An electric device is rated 2000W; 250V. The correct fuse rating of the device is?

A. 9 A
B. 8 A
C. 6 A
D. 7 A

Correct Answer:

Option B – 8 A

Explanation

For the device rated 2000 W, 250 V, implies that current I, flowing is given by the relation
Power = IV
I = (power)/v = (200)/250
= 8A.
∴ the most suitable fuse for the device is 8A