Refrigeration & Air Conditioning Mechanic Red Seal · Question
A 240-volt single-phase electric resistance heater rated at 5.0 kW (kilowatts) is installed in a workshop. What is the approximate current draw (amperes) when the heater is operating at full capacity?
To calculate the current draw, use the formula P = V × I, where P is power (watts), V is voltage, and I is current (amperes). So, I = P / V = 5000 W / 240 V ≈ 2
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Question: A 240-volt single-phase electric resistance heater rated at 5.0 kW (kilowatts) is installed in a workshop. What is the approximate current draw (amperes) when the heater is operating at full capacity?
Answer options: ✅ 20.8 A
- 12.0 A
- 2.0 A
- 41.6 A
Correct answer: 20.8 A
Explanation: To calculate the current draw, use the formula P = V × I, where P is power (watts), V is voltage, and I is current (amperes). So, I = P / V = 5000 W / 240 V ≈ 20.8 A.
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- Which component is responsible for compressing the refrigerant vapour to a high pressure and temperature?
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