ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals

ECN Shout Chat
Top Posters(30 Days)
Admin 19
Recent Posts
fuse rejectors
by NORCAL. 03/29/17 01:44 AM
Old decora style outlets
by NORCAL. 03/29/17 01:41 AM
NFPA stuff
by gfretwell. 03/28/17 08:08 PM
Anyone hiring inspectors?
by HotLine1. 03/27/17 08:03 AM
ESA Arc flash course
by TheShockDoctors. 03/24/17 10:15 AM
New in the Gallery:
SE cable question
Popular Topics(Views)
231,792 Are you busy
166,688 Re: Forum
160,829 Need opinion
Who's Online Now
0 registered members (), 73 guests, and 14 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#83757 - 02/20/03 02:58 AM AFCI breakers  
Anonymous
Unregistered

I put 2-15A AFCI breakers in a panel yesterday. What exactlly is the reason for only useing them on bedroom circuits? Is this a fire safety reason? and how are they different than a regular breaker? I guess a regular breaker would not trip if an arc was produced. Thanks.


2017 / 2014 NEC & Related Books and Study Guides

#83758 - 02/20/03 08:08 AM Re: AFCI breakers  
sparky  Offline
Member
Joined: Oct 2000
Posts: 5,303
WildTurkey101,
do a search on this BB for 'AFCI', the debate is ongoing, and probably will be for some time....


#83759 - 02/20/03 09:09 AM Re: AFCI breakers  
Len_B  Offline
Member
Joined: Jan 2003
Posts: 53
New Hampshire
WildT,

They work by electronically picking up the "arc signature" (voltage/current distortions). I think the "bedroom only" requirement comes from the unique nature of the "occupancy". i.e. for approx 16 hours a day the rooms are not occupied or "supervised", and when they are occupied the occupants are usually unconscious (I have a very boring life -- what a great set-up line though...). During the debate over requiring AFCI's, there were loads of stories about drapes, bedding, etc. hanging in front of receptacles, and catching on fire. Many electrical experts were sharply divided over whether they: worked as advertised; should be required; should be feed through device types vs breaker types, etc. My personal opinion is that they were shoved down the consumers throat by the insurance and manufacturing industries, who had everything to gain and nothing to lose. My personal rant on the subject can be read at the following thread: http://www.mikeholt.com/forum/Forum1/HTML/005799.html (Len Bonosevich)

Some links to info: http://www.ecmweb.com/ar/electric_basics_arcfault_protection/ http://www.zlan.com/arc.htm http://www.ul.com/auth/tca/fall02/Print/Print3.pdf http://www.ul.com/regulators/afci/AFCI_scenarios020502.pdf http://www.arcfault.org/index.htm

Len

edit: spellin'

[This message has been edited by Len_B (edited 02-20-2003).]


#83760 - 02/20/03 01:46 PM Re: AFCI breakers  
cubby964  Offline
Member
Joined: Oct 2002
Posts: 67
USA
Len:
Nice rant, I'm with you 100%. I would like to look back at this situation in about 10 years, and see what difference these really make.
The fact that these things we have now (breakers) only protect against permanent wiring defects and not what 'holly homeowner' plugs in has really got "me undies in a bunch"
Jim


#83761 - 02/21/03 05:14 AM Re: AFCI breakers  
sparky  Offline
Member
Joined: Oct 2000
Posts: 5,303
have you noticed the trade mag articles gaining clarity on specific's that were avoided a year ago?

manipulative bas****s...


#83762 - 02/22/03 12:46 AM Re: AFCI breakers  
Len_B  Offline
Member
Joined: Jan 2003
Posts: 53
New Hampshire
The prime focus of trade magazines is making money selling magazines and selling advertising(not necessarily in that order). The freebie zines make it by selling advertising only.
The fact that they may provide competent technical information from "experts" is secondary, and only necessary as far as it supports the prime focus.

Quote: "...and this surprises you?"



Member Spotlight
electure
electure
Fullerton, CA USA
Posts: 4,259
Joined: December 2000
Show All Member Profiles 
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.013s Queries: 14 (0.003s) Memory: 0.7734 MB (Peak: 0.9173 MB) Zlib enabled. Server Time: 2017-03-30 00:52:56 UTC