shop vac no ground in plug?

Discussion in 'Electrical and Wiring' started by Jungle, Apr 16, 2014.

  1. Apr 16, 2014 #1

    Jungle

    Jungle

    Jungle

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    I was wondering if the shop vacs as are meant for wet and dry why do they have only 2 prongs on the plug? I thought the things close to water are suppose to have ground?
     
  2. Apr 16, 2014 #2

    Wuzzat?

    Wuzzat?

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    Doubly insulated.
    Apparently UL has signed off on this.
    I think between this method, grounding pins, GFCIs (UL spec 943) and common sense, as long as less than 2000 people die each year in the US no more resources should be devoted to this but
    http://www.nema.org/pages/default.aspx
    may think otherwise.
    IIRC, the US elec. code wants GFCIs in car washes even though there has never been an incident.

    A lot more lives could be saved by not having cigarettes.
     
    Last edited: Apr 16, 2014
  3. Apr 16, 2014 #3

    JoeD

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    If it is plastic vacuum like many of them, what exactly do you expect the ground pin to ground. It is only for exposed metal parts.
     
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  4. Apr 16, 2014 #4

    nealtw

    nealtw

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    With double insulated tools it is important that the plug has one knife blade bigger that the other. This to make sure the power is going in the right direction. Not rated for use in the rain so keep it dry.
    Power leaking to ground will still kick a gfci. In wet conditions with a saw or drill running the power that goes thru your hand and back to nuetral will not kick a gfci.:p
     
  5. Apr 16, 2014 #5

    Wuzzat?

    Wuzzat?

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    And current through your hand is much better than current through your chest unless you are getting defibrillated.
     
  6. Apr 16, 2014 #6

    nealtw

    nealtw

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    In that case you are sharing the power with the motor so I don't know how much you get but it is exciting.:confused:
     
  7. Apr 16, 2014 #7

    Wuzzat?

    Wuzzat?

    Wuzzat?

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    Well, that's one way to put it.
    Between this and waterboarding I think I'd choose the shock.

    If you can feel it it's >1 mA. I think the GFCI people have declared that 1/4 A is the most you can get with 120v but I lost that graph and hardly anyone gets this much.
     
    Last edited: Apr 16, 2014

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