contactor for change over supply
contactor for change over supply
(OP)
hi
if I have 2 supply power to a building.
one from the electric company and the other from generator for emergency ( loss power, fire for pump and etc)
the generator is located at building.
the contactor for the change over supply must be ac-3 or can be ac-1?
I have contactor that at ac-1 is take all the power but ac-3 is feet to les current
thanks
if I have 2 supply power to a building.
one from the electric company and the other from generator for emergency ( loss power, fire for pump and etc)
the generator is located at building.
the contactor for the change over supply must be ac-3 or can be ac-1?
I have contactor that at ac-1 is take all the power but ac-3 is feet to les current
thanks





RE: contactor for change over supply
You should be using a reversing contactor. It is dangerous to use transfer contactors without a mechanical interlock in addition to the electrical interlock.
Some manufacturers offer a mechanical interlock kit that may be field installed to provide mechanical interlocking between two contactors.
Bill
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"Why not the best?"
Jimmy Carter