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For years Ive wanted an inverter in my work truck large enough to run a welding machine and I finally got one! I own a company that installs access control systems on security gates and doors, and have a small amount of welding to do on about half of the jobs I do. I used to carry a gas powered welder in the back of my work truck but lost that convenience when I bought the PM. I downsized to an inverter based DC welder that will run off of household current and that has worked wonderfully for about a year now, but it still draws a good bit of power and I have to be careful with it if I only have a 15 amp circuit to run it off of. I bought an AIMS 4000 watt pure sine inverter with a 20 second 12000 watt surge and this thing is BAD!! Ive got 4/0 cables to a 100 amp hr battery designed for electric cars, an ACR switch for automatic charging while the engines running, but isolates when engine is off. I have a manual battery switch on the dash to connect or disconnect the batteries together, giving me the ability to jump myself off with the inverter battery with the flip of a switch. An LCD screen is mounted at the back door of the van that has inverter controls on it, along with voltage and output gauges. Today I cranked up the welder all the way and burnt a couple rods, the output gauge never rose over 70%!! So this will definitely be all the power Ill ever need. It also has a built in charger so I can plug in at night if I havent driven far enough to fully charge the battery. The company highly recommends plugging in to shore power because the built in charger will do a much better job than the alternator.
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