CSA CSA Electrical and Energy Standards 2 — Questions and Answers
Question 1: Which CSA standard applies to the safety of household electrical appliances in Canada?
- CSA C22.1
- CSA C22.2 No. 0
- CSA C22.2 No. 68 (Correct answer)
- CSA Z462
Correct answer: CSA C22.2 No. 68
CSA C22.2 No. 68 covers the safety requirements for motor-operated appliances, which are a major category of household electrical appliances.
Question 2: What is the significance of 'arc flash' in the context of CSA Z462?
- A routine spark during normal switch operation
- A sudden, violent release of energy from an electrical fault that produces intense heat and blast (Correct answer)
- A low-voltage static discharge
- A controlled discharge used in welding
Correct answer: A sudden, violent release of energy from an electrical fault that produces intense heat and blast
An arc flash is a dangerous release of energy caused by an electric arc, producing extreme heat, pressure waves, and shrapnel that can cause severe injury or death.
Question 3: Under CSA C22.1, which areas of a residential bathroom require GFCI protection for electrical receptacles?
- Only receptacles within 1 metre of the sink
- All receptacles within the bathroom (Correct answer)
- Only receptacles on exterior walls
- Only receptacles near the bathtub or shower
Correct answer: All receptacles within the bathroom
CSA C22.1 requires GFCI protection for all electrical receptacles located within a bathroom due to the presence of water and the risk of electrocution.
Question 4: What is a 'Qualified Electrical Worker' as defined under CSA Z462?
- Any person who can change light bulbs and fuses
- A person trained and knowledgeable in electrical hazards and authorized to perform specific electrical work (Correct answer)
- Only licensed master electricians
- Any employee who has completed a general safety orientation
Correct answer: A person trained and knowledgeable in electrical hazards and authorized to perform specific electrical work
Under CSA Z462, a Qualified Electrical Worker is someone with the training, knowledge, and skills to identify and avoid electrical hazards while performing assigned tasks.
Question 5: What does 'lockout/tagout' (LOTO) procedures refer to in the context of CSA Z460?
- Securing physical access doors to electrical rooms
- Procedures to isolate energy sources and prevent accidental re-energization during maintenance (Correct answer)
- Installing tamper-resistant locks on electrical panels
- Tagging equipment for routine inspection scheduling
Correct answer: Procedures to isolate energy sources and prevent accidental re-energization during maintenance
Lockout/tagout procedures under CSA Z460 are safety methods used to isolate equipment from energy sources and ensure they cannot be re-energized while maintenance or repair work is being performed.
Question 6: Which CSA standard governs the installation and safety requirements for photovoltaic (solar) systems in Canada?
- CSA Z462
- CSA C22.3 No. 9 (Correct answer)
- CSA C390
- CSA Z460
Correct answer: CSA C22.3 No. 9
CSA C22.3 No. 9 provides requirements for the interconnection of distributed resources, including photovoltaic systems, to the electrical utility grid.
CSA CSA Electrical and Energy Standards 2
Which CSA standard applies to the safety of household electrical appliances in Canada?