It's 3000 divided by 120 volts, not 12 volts. That is why it's called a inverter. It turns direct current into the more efficent alternating current. If it were drawing 250 amps of direct current out of a battery, it would explode fairly quickly.BerettaRacer wrote: ↑Sun Jan 06, 2019 8:48 pmlilwoody wrote: ↑Sun Jan 06, 2019 6:33 pmMight want to check that math again. 3000 watt DC to AC innverter will put out 25 peak amps and 16 continous. Depending on the inverter it will draw about 5% more amphs from the source but thats about it. At a reasonable draw a 800 amp battery will run one long enough for a hurricane to pass and you can get your generator hooked up. I've kind of done this, several times over the last 25 years.BerettaRacer wrote: ↑Fri Jan 04, 2019 1:02 pm 3000W @ 12V is a serious 250 Amps!! Your alternator is maybe putting out 100 A for short duration, more like 50 A continuous. You start pulling 250 A on a regular basis and your going to have some equipment, as in battery, alternator & wiring doing some complaining, and failures! System is just not designed to more that kind of amps on regular basis.
Sorry, your wrong. Might want to check that math again. Look at the post below yours.
3000W output divided by 12V = 250A input
DC to AC power inverters for pickup truck
too many people trying to sound smart all at once
- Slartibartfast
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it's the actual load (watts) divided by 12, not 120
here's a small microwave pulling almost 100 amps
[youtube]Dv9xL33j0iU[/youtube]
A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools !
He's running power tools, not the Flux Capacitor.
Harbor Freight. 4kw $340
Throw it in the bed and be done with it.
Harbor Freight. 4kw $340
Throw it in the bed and be done with it.