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  1. #1
    Join Date
    Mar 2007
    Location
    Carson City, Nevada
    Posts
    32

    Default MM251 and generator ?

    Is anybody using the MM251 off of a generator. I need to weld 1/4 aluminum plate. This on a deck of a boat. This is a one time job. I have a 12.9kw gen for this. I need to know as I have not bought the MM251 yet. Is there a different Mig welder that would work if the 251 does not.

    Kevin

  2. #2
    Join Date
    Oct 2006
    Location
    Cleveland, Ohio
    Posts
    38

    Default

    Why not rent an engine drive and a suitcase feeder for the "one time" job?

  3. #3
    Join Date
    Sep 2002
    Location
    Clark County, NV
    Posts
    2,696

    Default

    Where in NV are you?

  4. #4
    Join Date
    Feb 2007
    Location
    now in Orlando!!!!
    Posts
    559

    Default

    KKM, you should have plenty of juice with a 12K generator,the 251 manual calls for 42 amps at 230V so that should work out to around 7.5 KW . My manual on the MM 250 says 7.7 KW but is requires 44 amps at 230. Hope this helps,Paul
    More Spark Today Please

  5. #5
    Join Date
    Sep 2002
    Location
    Clark County, NV
    Posts
    2,696

    Default

    I don't think power is the issue. The MM251 is loaded with electronics and is likely to be very picky about clean generator power.

  6. #6
    Join Date
    Mar 2007
    Location
    Carson City, Nevada
    Posts
    32

    Default

    How clean the power needs to be is what I am worred about. Is there anybody out there using a 251 on a generator?

    Kevin

  7. #7
    Join Date
    Aug 2006
    Location
    Oklahoma City, Oklahoma
    Posts
    304

    Default

    you may want to just contact Miller engineering directly to get some specifics of input power quality requirements. They know that stuff inside and out and what it will tolerate and what will send it down the road. I know some of their gear is specifically designed to run on poor input power, but I don't know about the 251. Just from personal experience, I see so many people that over look the earth ground bonding for generators. This is a quick way to get rouge power crawling around your gear and making it act up or worse, burn up. SSS

  8. #8
    Join Date
    Oct 2006
    Posts
    642

    Default

    Quote Originally Posted by KKM View Post
    How clean the power needs to be is what I am worred about. Is there anybody out there using a 251 on a generator?

    Kevin

    I think you are smart to be concerned about quality of power.

    I was looking at the MM251 when I went to pick up my MM210 and the LWS rep said " ya mentioned running off a generator, if I were you I'd avoid the 251 and get the 210. "

    He mentioned concern for the various electronic circuits found in the 251 that were not in the 210.

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