I am looking at installing some LED lighting which requires a 12v DC 10 amp power supply. The question which I cant seem to find an answer for is this...
I live in the UK which uses a nominal 240 v AC mains power, so what would the power draw be on the power supply? ie. what would the input amperage be at 240 v AC ?
The reason I need to know, is that I don't want to overload the domestic lighting circuit in the house but I can't find any definitive answer to the above. I understand that there's a direct relationship between volts, amps and watts but is it transferable from AC to DC?
Am I right in thinking that the power supply would supply around 120 watts (12v x 10A) so that would infer that the supply would be 120w / 240v, around 0.5A plus a bit for losses?