Importance of AFCI Indicators – Although there is a test button fixed to the circuit breaker, there is no testing function for arc faults within individual sections of the branch circuit. However, an AFCI indicator is different in that it can test individual receptacles found in the branch. In order to inspect receptacles,
How? – When learning of this topic, the most common response is ‘well, how do they work?’. Actually, it is very simple and it starts by connecting the AFCI indicator into the receptacle. With some models such as the Ideal #61-165, there are many testing functions.
For example, the indicator in question, around 8-12 pulses will be produced in just one second and the AFCI should recognise this as being dangerous. Furthermore, the indicator can run nuisance tripping tests which is the common problem of the AFCI opening a circuit with a shared neutral connection even when safe. In this test, it will create an arc that should not cause a trip in the AFCI at 300mA. In some of the newer models, they will boast a GFCI indicator too.
