From Light Fixture Replacement · Step 7 of 13 · Video by The Home Depot

Showing 0:33–1:17 of the source video.
Before any electrical work, always turn off the power to the circuit at the main electrical panel. Locate the breaker corresponding to the light fixture you're working on (e.g., 'Kitchen') and switch it to the 'off' position. Place a step ladder securely to reach the existing light fixture. Use a screwdriver to remove the screws holding the fixture canopy to the ceiling. Before touching any wires, use a voltage tester to ensure there is no active electrical current. Once confirmed safe, disconnect the existing light fixture's wires from the house wiring. Standard boxes typically have three sets of wires: black or red for current, white for neutral, and silver or copper for ground. Always disconnect the ground wire last. Finally, completely remove the old fixture from the ceiling.
Goal: Safely disconnect and remove the old light fixture
This project provides a step-by-step guide on how to safely replace an existing ceiling-mounted light fixture with a new one. It covers unboxing, safely disconnecting power, removing the old fixture, installing the new mounting bracket, wiring the new fixture, and finally assembling and testing the new light.
Once all wires are disconnected and the fixture is no longer supported by wiring, carefully lift the old fixture away from the electrical box. Lower it down the ladder or have someone assist in removing it from the work area.
This project involves safely removing an existing light fixture in a two-story stairwell and installing a new one. Due to the height and electrical work involved, safety precautions are paramount.
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