Step 2Prepare your base
1. Cut the sheet material to give at least 3/16 inch clearance inside the box.
My box measures approximately 3.5 inch square, so the sheet is cut to 3.25 inch square.
2. Lay out the socket to center the bulb on the base, mark the flange mounting hole locations on the base, then pre-drill the base for the screw holes.
If you are using #4 screws, then pre-drill with 1/16th inch bit.
3. Trace the route for the wires, and cut a notch in the side of the sheet to suit the wires.
4. Lay out the ballast on the bottom side; you will probably have to shove it over to one side to make room for the wires. Be sure to consider the room required for the wire connectors. Again, transfer the flange mounting holes to the base, then pre-drill.
5. Install the socket and the ballast, then fold the wires into place.
6. Pre-drill the corners of the base for screws: #8 screws are pre-drilled with a 1/8th inch bit.
These screws serve as feet for the base, and ensure that the ballast does not come into contact with the plastic box.
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