Replace Ceiling Electrical Box

The box shown has a slot that the cable slides through.

Replace ceiling electrical box. Deep octagonal or round ceiling boxes are quite large and overcrowding is rarely a problem. Number 10 x 1 5 sheet metal screws were used to secured the pancake box to the ceiling joist. Remove the old electrical box from the ceiling. Then pry the bar from the joists.

If the box has a cable clamp remove the locknut. 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. If it s suspended from a bar you may have to take off a metal plate to unscrew the box. Even so you should run through the calculations to be sure.

Broken plastic electrical box swing clamp supports allowed the box to fall from the ceiling leaving the light fixture hanging by its electrical wires. See the section on calculating box sizes. A square electrical box also known as a double gang box houses two devices. Disconnect the cable from the box.

Installing a ceiling fan chandelier or other heavy light fixture in an existing ceiling requires the right junction box j box. They ll have a combination outlet switch or a pair of outlets switches inside. Most ceiling boxes are large enough. Pry the tab and pull the cable out.

You also should replace a ceiling box if the existing one is loose or damaged. The finished replacement of an old style pancake ceiling electrical box ready for a standard light fixture the box above is ready for a standard light fixture installation. The round or octagonal box houses lightweight fixtures or safety devices in the ceiling. We use an old work electrical box to replace a damaged or loose.

If it s nailed to a joist pry it free with a flat bar. Ceiling light boxes consist of metal or plastic boxes. Pry out the box s mounting nails and pull the box down from the ceiling. How to replace electrical box for ceiling light.

If your light fixture pulls out from the ceiling chances are that the light box has cracked. The family handyman editor in chief gary wentz will show you how to remove an old light and install a ceiling fan brace so you can properly install a new c. Hold a 1 2 inch thick pancake box against the ceiling centered on a joist and trace around it with a pencil.