How should we wire the photoswitchs?

[Alan Anderson]

Originally Posted by JDM

The sensors have 22AWG wire, but they must be connected to a 20-amp circuit on the PDB. By the rules, this requires 18AWG wire. Is there an exemption somewhere I am missing?

If not, I will bring this to the Q&A later today.

There's no explicit exemption. Sensors and custom circuits are typically not given as much scrutiny by the inspectors as are motor and relay power circuits, so they usually pass inspection even though they don't strictly follow the wire gauge rules, but you're right to be concerned.

A couple of years ago we used a small-valued inline fuse on a power branch that was going to a single Banner sensor (very much like the photoswitches in the Kit this year). That practice is mentioned in the wiring rules for custom circuits.