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#49070 - 02/26/05 10:59 AM hot arc fault breakers
cpal Offline
Member
Registered: 05/17/04
Posts: 162
Loc: Cohasset MA
Does any one have experience with AFCIs running hot to the touch in a load center , and not significantly loaded???


Charlie
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#49071 - 02/26/05 11:07 AM Re: hot arc fault breakers
Attic Rat Offline
Member
Registered: 12/14/03
Posts: 524
Loc: Bergen Co.,N.J. USA
... I've never had the pleasure,as NJ hasn't adopted that Code,..supposedly.I ask the electrical inspectors every time I encounter one(an inspector),and I'm told that they (AFCI's)haven't been adopted by the State.??? What gives??
Russ

[This message has been edited by Attic Rat (edited 02-26-2005).]
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.."if it ain't fixed,don't break it...call a Licensed Electrician"
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#49072 - 02/26/05 06:16 PM Re: hot arc fault breakers
gfretwell Offline


Member
Registered: 07/20/04
Posts: 9036
Loc: Estero,Fl,usa
My favorite builder says she has heard AFCIs run warm from her sparky
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#49073 - 02/27/05 02:59 AM Re: hot arc fault breakers
pdh Offline
Member
Registered: 01/20/05
Posts: 354
Look at this picture (PDF file):

http://www.eatonelectrical.com/unsecure/cms1/AFCI_CUTAWAY.PDF

There is a tiny circuit board in there, with a power supply to supply DC to the circuitry (probably SMPS). There's even a big resistor. It will use some power to do the line monitoring constantly, and dissipate heat in doing so. And it's rather tight in there, so it's hard for the heat to get out, hence a noticeable temperature rise will result (the heat is getting out through the molded case).
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#49074 - 02/27/05 03:06 AM Re: hot arc fault breakers
iwire Offline
Moderator
Registered: 01/05/03
Posts: 4391
Loc: North Attleboro, MA USA
I saw a statement from Siemens posted on an electrical forum that recommend not installing their arc fault breakers side by side as the heat from one effects the other.

It also suggested not running fans or vacuums from their AFCIs.
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Bob Badger
Construction & Maintenance Electrician
Massachusetts
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#49075 - 02/27/05 04:55 AM Re: hot arc fault breakers
walrus Offline
Member
Registered: 07/25/02
Posts: 680
Loc: Bangor Me. USA
Quote:
It also suggested not running fans or vacuums from their AFCIs.


lots of confidence in the quality of their product, eh?
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#49076 - 02/27/05 07:07 AM Re: hot arc fault breakers
cpal Offline
Member
Registered: 05/17/04
Posts: 162
Loc: Cohasset MA
Thanks for the information anything else will be appreciated

Charlie
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#49077 - 02/27/05 07:12 AM Re: hot arc fault breakers
Dave55 Offline
Member
Registered: 05/08/04
Posts: 697
Loc: Crystal Lake, Illinois, USA
I suspect that running motors on AFCIs can cause false tripping.

Dave
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#49078 - 02/27/05 09:27 AM Re: hot arc fault breakers
gfretwell Offline


Member
Registered: 07/20/04
Posts: 9036
Loc: Estero,Fl,usa
How do they suggest you vacuum the bedroom?
I guess a conscientious electrician would install a non-AFCI in the hall outside every bedroom door and hope the vacuum has a long enough cord to reach the back corner of the bedroom.
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Greg Fretwell
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#49079 - 02/27/05 06:14 PM Re: hot arc fault breakers
nesparky Offline
Member
Registered: 06/21/01
Posts: 642
Loc: omaha,ne
Nebraska also has not yet adopted the AFCI thank goodness.
A number of my service calls on newer houses have been caused by thier tripping. Out of over 40 calls I have found only one circuit problem. (HO added an outlet and did not hook up ground wire.) A new AFCI usually trips in a couple of days but placing a GFCI breaker in the AFCI's place has yet to trip.
I aam still of the opinion that, while the AFCI concept is a good idea, the products offered are expensive junk. Have had problems with all makes.
By the way the contractors who built these places do not seem to respond to service call requests very well. They almost always seem to wait until thier warrenty period is over then give the HO a bill for a service call and put in a new AFCI. At least 5 HO's have shown me thier billing for thier service calls with the notation that the new AFCI is NOT warrented.
Makes you wonder why they won't stand behind thier work.
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ed
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