I'm about to begin the wiring process for my control panel, but I would like to know what wire guage should I use. Voltage is 120VAC. I know I"m going to need 10awg for my heating circuit which is a 1500w 120V heating element. Should I use the same for the coil of the contactor? The contactor is 120V 16A. Is their a chart or websit that I can utilize? The panel voltage will be 120V and 24VAC.