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  1. #1
    Join Date
    Sep 2009
    Location
    South Carolina
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    570

    Default 240v engine drive receptacle

    I just don't get it. The engine drive also has the four blade receptacle. I have not used that fourth blade in any configuration. What is it for and when would you need it?

    I am making extension cords for the 211 and dynasty, they don't use it so should I just ignore it on the engine drive also?
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  2. #2
    Join Date
    Nov 2012
    Location
    Northern Arizona
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    456

    Default

    Yep. Those are 14-50R and I made an adapter to go from 14-50 to 6-50. I have all my machines running a 6-50 on single phase 240v. Just find the two hots and the ground. The 4th is a neutral. If you run 4-wire SO cord you can make a little portable subpanel and break out a 115v circuit to run a grinder or something. I don't know about the code supporting that use, but who knows. 240v runs all the power through the hots and the ground wire is just there in case there is a ground fault. That way the electricity can go somewhere intentional.
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  3. #3
    Join Date
    Sep 2009
    Location
    South Carolina
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    Default

    "If you run 4-wire SO cord you can make a little portable subpanel and break out a 115v circuit to run a grinder or something."

    Ahhh, so that make's sense. Very good, thank you.

  4. #4
    Join Date
    Sep 2005
    Location
    northern NJ
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    1,831

    Default

    As I understand it the 4th lug is used as the common/white for a 115 circuit. It was put there due to the newer appliances needing a 115 circuit as well as a 240 circuit.

    Please correct me if I'm wrong on this.
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  5. #5
    Join Date
    Dec 2007
    Location
    Los Angeles
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    2,837

    Default

    You can make yer own adapter or buy one

    http://www.amazon.com/Hobart-770674-.../dp/B003J8NMF0


    Miller also has a version but more $


    the 14-50 receptacles also make feeding power to your house a lot easier
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  6. #6
    Join Date
    Nov 2012
    Location
    Northern Arizona
    Posts
    456

    Default

    Glad I could help. I cost me about $40 to make a 6ft conversion extension with 8ga. I had the the same day for abnout the same cost as oljne and no shiping. Whenever I take my welder to a new place with a different outlet I test the outlet and the make an adapter cord. It works well.
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  7. #7
    Join Date
    Feb 2012
    Posts
    225

    Default

    If you have a rv place close they have some good 50 amp adapters 4 to 3 prong .

  8. #8
    Join Date
    Dec 2007
    Location
    Los Angeles
    Posts
    2,837

    Default

    Quote Originally Posted by Kpack View Post
    If you have a rv place close they have some good 50 amp adapters 4 to 3 prong .
    Those usually only provide 120 power from the 14-50 receptacle because there isn't anything on an Rv that is 3 wire 240v.

    They us the adapters for rigs that are 30 amp 120v but want to or need to use a 14-50 receptacle
    Ed Conley
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  9. #9
    Join Date
    Feb 2012
    Posts
    225

    Default

    Yes I didn't think about that . I usually make up my own on the welder . I forgot those rvs are from 50 amp to 30amp 120 v .

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