309A Canadian Electrical Code

Question 1

According to the Canadian Electrical Code (CEC), what is the minimum height for receptacle outlets in a dwelling unit above the finished floor?

Accepted Answer

150 mm

Answer

The CEC specifies a minimum mounting height of 150 mm for receptacle outlets above the finished floor in dwelling units to ensure accessibility and safety.

Question 2

What section of the Canadian Electrical Code covers wiring methods for hazardous locations?

Accepted Answer

Section 18

Answer

Section 18 of the CEC deals specifically with hazardous locations, covering installation requirements for areas where flammable gases, vapours, or combustible dusts may be present.

Question 3

Under the CEC, what is the maximum number of conductors permitted in a single raceway before derating factors must be applied?

Accepted Answer

1 to 3 conductors

Answer

When more than 3 current-carrying conductors are installed in a single raceway, ampacity derating factors from Table 5C must be applied to account for mutual heating effects.

Question 4

According to CEC Rule 26-710, what type of receptacle is required in a bathroom within 1 m of a sink?

Accepted Answer

Ground fault circuit interrupter (GFCI) protected receptacle

Answer

CEC Rule 26-710 mandates GFCI protection for receptacles installed within 1.5 m of sinks and in bathrooms to protect against electric shock in wet locations.

Question 5

What is the minimum burial depth for direct-buried RW90 cable under a driveway according to the CEC?

Accepted Answer

600 mm

Answer

The CEC requires a minimum burial depth of 600 mm for direct-buried cables under driveways to protect them from damage caused by vehicle traffic.

Red Seal Electrician 309A Practice Test

Red Seal Electrician 309A Practice Test

309A Canadian Electrical Code