Question

An electric heater is rated 2200 W at 220 V. The minimum rating of the fuse wire to be connected to the device is?

• A. 22 A
• B. 10 A
• C. 20 A
• D. 5A

Answer 1

Answer:

B. 10 A

• Using the formula P = VI

• Where P is power, V is voltage, and I is current

• We have: I = P/V = 2200 W / 220 V = 10 A

• Therefore, the minimum fuse rating should be 10 A to handle the current drawn by the heater.