# Thread: Power Inverter left plugged in?

1. I know inverters like mine, almost shut down when they have no load on it, it draws less than 1 amp, when the computer is off, so you could leave it turned on all the time if you don't leave the car for over a week at a time with-out being started, I don't think it would be a problem. But thats just my thoughts.

2. Originally Posted by Bugbyte
Watts does = Volts X Amps. How many volts does your system draw? Let's say 12. How many amps does your system draw? YOU DON'T KNOW. If it's 5, you'll consume 60 watts. If it's 10, you'll consume 120 watts.

No, you calculated how many amps your inverter could draw at maximum power. That has absolutely nothing to do with your computer.

You need to know how many amps each component in your system draws. Or use one of the POWER CALCULATORS to figure it out.
Thank you for clearing that up. One calculator rated my MAX draw at 122.8 watts, and that's with a few extra USB devices, and both HDs.
That's only 33% of the wattage on my inverter (at normal usage. It goes up to 1200 watts on a "peak" cycle). According to the webpage, it overestimates, and the "actual startup value" is 70% of the given. That's onl 21% of my inverter's output. Sorry. I'm just releived. I ws kind of worried my inverter wouldn't be able to handle any of this. Guess it can. :-D

I'm just working on getting a touchscreen, and setting up a better shutdown controller.

3. Good to hear! Using the watts = V X A, you've got 122.8 = 12 X A or 10.2 amps. Make sure you fuse the inverter to 15 amps and run the line directly to the battery to supply it.

4. Originally Posted by Bugbyte
Good to hear! Using the watts = V X A, you've got 122.8 = 12 X A or 10.2 amps. Make sure you fuse the inverter to 15 amps and run the line directly to the battery to supply it.
I plan on using this inverter for more than just the carptuer though. Should I put a 15 amp fuse on that particulair circuit? It ahs 2 outles. I am just "theoreticizing" here, but could I run one circuit with te car pc, with a 15amp fuse, and use a pwoerstrip for the other plug? For temporary electronics? IE, charging laptop, video camera, that kind of stuff?

I know the inverter I bought has an fuse built in also, but I'm gonna double check that when it comes in.

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