Question

An electric oven of 2 kW power rating is operated in a domestic electric circuit (220V) that has a current rating of 5 A. That result do you expect? Explain.

Answer 1

The current drawn by this electric oven is 9 A whereas the fuse in the circuit is only 5 A capacity. When a high current of 9 A flows through the 5 A fuse, the fuse wire will get heated too much, melt and break the circuit. Therefore, when a 2 kW power rating electric oven is operated in a circuit having 5 A fuse, the fuse will blow off cutting off the power supply in this circuit.