It's possible that this question is too general to be asked here, but I'm pulling my hair out, so I'm hoping someone can shed some light on the subject.
I installed a Leviton Z-Wave switch in a 2-gang box, using a length of 14-gauge wire to connect into the three neutral wires in a wirenut in the box. The load wraps around the bottom red pole and daisy chains to the other switch. Seems weird, but that's how it was originally.
So I turn on the breaker, everything works fine. I'm a genius. Then, I turn the breaker off again, repack everything into the junction box, screw in the switch, and replace the switchplate.
Breaker on - light doesn't turn on anymore. All the other ones do, and I read current going through it with my voltmeter. So, I unpack everything, everything looks good, fiddle with some wires, turn it on again and nothing.
I put back the original switch and it works fine, so it's not the light. Is it possible I blew out the switch somehow? Is there something else I might be missing? I've replaced lots of switches, but this is the first time I've encountered a problem like this.