Depends on how much the current is. Current multiplied by voltage = wattage. So if you had a 240 watt device using 240v the current would be 1 amp. A 960 watt device would be 4 amps.
A 100 Watt light bulb from Nella Park should give you about 2000 hours -- if they still make them. A 100 Watt light bulb from overseas, I rather not say.