lamps that the AFCI breakers do not like

Scuba_Dave is offline   Reply With Quote
Sponsored Links

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Sq D Trillaint Breaker problem jmreynol Electrical 3 04-28-2009 07:06 PM
Another AFCI Question Bocolo Electrical 17 03-23-2009 08:46 AM
Wire size and Breaker size for remodel ?? Skydmark1 Electrical 12 12-15-2007 05:00 PM
Problem with circuit breaker. HELP! spartanic Electrical 2 10-28-2007 03:09 PM
Main Breaker panel question stagger19 Electrical 5 08-15-2006 03:57 PM

Top of Page | View New Posts