I don't know where to post this one, but i need help . If they used 10 amp bulbs, what was the total wattage of the lights uesd at Chelsea Football ground on Saturday ?
We need to know the voltage ( probably 230 volts).
At 230 volts (uk mains) it would be 230volts x 10amps = 2300 watts per lamp. Now you just need to multiply by the number of lamps used to get the total wattage.