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wiring this variac?

Discussion in 'General Electronics Discussion' started by Rob Hoff, Jun 26, 2014.

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  1. Rob Hoff

    Rob Hoff

    1
    0
    Jun 26, 2014
    [​IMG]
    it is a MASTECH 2KW VARIABLE TRANSFORMER
    i need it to vary some voltage for me :)
    please help
     
  2. KrisBlueNZ

    KrisBlueNZ Sadly passed away in 2015

    8,393
    1,269
    Nov 28, 2011
    It looks like you're supposed to put 115 VAC in on the black terminals (Phase at the top, Neutral at the bottom) and you get 0~250 VAC out of the red terminals (Phase at the top, Neutral at the bottom).

    Variacs aren't isolated. If you need isolation, use an isolating transformer before the variac.

    Good luck! Let us know how it goes.
     
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