In the UK, domestic power is supplied at
240 Volts. A 100 Watt bulb will therefore draw a current of 100/
240 Amps (about 0.4A). This means a 1A fuse can be safely added to the mains plug of a desk lamp with a 100W bulb because 1A is much greater than 0.4A.Dec 23, 2017
read more >>