I have a Husky 750 watt power inverter, can I buy an adaptor that will plug into an interior power outlet and or cigarette light vice hooking up to the batteries. I plan on powering a laptop, cell phone and DVD player while traveling.
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Re: Power hook up
This type of inverter has large alligator clips on it because the amperage that comes through a cigarette lighter is insufficient and can result in blown fuses and overheating of the socket. Hook this one up directly to the battery without splicing a longer wire to it.
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You didn't mention what make or model of inverter. Lets assume you are in the USA and your inverter has standard the US 15 Amp three pin 125V NEMA 5-15 AC outlets. based simply on that you would have a max of 125 x 15 = 1875 watts per outlet.
750 watts is pretty close to one HP. However, the pump will have a much higher current draw on start up which may be too high for the inverter. (The accurate number is 745.699872 Watts per Horsepower)
Discounting any losses, 750 watts from a 120 volt supply will draw 6.25 Amps. so 1/2 horsepower should draw 3.125 while running. Startup current may be much more. Check your pump for its current draw (should be printed on the pump) and check it against the inverter's limits. It may be that the inverter is too light for the pump.
Looking at this, how many amps does the pump normally draw? Take this and multiply by 3 for start up current draw. Now, multiply that by 120 (volts) and this will give you the watts. Start up current is what will knock your inverter down. It won't kill the inverter but it will overload it on startup and turn off the unit. Since I do not know the size of your pump, this is my caution. You could always try it, the most that should happen is that the inverter will shut down.
There are two possibilites: the first is the over 400W power draw, the other is how you have the inverter connected. Do you have the inverter connected directly to the battery terminals (the clips) not the outlet plug (cigaretter lighter)? This is needed for any load over 80W and under 400W. (the inverter can handle a load demand over the 400W limit but only for short periods (800W).)
What is the load that your PC pulls (Is it a laptop or a desktop)? The laptop in my home has either a 65W or a 90W load (depending on the battery and the AC adapter we are using). Desktops take much more power (usually).
In order to get 230 volts out of any 115 volt inverters you would need to be able to hook the outputs up in series with each other. If your inverters have outlets there is no way to do this other than completely dismantling both units and then I wouldn't advise it. As a licensed electrcian and electronics tech I've sometime done things like that but only as experiments or in emergencies.
If your units came with a power(+) and ground(-) you could then hook them up in series by fastening the (+) from one unit to the (-) of the other, then tape them to insulate them. You should then show 230 volts from the two leads still available. On the battery side you will still hook both postives(+) to the positive(+) and both ground(-) to the negative(-).
* Depending on the internal wiring of your units the above description may not work and could damage or even ruin your inverters.
* Although you may get 230 volts this way you will not have more power(watts,Amps) than listed for one unit and you may even have less.
* You need to also beware this could VOID any warantees and shorten the life of these units.
First...you need to find the amperage on the pump...your inverter is rated for 6.25 Amps...(750/120)...you will need an inverter bigger then the pump..I would suggest at least 1.5 times the size of the pump..bear in mind,..the inverter wasnt designed to start motors...so oversizing is needed..
Not a great solution but makes sense.
the ac adaptor for your alienware probably says input 240V ac 1.5Amps whilst the inverter can output 175W= 240V ac at 0.73Amps.
I am surprised it actually worked, i had to buy a 300W inverter to run my laptop. would suggest you do the same.
inverter is probably toast now anyway.
You are right. This is not enough to operate this freezer. You are going to need a bigger invertor it get it to work properly 900 or 1000 watt should be efficient even though it is not the best way to run the unit. If the unit has a problem you would be replacing the inverter all the time. Just FYI