On Mon, 6 Jul 2020 16:38:28 -0700 (PDT), trader_4
wrote:

On Monday, July 6, 2020 at 7:14:10 PM UTC-4, Scott Lurndal wrote:
writes:
Wiring up switch w/pilot light...

When wiring up a switch that requires another wire back from the load to attach to the switch to power the pilot-light (illuminated when ON).
Do I have to use #14 wire ?


Use the appropriate AWG for the breaker and length of run. On a 15A circuit, AWG14 is
the minimum AWG, it could be AWG12 for a long run.

For a switch pilot light? That would be one hell of a long run to need
12 gauge.



If the circuit is protected by a
20A breaker, AGW12 is the smallest size you can use.

The smallest "fixture wire" you can put on 15&20a circuits is 18ga.
That can only go to loads that are limited by design, like a luminaire
or an appliance. If you use smaller wire, you need supplemental O/C
protection. "Fixture wire" is also limited to the load end of a branch
circuit. If this is run with circuit conductors, it needs to be
compliant with 240.4(D), The old 15a =14ga, 20a=12ga rule