Miller Electric

Welding Discussion Forums

Home » Resources » Communities » Welding Discussion Forums
 
Miller Welding Discussion Forums - Powered by vBulletin

Page 1 of 2 12 LastLast
Results 1 to 10 of 16

Thread: extension cord

  1. #1
    Join Date
    Dec 2013
    Posts
    1

    Default extension cord

    I bought a Millermatic 211, the outlet in my garage is fed by 6 Guage wire,
    is it ok to use a 8/3 extension cord from 25' to 50'

    Thanks for any help

  2. #2
    Join Date
    Sep 2005
    Location
    16919 Pole Rd. Brethren, MI 49619
    Posts
    4,376

    Default

    Yes it is ok, you could use a 12 cord with that machine.

  3. #3
    Join Date
    Sep 2009
    Location
    Colorado
    Posts
    201

    Default Manual says 14ga OK

    The manual, on page 17, says that a 14 ga cord is adequate. Maximum length 53 feet. The maximum current rating is 25 amps.

    I figure that they must be taking into account the duty cycle of the welder, as a 25 amp load would usually require a 10 ga cord. This is all per the National Electrical Code, which has a welder exemption. Personally, I probably would use a heavier cord than 14ga.

    Richard



    Quote Originally Posted by tlhouston View Post
    I bought a Millermatic 211, the outlet in my garage is fed by 6 Guage wire,
    is it ok to use a 8/3 extension cord from 25' to 50'

    Thanks for any help

  4. #4
    Join Date
    Sep 2005
    Location
    16919 Pole Rd. Brethren, MI 49619
    Posts
    4,376

    Default

    The manual is for those fluent in code and nema. This machine may be ran on circuits to 50A provided the wire is a size bigger than the minimum,,,, with the 14 its 35A, with 12 or better 50A which is the plug comes on it. The unit has a 12 cord just to allow for it to use the larger circuit. It has its own thermal after the switch to protect it against overheat and for the finer wire within the unit. This will open before the unit will draw enough to overheat the incoming cord or even a 12 wire on a 50A.
    Last edited by Sberry; 12-06-2013 at 04:01 PM.

  5. #5
    Join Date
    Sep 2005
    Location
    16919 Pole Rd. Brethren, MI 49619
    Posts
    4,376

    Default

    The manual is terrible since this is marketed to a diy crowd, it should have lay language also and a recomentation above the code minimum which would get rid of confusion and no one thinks its a good idea to put this on a ******* 14 wire to a 50A recept.

  6. #6
    Join Date
    Feb 2012
    Location
    Wa
    Posts
    535

    Default

    I totally agree sberry. It's funny how many threads get started on here asking basically the same exact thing. Miller should just say to run 25' use x gauge, to run 50' use x gauge, etc.

  7. #7
    Join Date
    Sep 2012
    Location
    AZ
    Posts
    46

    Default

    Quote Originally Posted by raferguson View Post
    The manual, on page 17, says that a 14 ga cord is adequate. Maximum length 53 feet. The maximum current rating is 25 amps.

    I figure that they must be taking into account the duty cycle of the welder, as a 25 amp load would usually require a 10 ga cord. This is all per the National Electrical Code, which has a welder exemption. Personally, I probably would use a heavier cord than 14ga.

    Richard
    The resistance of 106' of 14g is .268 Ohms. The voltage drop at 25A is 6.7V.
    The power dissipated at 100% duty cycle is 167W. However, the MM duty cycle at 25A input current is 30%. So, in practice, the cord would dissipate 50.1W or about 1 W per foot. What d'ya know! Those Miller guys was right! Moral: When all else fails read the manual. When that fails follow the manual

  8. #8
    Join Date
    Oct 2006
    Location
    Illinois
    Posts
    596

    Default

    Yes, it is amazing how informative a manual is . Like instructions supplied with a product, when it doesn't fit or look like right, read the instructions.
    There are so many knowledgeable members here that they should be writing the manuals.

  9. #9
    Join Date
    Sep 2009
    Location
    South Carolina
    Posts
    570

    Default

    "When all else fails read the manual. When that fails follow the manual"

    LOL, I'll be using that for the rest of my life.

  10. #10
    Join Date
    Sep 2005
    Location
    16919 Pole Rd. Brethren, MI 49619
    Posts
    4,376

    Default

    The only problem with the manual in this case is that its not clear. It implies that this machine needs to be limited with a breaker of 35,,,, it does if,,,,, you use the minimum wire. Once you up the wire it can go on a common 50A welder circuit.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Warning: Non-static method PhpQuickProfiler::getMicroTime() should not be called statically in /mnt/stor3-wc1-dfw1/357822/357839/www.millerwelds.com/web/content/lib/pqp/classes/Console.php on line 77

Warning: Non-static method PhpQuickProfiler::getMicroTime() should not be called statically in /mnt/stor3-wc1-dfw1/357822/357839/www.millerwelds.com/web/content/lib/pqp/classes/Console.php on line 77

Warning: Non-static method PhpQuickProfiler::getMicroTime() should not be called statically in /mnt/stor3-wc1-dfw1/357822/357839/www.millerwelds.com/web/content/lib/pqp/classes/Console.php on line 77

Warning: Non-static method PhpQuickProfiler::getMicroTime() should not be called statically in /mnt/stor3-wc1-dfw1/357822/357839/www.millerwelds.com/web/content/lib/pqp/classes/Console.php on line 77

Warning: Non-static method PhpQuickProfiler::getMicroTime() should not be called statically in /mnt/stor3-wc1-dfw1/357822/357839/www.millerwelds.com/web/content/lib/pqp/classes/Console.php on line 77

Warning: Non-static method PhpQuickProfiler::getMicroTime() should not be called statically in /mnt/stor3-wc1-dfw1/357822/357839/www.millerwelds.com/web/content/lib/pqp/classes/Console.php on line 77

Warning: Non-static method PhpQuickProfiler::getMicroTime() should not be called statically in /mnt/stor3-wc1-dfw1/357822/357839/www.millerwelds.com/web/content/lib/pqp/classes/Console.php on line 77

Warning: Non-static method PhpQuickProfiler::getMicroTime() should not be called statically in /mnt/stor3-wc1-dfw1/357822/357839/www.millerwelds.com/web/content/lib/pqp/classes/Console.php on line 77

Warning: Function split() is deprecated in /mnt/stor3-wc1-dfw1/357822/357839/www.millerwelds.com/web/content/lib/footer.inc.php on line 62

Welding Projects

Special Offers: See the latest Miller deals and promotions.

Warning: Function split() is deprecated in /mnt/stor3-wc1-dfw1/357822/357839/www.millerwelds.com/web/content/lib/footer.inc.php on line 137