If I had a 1500 watt (3000 peak) power inverter, how many amps could I consistantly pull? I have a mobile DJ system w/ lights that needs just under 20 amps peak. I need a power inverter for my car when I'm in locations (mountains) without power. Thanks for your help. cc
2006-12-28 16:30:10 · 2 answers · asked by Mr. C 3 in Consumer Electronics ➔ Other - Electronics
TV Guy is correct in the calculations, but no power inverter is 100% efficient. You should add 10% to the 12V (input) side to allow for a 90% efficient converter, making it about a 137.5 A @ 12VDC.
You'll need a hefty wire and hefty connectors to handle that current. It's about like having three sets of headlights on at the same time. If you expect to use the same battery to start your car, you won't be able to run it very long (try it in your neighborhood before you hit the mountains to see how long you have). You may want to consider a quiet generator system instead of a battery-based system.
2006-12-29 02:00:21 · answer #1 · answered by sd_ducksoup 6 · 0⤊ 0⤋
P = V * I
or I = P/V
For P=1,500 and V= 110, I=13.64 A
For P=1,500 and V=12 , I = 125A
2006-12-29 00:38:56 · answer #2 · answered by TV guy 7 · 0⤊ 1⤋