Electricity: Ceiling Fixtures

Installing a new light fixture is a great way to transform a drab room into a dazzling one. However, correct wiring and solid installation are critical. This page shows how to hang a fixture safely and securely.

Learn the temperature rating of your existing wires and verify your new light will be compatible. Many lights, especially ceiling-hugging fixtures, require connection to standard 90-degree C-rated wire. Wires installed before 1985 often don’t have insulation that can withstand this higher temperature.

Key Installation Steps

Avoid trouble by assembling and adjusting the mounting parts before you climb up the ladder. Also, if the new fixture has silver or gold lamp-cord wire, identify the neutral side by feeling for ridges, indentations or square edges; the hot wire will be smooth.

1. Turn off power and test all wires with a voltage detector to make sure the power is off. Disconnect the light fixture wires and remove the old fixture. Inspect and test the box for secure mounting.

2. Install fixture strap and threaded nipple. Lift fixture into position and thread fixture wires through threaded nipple. Attach fixture firmly to ceiling box.

3. Connect the wires after you identify the neutral fixture wire and hot fixture wire. Attach the ground wire around the ground screw and test the fixture before installing canopy.