Announcement

Collapse
No announcement yet.

What size conductor for MM211?

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • What size conductor for MM211?

    I have a new MM211. What conductor AWG do I need to run 30ft. from 100 AMP service box, then flexible cord for another 70 feet? The manual says 230V, 14 AWG, is good for 53 feet but this is minimum, AWG minimum goes up for longer length. Thanks

  • #2
    What are primary amperage, input voltage and duty cycle at full output? How much potential for voltage loss supplying your 100 amp panel? What is the utility supply voltage?
    Dynasty 280DX
    Bobcat 250
    MM252
    Spool gun
    Twentieth Century 295
    Twentieth Century 295 AC
    Marquette spot welder
    Smith torches

    Comment


    • #3
      Page 18 of my manual: input voltage 230
      input amperes @ rated output 24.3

      Page 12 of my manual: 230 VAC Input 30% duty cycle @ 150 amps

      I have 150 ft. of # 2 AWG 3 conductor Aluminum running from house to shop

      Comment


      • #4
        This flexible cord is all you'll ever need.

        http://m.cyberweld.com/230voexco25.html

        But more than likely overkill. Great product though.
        sigpic

        Dynasty 200 DX
        Millermatic 350P
        30A Spoolgun
        Lincoln Pro Mig 140
        Hypertherm Powermax 30
        14" Rage Evolution dry saw
        40 ton press brake
        Evenheat Heat treat oven

        1x42 / 4x48 belt grinder

        Comment


        • #5
          Thanks for the link, gonna get the 50', Now I need to run at least 30 feet from my shop circuit box to where I want the outlet to be on the wall, do you know what size wire I need to do this with?

          Comment


          • #6
            What we used

            I wired my son's garage for my 211, which he will soon inherit, and did it like this. I started at the 200 amp service by installing a 40 amp double breaker. From it I ran 35 feet of 8 AWG to the wall outlet. I also bought a 25 foot 8 AWG extension cord so that along with the 211's power cord we can reach anywhere in the garage. I know what the Manuel says but there is no way on the face of this good green earth I'd run 14 AWG wire for anything with a power draw greater than 15 amps.

            Comment


            • #7
              8 should be fine, 6 would be better especially if you upgrade to a larger machine later.
              sigpic

              Dynasty 200 DX
              Millermatic 350P
              30A Spoolgun
              Lincoln Pro Mig 140
              Hypertherm Powermax 30
              14" Rage Evolution dry saw
              40 ton press brake
              Evenheat Heat treat oven

              1x42 / 4x48 belt grinder

              Comment


              • #8
                There are two things to consider; voltage loss being low enough that the welder performs well, and heat in the cable not being excessive.
                Your limited duty cycle will place you in a category where adequate voltage is your concern. Guessing you are being provided with 240 at the street, you can afford a loss of 10 volts. You haven't said how much or what size cable, or how much household load you can expect. You'll loose some voltage on the way to the house. Lets guess 2% or 4.8. You've got 5.2 volts to spare. Garage load other than welder must be known. Each leg of the power journey must be calculated.
                The formula is:
                KxIxLx2
                Ed
                K is resistance in ohms per mil foot, A piece of wire .001" diameter 1' long. Copper:12.9 Aluminum: 21.2
                I is amperage, Peak amperage is what you are concerned with, I.E. household, garage.
                L is length in feet.
                2 is because electricity must make a round trip.
                Divide the product by acceptable voltage loss

                Compare your result in units of cross sectional area in circular mills, with Table 8 Chapter 9 of NAEC #10--10380, #8--16510, #6--26240, #4--41740, #3--52620, #2--66360

                It is common to find larger sizes cost less.
                Dynasty 280DX
                Bobcat 250
                MM252
                Spool gun
                Twentieth Century 295
                Twentieth Century 295 AC
                Marquette spot welder
                Smith torches

                Comment


                • #9
                  There will be no other loads while I am welding. I have whatever the standard is going to the house from the power pole, 240V I guess, aluminum 3 conductor 2AWG running from the house to the shop approx. 150 feet with a 100 AMP breaker.

                  Comment


                  • #10
                    Originally posted by ja baudin View Post
                    8 should be fine, 6 would be better especially if you upgrade to a larger machine later.
                    Thanks, I think I'll take your recommend and go with 8 AWG. I don't do enough welding to up grade later. I'm just a hobbyist.

                    Comment


                    • #11
                      Another idea

                      Originally posted by ja baudin View Post
                      This flexible cord is all you'll ever need.

                      http://m.cyberweld.com/230voexco25.html

                      But more than likely overkill. Great product though.
                      I bought 2 of the 25' cords so I do not have so much cord on the ground to trip over on close jobs. Just a thought.

                      Comment

                      Working...
                      X