We very seldom have a problem with the testers tripping the breaker and if the happens the breaker is replaced and trip with no problems.
We have been using the same testers on a subdivision and have finaled at least 30 homes with no problems. But for the last 8 homes the testers cannot trip the breakers AFCI circuit breakers being tested. We will use the same tester on another subdivision and other inspections and they trip the breakers without a problem.
We are advising the developer that the electrical contractor may have a bad lot of breakers. The superintendant does not want us to use the devices(of course not) and only use the test button on the breaker it self.
I have told them that the testers will be used until further notice.
Has any other jusistiction had any problem with the AFCI breakers or the testers. Any openions on what the problem may be?