ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
Violation?
by renosteinke - 01/27/23 09:52 PM
Does NEC 551.71 (F) apply to dwellings?
by BigB - 01/20/23 10:46 AM
Power submeter connections
by HotLine1 - 01/19/23 09:09 AM
AFDD's coming to the UK
by Texas_Ranger - 01/17/23 07:22 PM
New in the Gallery:
Burger King crown sillyness
Burger King crown sillyness
by wa2ise, December 11
240/208 to a house
240/208 to a house
by wa2ise, October 9
Who's Online Now
0 members (), 27 guests, and 12 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Page 1 of 5 1 2 3 4 5
Joined: Nov 2000
Posts: 2,236
Likes: 1
Member
Arc-fault Circuit Interrupters

Got a few questions concerning this new technology...

How do they work?

How much will they cost?

Why does the NEC think that arcs only happen in bedroom receptacles? (Or realistically, why the requirement for bedrooms over any other part of the house?)

Why not protect every non-dedicated circuit with one? (probably cost prohibitive)

Should I start installing them in new dwellings now, or wait til 2002?


-Virgil
Residential/Commercial Inspector
5 Star Inspections
Member IAEI
Stay up to Code with the Latest NEC:


2020 NEC & Related Reference & Study Guides
2020 NEC & Related Reference & Study Guides
Pass Your Exam the FIRST TIME with these Exam Prep Combos:
 

>> Master Electrician Exam Prep     >> JourneyMan Electrician Exam Prep
 

Joined: Oct 2000
Posts: 5,392
S
Member
Hi 66' , i'd like to see a component schematic, like the gfi's. i have'nt found much on line as yet. My state (Vt) is stipulating installation this year 2001, on any new construction.

Joined: Dec 2000
Posts: 38
T
Member
In the july/augest 2000 issue of IAEI magazine there where two articles on afci's"Arc-Fault circuit interrupters"&"Arc Detection with the AFCI".You may be able to access them from their website.

Joined: Oct 2000
Posts: 4,081
Likes: 3
Member
I saw those articles also, and thought they were good. But I don't think they are available online. I will write the webmaster at IAEI.


Bill
Joined: Oct 2000
Posts: 5,392
S
Member
I wonder if they'd be good for those old knob& tube circuits that just won't go away?

Joined: Nov 2000
Posts: 13
V
Vin Offline
Member
I'm curious about how the local AHJ will be able to properly enforce this code.

If a couple with grown children decide to convert one of their three bedrooms into a den or office will the inspector approve of not having an arc fault in the office? Now let's say he does and a year later the couple put the house up for sale and still list it as a three family do they have to upgrade that "office"? If it got missed during the house inspection during the sale and three months later one of the new owners got electrocuted in the old "office" who would be liable?

Just a thought.

Joined: Oct 2000
Posts: 4,081
Likes: 3
Member
Vin,

That's a good point. I'm more curious to see what kind of problems develop with nuisance tripping of the AFCI. It is designed to open when arcing can cause a fire and is supposed to be able to tell the difference between a "good" arc (switch turning on) and a "bad" (dangerous) arc . We'll see ...

'66,
They probably only mention bedrooms as a minimum. I'm guessing that it's because they want to give you a little more protection in the place where you are sleeping. By the time a smoke alarm goes off it may be too late to get out of the room.


Bill
Joined: Nov 2000
Posts: 2,236
Likes: 1
Member
I finally got a decent explanation for the use in bedrooms, if you consider the widespread use of electric blankets...

I personally don't use E-blankets, so I didn't think of their hazards right away.

Any other ideas on why bedrooms circuits are more likely to arc?


-Virgil
Residential/Commercial Inspector
5 Star Inspections
Member IAEI
Joined: Jan 2001
Posts: 1,044
Tom Offline
Member
Cost will be about $40 to $50 wholesale.

I personally know of two fires in my area that could have been prevented by AFCI's. Both fires were in bedrooms, luckily, only moderate property damage was involved.


Few things are harder to put up with than the annoyance of a good example.
Joined: Oct 2000
Posts: 2,749
Member
Look here for information on the AFCI:
http://www.homesafetycentral.com/pdf/afci.pdf


Joe Tedesco, NEC Consultant
Page 1 of 5 1 2 3 4 5

Link Copied to Clipboard
Featured:

Tools for Electricians
Tools for Electricians
 

* * * * * * *
2023 National Electrical Code (NEC)
2023 NEC Now Available!
 
* * * * * * *

2020 Master Electrician Exam Preparation Combos
2020 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
Theelectrikid
Theelectrikid
Levittown, PA
Posts: 812
Joined: April 2004
Top Posters(30 Days)
BigB 4
triple 3
Popular Topics(Views)
302,866 Are you busy
232,026 Re: Forum
216,767 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5