Battery power Answered
I am attempting to calculate my amp need for my garage in order to set up a 12v battery system. Using the formula; Watts / voltage = amps drawn, I have hit a question. If using a 12v battery system and converting to 110v, should I be using 12v or 110v in the formula?
Example; 100 watt light bulb / 110 volts = .91 amps. Nice!
But if I use the 12v; 100watt light / 12v = 8.3 amps.
I'm believing I would be drawing 8.3 amps from the battery to power this light.
Plus the converter draw...
Please tell me which is correct?