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**Seerseraxlils** · 09-21-2012, 04:48 PM

watts are the amount of actual electricity used, amps are different at diff. voltages, but watts stay the same, 100 watts at 110 volts are about 1 amp where at 12 V they would 10 amps but still 100 watts at 220 it would be 1/2 amp. More volts, less amps..
so when you run an inverter you have to figure the watts used in 110 and then what you would be drawing off the bank. which would be 10x, and it is a lot cheaper and easier to find ac things than 12v things or here 220 things, I used 1/0 welding cables from the bank to the inverter to carry the heavy amperages.

these figures are close but off the top of my head. been a long time but I think watts / volts = amps. have to look that up I guess.

09-21-2012, 04:48 PM	#11
Seerseraxlils Join Date Jan 2006 Posts 562 Senior Member	watts are the amount of actual electricity used, amps are different at diff. voltages, but watts stay the same, 100 watts at 110 volts are about 1 amp where at 12 V they would 10 amps but still 100 watts at 220 it would be 1/2 amp. More volts, less amps.. so when you run an inverter you have to figure the watts used in 110 and then what you would be drawing off the bank. which would be 10x, and it is a lot cheaper and easier to find ac things than 12v things or here 220 things, I used 1/0 welding cables from the bank to the inverter to carry the heavy amperages. these figures are close but off the top of my head. been a long time but I think watts / volts = amps. have to look that up I guess.
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