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Red Seal Electrician Practice Exam (Canada)

15 CEC-based practice questions for the Red Seal 309A Construction Electrician exam. Each answer links to the relevant Canadian Electrical Code rule.

Score: 0 / 0(0/15 answered)
  1. Ampacity & ConductorsQuestion 1 of 15

    Per CEC Table 2, what is the allowable ampacity of a 3-conductor #6 AWG copper RW90 cable in a raceway at 30 °C ambient?

  2. Continuous LoadsQuestion 2 of 15

    When sizing conductors and overcurrent devices for a continuous load, the calculated load must be multiplied by:

  3. Voltage DropQuestion 3 of 15

    What is the maximum allowable voltage drop from the supply to the point of utilization for a typical branch circuit and feeder combined?

  4. Bonding & GroundingQuestion 4 of 15

    What minimum size copper bonding conductor is required for equipment supplied by a 100 A overcurrent device?

  5. Conduit FillQuestion 5 of 15

    Per CEC Table 8, what is the maximum percent fill of a conduit containing four or more conductors?

  6. ReceptaclesQuestion 6 of 15

    In a dwelling unit, GFCI protection is required for receptacles installed within what distance of the inside walls of a bathtub or shower stall?

  7. Box FillQuestion 7 of 15

    When calculating box fill, each insulated conductor passing through the box without splice counts as:

  8. TransformersQuestion 8 of 15

    For a dry-type transformer rated more than 9 kVA, what is the maximum primary OCPD rating when no secondary protection is provided?

  9. MotorsQuestion 9 of 15

    Per CEC Rule 28-106, conductors supplying a single continuous-duty motor shall have an ampacity not less than:

  10. Service SizingQuestion 10 of 15

    What is the minimum service or feeder ampacity for a single dwelling with a floor area over 80 m² and electric range?

  11. AFCI ProtectionQuestion 11 of 15

    Branch circuits supplying receptacles in dwelling bedrooms must be protected by:

  12. Working SpaceQuestion 12 of 15

    The minimum headroom required in front of electrical equipment likely to require examination while energized is:

  13. Demand FactorsQuestion 13 of 15

    For a single dwelling, the demand factor applied to the basic load above 10 kW (rule 8-200) is:

  14. Outdoor ReceptaclesQuestion 14 of 15

    Outdoor receptacles in single dwellings must be:

  15. Conductor TerminationQuestion 15 of 15

    When equipment is marked for 75 °C terminations, conductor ampacity is based on the:

Heads up: Practice questions are for study only. Rule numbers and values are based on common Canadian Electrical Code editions and may differ in your provincial amendments. Always confirm against the current CEC and your provincial authority before relying on any answer.