[RobsPCing]

Originally Posted by gourdhedd

Connect a wire from one of the incoming 110v lines, route it through the switch (yes, just a regular light switch), through the contacts on the t-stat, and then to one of the coil contacts on the contactor. The other coil contact gets wired back to the neutral. Turn on the switch, set your temp, and the thermostat will cycle the contactor thus turning your elements on and off. This assumes that you have a 110v coil on your contactor.

Does it matter if its a 110 or 220 coil on it?