Leviton Arc-Fault tripping on LED lighting.

[ptonsparky]

You could buy two units of identical washers, yet they could sound different enough that you could tell which unit is running. What AFCIs look for is similar to "acoustic signature". If you were to pass one of the lines through a current transformer and feed the CT into a speaker, you would have an acoustic signature. That's what the AFCI is listening into.

And we would still not know if it was working correctly.

 

[Eddie702]

I installed a new Microwave over the stove and ran a new 12/2 dedicated circuit with an Eaton dual function breaker in my own condo. At first it tripped about 1 time a week. Then it would trip 1 time a month, then every 6 months. It went a year without tripping and theis spring it tripped a couple of time and now hasn't tripped in two months.

 

[hbiss]

Probably wearing out.

-Hal

 

[synchro]

... The problem is that though neither breaker is overloaded (RMS current), at some point both breakers trip according to the number of fixtures/ amount of load on Arc-Fault only. It usually happens on starting, for example, undercabinet lights.

I'm wondering if a dimmer like the Lutron MA-PRO was set to reverse-phase mode whether it could help prevent arc fault tripping on the more problematical LED lights. This dimmer's default fade-to-ON of 0.75 seconds might charge up the capacitors in such lights more gradually, and therefore reduce the peak current when the light is turned ON. Large peak currents with fast risetimes may be tripping the arc fault breakers, as mentioned earlier in this thread.