309A Canadian Electrical Code 4

Question 1

What does CEC Rule 10-204 require regarding the connection of the grounding electrode conductor?

Accepted Answer

It must be continuous without splice

Answer

CEC Rule 10-204 requires that the grounding electrode conductor be installed as a continuous conductor without splice to maintain a reliable, low-impedance path to earth.

Question 2

According to the CEC, what is the minimum insulation resistance that must be measured before energizing a new installation?

Accepted Answer

1 MΩ

Answer

The CEC requires a minimum insulation resistance of 1 MΩ measured between conductors and between each conductor and ground before a new electrical installation can be energized.

Question 3

Under the CEC, what is the demand factor applied to the first 5000 W of a residential electric range load?

Accepted Answer

100%

Answer

CEC Table 62 applies a 100% demand factor to the first 5000 W of a residential electric range, meaning the full load must be included in the service calculation.

Question 4

What minimum conductor size does the CEC require for a feeder supplying a dwelling unit with a calculated load of 100 A?

Accepted Answer

No. 3 AWG copper

Answer

According to CEC ampacity tables, No. 3 AWG copper conductor with 90°C rated insulation, corrected for a 75°C termination, can carry 100 A for a dwelling unit feeder.

Question 5

According to the CEC, how many branch circuits are required as a minimum for a dwelling unit kitchen?

Accepted Answer

2 circuits

Answer

CEC Rule 26-724 requires a minimum of two small appliance branch circuits to supply kitchen counter receptacles in a dwelling unit, ensuring adequate capacity for simultaneous appliance use.

Red Seal Electrician 309A Practice Test

Red Seal Electrician 309A Practice Test

309A Canadian Electrical Code 4