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#48034 - 02/02/05 12:10 AM Arc Fault tester  
Northbayec  Offline
Member
Joined: Dec 2004
Posts: 27
San Rafael, CA U.S.A
I had a final inspection today and the city inspector was testing the arc-fault circuits. One of them was working properly while the other one was not tripping with his tester, yet it tripped with the test button. I was not present at the time so naturally he failed me. I arrived at the job 2 hours later and tested it with my tester (Ideal SureTest #61-056) and it worked fine. The braker is a SquareD homeline but I installed it in December and it is supposed to be a post-recall breaker - the test button is green which my supplier says is post recall. Is it possible that my tester is substandard to the inspectors tester? How does an arc-fault tester work exactly? Thanks in advance for any thought on this.

John


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#48035 - 02/02/05 01:46 AM Re: Arc Fault tester  
Bill Addiss  Offline
Member
Joined: Oct 2000
Posts: 3,878
NY, USA
John,

Here's another discussion on AFCIs and testers that might provide some insight:
https://www.electrical-contractor.net/ubb/Forum1/HTML/005058.html


#48036 - 02/02/05 06:14 PM Re: Arc Fault tester  
Electricmanscott  Offline
Member
Joined: Jan 2002
Posts: 1,457
Holden, MA USA
Don't get me started. Ugh!
Look here for more. http://www.mikeholt.com/codeforum/ultimatebb.php?ubb=get_topic;f=11;t=005775 If you need more help email me.

[This message has been edited by Electricmanscott (edited 02-02-2005).]


#48037 - 02/02/05 07:37 PM Re: Arc Fault tester  
Northbayec  Offline
Member
Joined: Dec 2004
Posts: 27
San Rafael, CA U.S.A
Thanks for the leads guys!

Bill - link was very helpful on understanding what makes these tester work.

Scott - followed your link to the other forum. Sounds like you had a hell of a time with that inspector over his meter. I'm hoping it goes better with this AHJ. He sounds reasonable enough in that he is willing to consider my meter as standard for the testing of this AFCI when he re-inspects tomorrow. It sounds as if the UL approved way of testing an AFCI is with the test button. You would think considering that quality AFCI testers cost at least $120.00 that they could have some standard of consistancy in these testers and the breakers themselves.

John


#48038 - 02/02/05 08:18 PM Re: Arc Fault tester  
Bill Addiss  Offline
Member
Joined: Oct 2000
Posts: 3,878
NY, USA
John,

Try to find out what type of tester he is using and maybe we can dig up some specs/info on it.

Bill


#48039 - 02/03/05 05:36 PM Re: Arc Fault tester  
Electricmanscott  Offline
Member
Joined: Jan 2002
Posts: 1,457
Holden, MA USA
I spoke to an engineer at UL today and he said there is nothing in writing anywhere that says the test button is the only way to test an AFCI breaker. What he did say is that it is the only effevtive way to test the breaker as it checks all the internal components to insure that they are working properly. The testers can not do what the button does so the button should be the test you use. If the button works the breaker works. That is the test that UL uses and endorses. Same can be said for the manufacturers.



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