Install Attic Fan Thermostat Switch
Place it so it s facing in the direction of the air that s being drawn out of the attic by the fan.
Install attic fan thermostat switch. Staple the cable within 8 inches of both the attic light box and the thermostat box. Run a 12 3 w ground from switch box to fan thermostat box. Leave enough cable at each end to work with. Start by screwing the thermostat switch to the plywood frame that houses the fan.
Make one of your wires from the 12 2 either red or black a direct power to your thermostat. Use the hammer and staples to secure the cable to the joists at 12 inch intervals. Step 1 secure the switch. Remove the cover of the thermostat to expose the black and white wires as well as the green ground screw.
The fan s thermostat is already mounted in a box that s attached to the fan by a flexible conduit. Screw this box to the plywood so it s in the direct path of the airflow step 11.