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Plug Types |
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Now let's start with the polarized plug, the one with the
two different sized flat prongs. It is called "polarized"
because it always observes the polarity. That is, it will
always correctly align the "hot" wire in the appliance
with the "hot" wire in the wall outlet. It does the same
with the common. The large prong plugs into the common,
the small is the "hot". The three prong plug is a
polarized plug with one additional prong. The round prong
is the ground wire. |
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