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Leon[_7_] Leon[_7_] is offline
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Default Why use a contactor?

On 1/11/2014 10:57 PM, DaveC wrote:
Not likely.


??

It does not happen, or happens so rarely that it is deemed unnecessary
on 110 volt machines. It's an industrial safety feature to prevent
automatic start up after a power failure. Think multiple numbers of
machines in an industrial setting starting back up all on their own.

Additionally like your AC thermostat in your home the 220 volts going to
the condensing unit out side does not come near the person adjusting the
thermostat. You really don't want a 220 volt switch shorting or
electrocuting some one. Better that the switch be lower voltage.