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Author Topic: Which power inverter do i need????  (Read 447 times)


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Which power inverter do i need????
« on: April 26, 2019, 09:42:05 AM »
I have a Ford Transit van which has a secondary battery installed and is charged with a split charge relay. There is a power cable run to the rear to power an inverter. I want to run a Karcher power washer rated at 2100 Watts and a Karcher vacuum cleaner rated at 600 Watts at the same time. I really need some advice on which dual socket power inverter would be suited to do the job. I was first told that i need to add the watts together and times by 10%. I have also been told that because i want to run a power washer i need to times it by 2???
Is there a power inverter big enough for the job, if not can 2 inverters be run at the same time off the secondary battery or do i look for a bigger power source from a generator.
Any feed back would be a massive help


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Re: Which power inverter do i need????
« Reply #1 on: June 25, 2019, 11:34:44 AM »
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Re: Which power inverter do i need????
« Reply #2 on: June 25, 2019, 03:00:13 PM »

My apologies for the late reply!

Okay, first the formula, add the watts together, 2100+600=2700 (per hour), add 25% for inefficiencies  2700+675=3375 watts (per hour)

Multiply that by the maximum number of hours you would possibly run them.

It would be crazy to try this kind of a load on battery power, you need a generator.  Probably about a 5kw one should do.

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