AFCI Problem Has Me Stumped - Electrical - Page 3 - DIY Chatroom Home Improvement Forum


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

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Display Modes
Old 02-23-2011, 09:18 AM   #31
Electrician Canadian Eh!!
 
Join Date: Feb 2011
Location: Toronto,Canada
Posts: 28
Rewards Points: 25
Default

AFCI problem has me stumped


Good to hear you found the problem!!!

The AFCI is no different then a GFI breaker but with a different trip rating.
Two coils, one monitors current going out and one monitors current coming back. It trips when there is a difference above the trip point.

I learned ,shortly after they came out, a trick to ensure the neutral is not shared with another circuit or to ensure ground is not touching a neutral.
Simply reverse the hot and neutral on the AFCI breaker and turn on the breaker to see if it trips. If there is no problem then return it to the way it is suppose to be.

Advertisement

hhuggles is offline   Reply With Quote
Old 02-23-2011, 01:13 PM   #32
nap
You talking to me?
 
nap's Avatar
 
Join Date: Dec 2007
Location: sw mi
Posts: 5,407
Rewards Points: 2,000
Default

AFCI problem has me stumped


Quote:
WR_ECE;596328]
Problem was they shared a neutral at the other end, so effectively the hallway light's neutral reference was going through my master bedroom's AFCI (they were both on a single 2-phase wire). Quite a stupid move on the part of whatever electrician wired my house since it was a standard breaker for my lights. It was causing the false-trips (so you got it right nap).


Quote:
Only real choice I had was to put both circuits through the single AFCI without rewiring that entire circuit. Hopefully it will be ok, I am adding less than an amp to the overall power-draw from the receptacles in my MB. I'll have to get a different breaker for that circuit if they even make them.
what is the manuf and model of the panel? we can try to help with that.

or is there some way to separate the shared neutral? If it is a simple interconnection where both circuits went through a common junction box, you should be able to simple separate the neutrals at that point, obviously being sure the neutral for the circuit fed by the AFCI breaker continues on to the bedroom.
nap is offline   Reply With Quote
Old 02-23-2011, 01:25 PM   #33
Newbie
 
Join Date: Feb 2011
Posts: 6
Rewards Points: 10
Default

AFCI problem has me stumped


Quote:
Originally Posted by nap View Post
what is the manuf and model of the panel? we can try to help with that.

or is there some way to separate the shared neutral? If it is a simple interconnection where both circuits went through a common junction box, you should be able to simple separate the neutrals at that point, obviously being sure the neutral for the circuit fed by the AFCI breaker continues on to the bedroom.
The whole thing is Square D, don't know the specific model of the panel, I'll have to check.

As far as I can tell there is no junction box, but I did not actually go up in the attic/roof to check how the line is fed to those circuits.
WR_ECE is offline   Reply With Quote
Old 02-23-2011, 03:07 PM   #34
nap
You talking to me?
 
nap's Avatar
 
Join Date: Dec 2007
Location: sw mi
Posts: 5,407
Rewards Points: 2,000
Default

AFCI problem has me stumped


so far I'm not finding any 2 pole shared neutral breakers from Square D in any product line.

Advertisement

nap is offline   Reply With Quote
Reply


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
75 year chimney leak problem mstanleyg Building & Construction 10 03-30-2010 01:38 PM
AFCI circuit breaker bryan1282 Electrical 14 02-11-2010 07:06 PM
UPS & PC combo trip AFCI Keith Wheeler Electrical 12 12-10-2009 08:04 PM
Stymied by window leakage problem. Matth3w General DIY Discussions 5 06-11-2008 07:26 PM
Post-Tension Slab Problem Advice/Help Mike McBride Building & Construction 2 01-09-2007 02:51 PM




Top of Page | View New Posts