Electrician Red Seal · Question
An electrician is installing a new 4-fixture luminaire in a dwelling unit hallway. The existing wall switch location is accessible, but there is no neutral conductor at the switch box. The luminaire requires a neutral for proper operation (e.g., smart lighting controls). What is the CEC requirement for providing a neutral conductor at the switch box for this new installation, assuming the hallway is not a bathroom, ensuite, or similar specific location?
Rule 4-070(1) of the CEC requires that for single-pole switches controlling lighting outlets, a neutral conductor must be provided at the switch box location. T
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Question: An electrician is installing a new 4-fixture luminaire in a dwelling unit hallway. The existing wall switch location is accessible, but there is no neutral conductor at the switch box. The luminaire requires a neutral for proper operation (e.g., smart lighting controls). What is the CEC requirement for providing a neutral conductor at the switch box for this new installation, assuming the hallway is not a bathroom, ensuite, or similar specific location?
Answer options:
- A neutral conductor is not required at the switch box if the luminaire can be controlled without it. ✅ A neutral conductor must be installed at the switch box, regardless of whether a smart switch is used.
- A neutral conductor is only required if a dimming or smart switch specifically requiring a neutral is installed.
- A neutral conductor is only required if the switch box serves multiple luminaires or receptacles.
Correct answer: A neutral conductor must be installed at the switch box, regardless of whether a smart switch is used.
Explanation: Rule 4-070(1) of the CEC requires that for single-pole switches controlling lighting outlets, a neutral conductor must be provided at the switch box location. This is to accommodate future installation of devices that require a neutral connection, such as smart switches or dimmers, even if the initially installed switch does not require one. This ensures future compatibility and avoids costly rewiring.
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