Electrician Red Seal · Question
According to the Canadian Electrical Code, what is the maximum number of overcurrent devices (breakers or fuses) permitted in a single panelboard used as service equipment in a dwelling unit?
CEC Rule 14-606(1) states that a panelboard used as service equipment and containing overcurrent devices shall not contain more than 42 overcurrent devices. Eac
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Question: According to the Canadian Electrical Code, what is the maximum number of overcurrent devices (breakers or fuses) permitted in a single panelboard used as service equipment in a dwelling unit?
Answer options:
- 12
- 24 ✅ 42
- No limit, as long as the panelboard is rated for the service.
Correct answer: 42
Explanation: CEC Rule 14-606(1) states that a panelboard used as service equipment and containing overcurrent devices shall not contain more than 42 overcurrent devices. Each single-pole breaker counts as one, and a double-pole breaker counts as two for this calculation.
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