Installation
Fixture Installation Steps
Read this first
This article describes the shape of a like-for-like fixture swap so you can recognise the work and judge whether to do it. New circuits, added boxes, and any uncertainty about wiring are reasons to hire a licensed electrician. Permanent electrical work in Canada is governed by the Canadian Electrical Code and provincial rules.
Before you start
A straightforward swap means replacing one fixture with another of similar weight on existing wiring. Gather the new fixture and its instructions, a non-contact voltage tester, a screwdriver set, wire connectors of the correct size, and a stable ladder. Confirm the new fixture's weight is within what the existing box supports.
Step 1 — Cut the power at the breaker
Switching off the wall switch is not enough. Turn off the breaker that feeds the circuit, then hold a voltage tester near the existing conductors to confirm they are dead. Treat every wire as live until the tester confirms otherwise.
Step 2 — Remove the old fixture and inspect the box
Support the old fixture as you loosen it, then disconnect the conductors. Look at the box itself: it should be firmly anchored and, for ceiling units, rated to carry the load. Heavier fixtures and anything that will hold a fan need a fixture-rated or fan-rated box. If the box is loose or unsuitable, stop and bring in an electrician.
Step 3 — Connect the wiring
Most residential fixtures follow the same pattern: connect like to like and secure the grounding conductor to the fixture's ground point and the box where applicable.
- Join the supply and fixture conductors that serve the same function using the correct connectors.
- Make the grounding connection deliberately and check it is mechanically tight.
- Tug each connection gently to confirm it holds, then fold the wires neatly into the box.
ground => fixture ground + box
connections => tug test passes
Step 4 — Mount, restore power, and test
Fasten the fixture to the box according to its instructions, install the recommended bulb, and add any shade or diffuser. Restore power at the breaker and test the switch. The fixture should turn on and off cleanly with no flicker, buzzing, or warmth at the connections. If anything seems off, cut the power again and recheck.
When to call a licensed electrician
- The wiring colours or arrangement do not match the new fixture's instructions.
- You find aluminum wiring, scorching, or damaged insulation.
- The job requires a new circuit, a relocated box, or added switching.
- A permit or inspection is required for the work in your province.
Provincial electrical authorities and organisations such as the CSA Group publish guidance on certified products and safe practice. When in doubt, the safe path is to hire a qualified professional.