Hello...and a quick question.
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  1. #1

    Hello...and a quick question.

    Hello. My name is Bob, and I'm new here. Just a piddling little welder, haha. I also had a quick question. I'm looking at an ESAB Multimaster 260, but in doing my research on it, the manual says that it needs a 90 amp breaker on it, even though it says plainly that it would peak at 52 amps at 230V. Is this true, or am I missing something? I've never heard of doubling amps for a breaker, and it doesn't make any sense to me, but I'm far and gone from being an expert on this. Thanks very much, all!

  2. #2
    Join Date
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    Re: Hello...and a quick question.

    Quote Originally Posted by Bob the Blacksmith View Post
    Hello. My name is Bob, and I'm new here. Just a piddling little welder, haha. I also had a quick question. I'm looking at an ESAB Multimaster 260, but in doing my research on it, the manual says that it needs a 90 amp breaker on it, even though it says plainly that it would peak at 52 amps at 230V. Is this true, or am I missing something? I've never heard of doubling amps for a breaker, and it doesn't make any sense to me, but I'm far and gone from being an expert on this. Thanks very much, all!
    Nice machine.

    pretty sure that should be a 60 amp breaker not 90

    maybe it's a misprint.
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  3. #3
    Join Date
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    Re: Hello...and a quick question.

    I just looked it up, and the manual does call for a 90 amp fuse for 208V and 230V.

    But if it's only drawing 52 amps, I would agree with JohnT that all you should need is a 60amp breaker.
    Just say, Know.

  4. #4
    Join Date
    Dec 2007
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    Re: Hello...and a quick question.

    The manual states 90amp Fuse, not a 90 amp CB.

    I don't know the equivalent CB to a 90amp fuse but the Circuit Breakers are usually smaller.
    Ed Conley
    http://www.screamingbroccoli.com/
    MM252
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  5. #5
    Join Date
    Dec 2007
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    Re: Hello...and a quick question.

    Miller has this in their manuals as they too list fuses in their electrical hook up section.

    *choose a circuit breaker with time-current curves comparable to the recommended fuse.
    Ed Conley
    http://www.screamingbroccoli.com/
    MM252
    MM211 (Sold)
    Passport Plus & Spool gun
    Lincoln SP135 Plus- (Gone to a good home)
    Miller 125c Plasma 120v
    SO 2020 bender
    Beer in the fridge

  6. #6

    Re: Hello...and a quick question.

    Ooh. I just read it as the same thing, haha. That does help to make more sense of the issue at hand. So, I'm assuming the "time-current curve" is in regards to time between a surge or something and the breaker tripping? You'll have to forgive me...I'm not electrically inclined.

  7. #7
    Join Date
    Dec 2007
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    7,510

    Re: Hello...and a quick question.

    Pretty much.

    Fuse can be fast acting, normal and slow blow.

    Your general CB is basically a slow blow and acts as you mentioned.

    The 60amp circuit breaker recommended in the other post will suffice.
    Ed Conley
    http://www.screamingbroccoli.com/
    MM252
    MM211 (Sold)
    Passport Plus & Spool gun
    Lincoln SP135 Plus- (Gone to a good home)
    Miller 125c Plasma 120v
    SO 2020 bender
    Beer in the fridge

  8. #8

    Re: Hello...and a quick question.

    Huh. Learn something new everyday, haha. Thanks you all so much for your help!

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