GFCI operation question

Yea - it is to detect the arc, not protect people. AFCIs can have a 5 mA
ground fault trip and be used as both AFCI and GFCI. It would require 2
test buttons. Probably would see them if the code change below goes into
effect.

To PPS - I presume "upcoming" is the requirement to detect "series" arcs
starting 2008, not 30mA ground fault trip.

> BTW get used to AFCIs. They will be on all 120v 15 and 20a circuits

> in a dwelling in 2008 if the code goes as drafted. Comments are still

> open until October.

Considering the new AFCIs aren't on the market (or are they recently
out?), and it is only about 1.5 years for field experience until they
are required in 2008, it seems like requiring the new AFCIs in all
15/20A dwelling circuits is not a great idea (whatever the wisdom of
requiring the current AFCIs is). Bet there are plenty of comments on
that code change.

An interesting piece on AFCIs, including why normal breakers are
inadequate for arcs and arcs that shouldn't trip them is at:
http://www.cpsc.gov/volstd/afci/AFCIFireTechnology.pdf

bud--

Posted by Mark Lloyd on August 29, 2006, 2:20 pm

On Mon, 28 Aug 2006 23:05:55 -0400, gfretwell@aol.com wrote:

>On Mon, 28 Aug 2006 16:53:37 -0700, "Ook" <Ook Don't send me any

>freakin' spam at zootal dot com delete the Don't send me any freakin'

>spam> wrote:

>>What is "30ma ground fault protection"? It takes less then 30 mA to kill a

>>man.

>They call it Ground-Fault Protection of Equipment when it is at the

>30ma level.

>BTW get used to AFCIs. They will be on all 120v 15 and 20a circuits

>in a dwelling in 2008 if the code goes as drafted. Comments are still

>open until October.

Wouldn't that be all circuits in new construction?
--
Mark Lloyd
http://notstupid.laughingsquid.com

"Democracy is two wolves and a lamb voting on what
to have for lunch. Liberty is a well armed lamb
contesting the vote." - Benjamin Franklin

Posted by on August 29, 2006, 8:28 pm

On Tue, 29 Aug 2006 13:20:08 -0500, Mark Lloyd

>Wouldn't that be all circuits in new construction?

>--

>Mark Lloyd

Usually it would be all the 120v ones.

Posted by Mark Lloyd on August 29, 2006, 11:43 pm

On Tue, 29 Aug 2006 20:28:08 -0400, gfretwell@aol.com wrote:

>On Tue, 29 Aug 2006 13:20:08 -0500, Mark Lloyd

>>Wouldn't that be all circuits in new construction?

>>--

>>Mark Lloyd

>Usually it would be all the 120v ones.

There's no 240v AFCIs?
--
Mark Lloyd
http://notstupid.laughingsquid.com

"Democracy is two wolves and a lamb voting on what
to have for lunch. Liberty is a well armed lamb
contesting the vote." - Benjamin Franklin

Posted by on August 30, 2006, 1:08 am

On Tue, 29 Aug 2006 22:43:28 -0500, Mark Lloyd

>On Tue, 29 Aug 2006 20:28:08 -0400, gfretwell@aol.com wrote:

>>On Tue, 29 Aug 2006 13:20:08 -0500, Mark Lloyd

>>>Wouldn't that be all circuits in new construction?

>>>--

>>>Mark Lloyd

>>Usually it would be all the 120v ones.

>There's no 240v AFCIs?

I believe there may be 240v AFCIs but they are not mandated in the
code yet.

Page 3 of 11 < 1 2 3 > last >>

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