GFI instead of isolation xmfr?

Discussion in 'General Electronics Chat' started by Rick A, Nov 15, 2012.

  1. Rick A

    Thread Starter Member

    Jul 30, 2010
    28
    1
    Hello, everyone; I'd like to ask a simple question: I ran across a design for a DIY battery desulfator that runs the mains power through a GFI outlet for user protection rather than an isolation xmfr. It seems like this would perform it's function, but my knowlege is limited so I'd like to get some opinions. Thank you.

    Rick A
     
  2. crutschow

    Expert

    Mar 14, 2008
    13,018
    3,235
    In theory that may work but you are depending upon an electronic circuit to save your life and that circuit is likely less reliable than an isolation xmfr. And even if it does save you life, you still will get a nasty shock. I know -- I've tripped one myself that was protecting a mains wire I accidentally touched. :rolleyes:
     
  3. Rick A

    Thread Starter Member

    Jul 30, 2010
    28
    1
    Crutschow:

    Those are two good points. That's why I asked- to get exposed to ideas I'd not thought of. You reminded me that recently I was cleaning an airless paint sprayer and water splashed onto the plug. I got a tingle from it and the GFI tripped. It worked as advertised but I've seen enough of them malfunction that I totally accept your reasoning. Thank you.

    Rick A
     
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