Lighting · CEC Section 30 (Lighting Equipment)

Fixture Wattage Calculator

Calculate total wattage and current draw across a lighting circuit to ensure you don't overload dimmer switches or branch circuit breakers.

1. Fixture & Bulb Quantity

Number of Light Fixtures

Bulbs per Fixture

Bulb Type & Wattage

2. Circuit Draw Results

80% Dimmer & Breaker Rule

TOTAL CIRCUIT WATTAGE

720 Watts

CURRENT DRAW AT 120V

6.0 Amps

DIMMER SWITCH MINIMUM RATING

600W Standard Dimmer

Load Capacity Safe: Total load is well within standard 15A lighting circuit capacity (1440W max continuous).

CEC Section 30 Lighting Rules

CEC Rule 30-104 requires lighting branch circuits to be rated no more than 15A or 20A.
Replacing old 60W halogen or incandescent bulbs with 9W LED pods reduces circuit energy draw by 85%, freeing up capacity on older lighting runs.
LED dimmers require explicit LED/CFL compatibility (ELV or TRIAC rated) to prevent flickering and buzz.

Incandescent → LED equivalence

Match brightness (lumens), not watts.

Old incandescent	LED equivalent	Lumens
40 W	4–5 W	450 lm
60 W	8–9 W	800 lm
75 W	10–13 W	1,100 lm
100 W	14–17 W	1,600 lm
150 W	22–28 W	2,600 lm

On dimmers use LEDs rated dimmable and check the dimmer's minimum load — LEDs often sit below it, causing flicker.

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