309A Canadian Electrical Code 3

Question 1

Under the CEC, what is the minimum working space required in front of a 600 V panelboard?

Accepted Answer

1000 mm

Answer

CEC Rule 2-308 requires a minimum clear working space of 1000 mm (1 m) in front of electrical equipment rated up to 750 V to allow safe operation and maintenance.

Question 2

According to the CEC, what colour must the identified conductor (neutral) be in a standard AC power circuit?

Accepted Answer

White or grey

Answer

CEC Rule 4-028 requires that the identified (neutral) conductor be white or natural grey in colour throughout its entire length to distinguish it from ungrounded conductors.

Question 3

What is the maximum overcurrent protection permitted for a No. 14 AWG copper conductor according to the CEC?

Accepted Answer

15 A

Answer

CEC Table 13 limits the overcurrent protection for No. 14 AWG copper conductors to 15 A maximum, matching the standard residential lighting circuit breaker rating.

Question 4

According to CEC Rule 26-712, how many receptacles are required on a kitchen counter in a dwelling unit that has a continuous counter space of 1800 mm?

Accepted Answer

2 receptacles

Answer

CEC Rule 26-712 requires receptacles so that no point along the counter is more than 900 mm from a receptacle. For an 1800 mm counter, a minimum of 2 receptacles are required.

Question 5

What is the CEC requirement for tamper-resistant receptacles in dwelling units?

Accepted Answer

Required for all 15 A and 20 A receptacles

Answer

The CEC requires tamper-resistant receptacles for all 15 A and 20 A, 125 V receptacles in dwelling units to protect children from inserting objects into receptacle slots.

Red Seal Electrician 309A Practice Test

Red Seal Electrician 309A Practice Test

309A Canadian Electrical Code 3