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Thread: 240 volt plug

  1. #1

    Default 240 volt plug

    i have a bobcat 225 the 240 volt rec is four wire. im hooking up my plasma cutter 240 volt the plug is 3 wire do i just not hook up the ground or is there a converter thanks

  2. #2
    Join Date
    Oct 2004
    Edmonton, Alberta


    Ya got 3 slots on the receptacle, outer 2 is what you want to use, bottom terminal is your electrical chassis ground.

  3. #3
    Join Date
    Dec 2007
    Los Angeles


    Miller sells the adapter cord

    Adapter Cord, Full KVA
    Field NEMA 14-50P to NEMA 6-50R. Adapts engine drive 120/240 V plug to common Millermatic and Spectrum 240 V plug.

    or you can make your own

    Pick up a 4-wire Range Replacement cord and a wall mount 6-50r

    You don't connect the white wire.
    Ed Conley
    Passport Plus w/Spool Gun
    Miller 125c Plasma 120v
    O/A set
    SO 2020 Bender
    You can call me Bacchus

  4. #4
    Join Date
    Jan 2007


    I think this is a good way to go.. Straight plug fits better in most engine drives. It would cost a bit more then the Range pig tail setup, but the straight plug more then makes up for that.. I have one on order now for my little engine drive. I do have a range cord angle setup for other things, but had to but mickey mouse around HD to get half the parts I needed.

    Weird, just got a e-mail right this moment saying the shipped my order.

  5. #5
    Join Date
    Aug 2008
    Orange, TX


    On the 4-prong 14-50, the top "U" shaped terminal is the chassis (safety) ground and the lower straight blade is the "Neutral" for 120V applications. Although the ground and neutral are bonded (connected) in the machine, to be technically and NEC correct, the neutral is never used as the safety ground.

    For a converter pigtail, the neutral white wire that Broccoli 1 mentions from the 4-prong 14-50P plug/cord doesn't get used as he stated on the 6-50R receptacle end that has only two hots and the safety ground.
    MM200 w/spot controller and Spoolmatic 1
    Syncrowave 180 SD
    Bobcat 225G Plus LPG/NG w/14-pin*
    *Homemade Suitcase Wire Feeder
    *WC-1S & Spoolmatic 1
    PakMaster 100XL
    Marquette "Star Jet" 21-110

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