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12v power inverter and little 110v welder?

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  • #16
    Superred,

    A 5000w genset will run your MM175.

    Ask around to see if any parent has one- you will need to make a Pigtail cord to go from the MM175 Plug to the genset
    Ed Conley
    http://www.screamingbroccoli.net/
    MM252
    MM211
    Passport Plus w/Spool Gun
    TA185
    Miller 125c Plasma 120v
    O/A set
    SO 2020 Bender
    You can call me Bacchus

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    • #17
      Heck if he could use the MM175, there ain't NO doubt he could do that!!
      I'm not late...
      I'm just on Hawaiian Time

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      • #18
        Originally posted by enlpck View Post
        I'v never tried to run one from an inverter, but I'd be curious to know what happens if someone has. My suspicion is that there would be issues due to the initial surge on powerup, as well as due to waveshape, but I certainly wouldn't bet the house on it.

        I would, personally, use a generator. That I have done and it is the simplest method. For this job, you are real likely to be able to borrow one from public works/highway department, or the local equivelent. They may have trailer units or they may have them on the trucks, but they will most likely have them. Water/sewer department (if it exists) also a good bet. Emergency response or fire pretty much a gaurentee, as well. No cost but fuel, probably.
        I think that if the inverter was big enough it would probably work. I've been looking at them for my new work truck and am planning on getting at least a 3000w/6000w unit or a 5000w/10000w unit. I'm trying to find something I can hard wire outlets to. That said from all the info I have gotten you would need to run the motor at the same time to limit the battery depletion. Can't seem to find out how fast that would be, or how big the batts needs to be, ect.

        enlpck I'm game to try if you've got a 110v mig. Mine died years ago but I did run it from a 4400w gen set regularly. The gen seemed a little power lite on the max settings on the welder. PM me and I'll get in touch with you once I find and install the inverter. I see your in Jersey and I'm in Philly. Probably in 2 to 3 months as I want to make an informed choice and could use some cash flow.

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        • #19
          Just go check out an RV forum- plenty of folks are running Inverters and a bank 6v Batteries, Solar charging, Shore Power charging or Genset charger.
          Ed Conley
          http://www.screamingbroccoli.net/
          MM252
          MM211
          Passport Plus w/Spool Gun
          TA185
          Miller 125c Plasma 120v
          O/A set
          SO 2020 Bender
          You can call me Bacchus

          Comment


          • #20
            http://www.ccis.com/home/mnemeth/12volt/12volt.htm


            talks about different batteries etc etc
            Ed Conley
            http://www.screamingbroccoli.net/
            MM252
            MM211
            Passport Plus w/Spool Gun
            TA185
            Miller 125c Plasma 120v
            O/A set
            SO 2020 Bender
            You can call me Bacchus

            Comment


            • #21
              I have one in my pickup, the danger can be overheating the alternator and harness wiring. I only use it intermittently but used number 2 wire, used a disconnect and one of the black wires is a piece of 14 so wired to a gfci outlet on the front of the truck. The unit has 2 recepts, I usually reach down and plug it in if needed.
              I also hook a set of wires to 12V lugs for jumper cable hookup, this is handy and a saftey deal. I do it to most of our work trucks, this is a simple version in the lug pic.
              Attached Files
              Last edited by Sberry; 03-10-2008, 06:48 PM.

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              • #22
                Sberry We use forklift disconnect plugs for the same basic thing that you use the terninals for. Our jumpers are all set up with std clamps on one end and the male disconect on the other. I actually run mine thru the power cable that runs the plow motor. Same disconnect idea.

                I'm somewhat surprised by your comment on the alt. wire. I would think that it should handle that out put that the alt produces. I'll make a point on talking to they who rebuilds our alternators and sells us our batts. I've got a diesel with the heavy service alt. so I doubt I'll have to many problems. I figured to go a pair (2 hot 2 neut) of 1/0 or 4/0 welding leads to the front batts, but again I'm going to see what our guy builds and see what might work best.

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                • #23
                  Nice post... interesting !

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                  • #24
                    it doesnt seem like anyone actually tried it so i went outside and plugged my dynasty 200 into my 2000w inverter off my car. its only really 1000w with a 2000w peak but will just barely run a microwave. i tried a 1/16 6013 at 35 amps and it wont even run that.

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                    • #25
                      I tried it last summer. I have a Coleman inverter, rated 2000W with 4000W peak. I was using my Maxstar 150.
                      I couldn't even strike an arc, the power inverter shut down as soon as the stick touched the steel.
                      I had to load up my 5500 watt generator and take it to the job, it doesn't flinch at the little Maxstar.
                      I would like to rent an inverter, if that was possible, to see how small of one I could get away with buying. After my experience, I would start with a 5000W/ 10,000W surge unit.

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                      • #26
                        Once ya get pwr out to it, welding it should not be a problem. Like someone mentioned, there are few thick pieces of steel on containers. Their strength comes from the courogated walls and lift stacks(the only fairly thick part of it). I used to weld on em quite a bit repairing leaks, usually with stick metal though off a little generator/welder

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                        • #27
                          Army contact trucks run a 2500W inverter to run a 200 amp inverter based CC/CV machine. It works fairly well with a extra set of batteries for the inverter to keep from killing the truck if you let out magic smoke on system.
                          Joe
                          wrench3047@gmail.com

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                          • #28
                            I tried it last summer. I have a Coleman inverter, rated 2000W with 4000W peak. I was using my Maxstar 150.
                            Yes, I must have the same inverter, I had 3 new batteries, hooked them all together and it barely strike an arc. I would like to do some more looking, would be handy to be able to burn a couple rods from the pickup.

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                            • #29
                              I cannot see any productive welding from batteries alone that would weigh less than a generator. Even large truck batteries are in the 120 amp-hour range for a 20 hour discharge. Which for that 120 amp-hour battery is a 6 amp load. Boost the discharge to 60 amp load and you are looking at a 50 amp-hour battery due to a quirk called Peukert's Law.

                              You might be able to tack a few times before the batteries are discharged. Rent a generator.

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