A slightly different situation. Now I am looking at a 15A receptacle, but at 230V. I have no control transformer, everything is 230V...heaters, motors, control devices. I am being told to use 14AWG on everything. Here is my problem, the control relays I have supplied to me spring cage connection rated at 10A, and will only accept down to #16AWG. I can order the same relays with screw terminals and use down to 14AWG conductors. I have a large supply of spring cage connection Relays however, and would like to use them.
I will use screw terminals for the motors and heater circuit 14AWG conductors so they will be protected by the 15A supply breaker.
The rest of the components are control relays, SSR's, and timers. If I can consider these components "a control circuit tapped from the load side of a branch circuit short circuit and ground fault protective device" I can use NFPA79 7.2.4.2.2 I can safely use the 16AWG with the 15A OCPD, and use the spring cage relays.
I would like some input on whether or not I am declaring this control circuit correctly. Is it due diligence enough to say "this circuit is controlling a timer, this circuit is controlling a relay coil, there fore they are control circuits."
I do not consider heaters and motors inside my machine to be part of the control circuit. The control relays, timers, and ssr are all protected by the same 15A receptacle. Can I declare some items within this machine "control circuitry" and use 7.2.4.2.2, or does it all have to be considered a non control circuit.
Is everything from the OCPD protecting the conductors supplying the receptacle considered a branch circuit? Would any individual circuits whose load is a control relay or timer then be considered a tapped control circuit?