Refrigeration & Air Conditioning Mechanic Red Seal · Question
According to Canadian electrical code, what is the maximum permissible overcurrent protection for a 20 amp branch circuit supplying a single motor?
For a single motor, the overcurrent protection can be sized up to 250% of the motor's full-load current, often allowing for a larger breaker than the circuit's
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Question: According to Canadian electrical code, what is the maximum permissible overcurrent protection for a 20 amp branch circuit supplying a single motor?
Answer options:
- 20 amps
- 25 amps ✅ 30 amps
- 40 amps
Correct answer: 30 amps
Explanation: For a single motor, the overcurrent protection can be sized up to 250% of the motor's full-load current, often allowing for a larger breaker than the circuit's wire rating for starting current.
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- Which of the following refrigerants is a hydrofluorocarbon (HFC) and has a high ozone depletion potential (ODP
- Which component is responsible for compressing the refrigerant vapour to a high pressure and temperature?
- According to the Canadian Electrical Code (CEC), what is the minimum required working clearance in front of el
- What is the main operating characteristic difference between a fixed orifice (capillary tube) and a Thermostat
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