Check the wiring to find the fault and repair or replace any cable or devices involved. If the breaker trips with all loads removed, then you have a short somewhere in the house wiring. and make sure all other lights are off or the bulbs are removed. To find the cause, remove all loads from the circuit. If a circuit breaker trips, the cause is either a short circuit or an overload. Splice the source ground wire to the ground wire running to the fan and a pigtail wire connected to the ground terminal on the switch and/or box. Splice the source neutral to the white wire running to the fan. Connect the other switch terminal to the black wire running to the fan. Connect the ground wire to the grounding terminal in the connection box and the ground wire from the fan, if there is one.Īt the switch box, connect the source hot wire to one terminal. In the box, splice the black cable wire to the black fan wire and the white to the white using wire nuts. Tighten the clamp snugly around the cable sheathing but don't pinch it. Put the wires through the clamp and pull them into the box leaving an inch of sheathing showing. Strip about 6 inches of cable sheathing off the wires at the fan end and remove about 3/4 inch insulation from the black and white wires. Open it, pop the plug out of one of the wire holes and thread a wire clamp into it. There will be a cover on the connection box that fastens with a small screw. These exhaust fans usually come with a small electrical connection box welded to the side of the housing. Diagram to Wire a Switch and Bathroom Exhaust Fan
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