Replace Light Fixture Junction Box

Push the box into the hole in the ceiling until the lip of the box is flush with the drywall.

Replace light fixture junction box.

Ceiling light boxes consist of metal or plastic boxes. We use an old work electrical box to replace a damaged or loose. To correct it add a box extender. Broken plastic electrical box swing clamp supports allowed the box to fall from the ceiling leaving the light fixture hanging by its electrical wires.

To replace an existing fixture first turn off electricity at the home s main electrical panel to the circuit that powers the light and its switch. Turn off the circuit breaker on the service panel for the light circuit being worked on. Once the box is in place install the crossbar that comes with the light fixture connect the wires and secure the fixture to the crossbar. Remove the old fixture.

If the junction box is recessed more than 1 4 in. Pull the electrical cable that s hanging from the ceiling through a knockout hole in the back of the box. Install a plastic old work ceiling junction box if your fixture weighs 10 pounds or less. Secure the base or canopy.

Before replacing a light fixture check your electrical circuit panel to locate the circuit. Unscrew the screws or nuts holding the fixture base to the ceiling box. From the surface of the wall or ceiling you ve got a code violation. Turn off the power.

Cover the switch with tape to make sure it doesn t get turned back on while you are working image 1. Remove the light bulbs from the fixture. This is common when a layer of drywall or wood was installed over the original ceiling. Attach the wires from the new fixture with wire nuts to the corresponding wires in the electrical box.

Repair a broken plastic electrical box mounted in a ceiling or wall this article describes how to repair a ceiling light fixture electrical box that was falling out of the ceiling. How to replace electrical box for ceiling light. Install a surface mount box remodel junction boxes aren t intended to use outdoors so if you want to install a spotlight on the porch screw a surface mount box to the siding.