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Physics, electricity, engineering

  1. Nov 29, 2012 #1
    Why do they use two different switches, one for the low voltage source and another for the high voltage source, to operate electric motors such as lift machines?
  2. jcsd
  3. Nov 29, 2012 #2


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    Staff: Mentor

    Welcome to PF!

    It is easier to flip a low voltage switch than a high voltage switch because they are physically smaller
  4. Nov 29, 2012 #3
    Thanks Russ.
    Does it also mean it is safer ?
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