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Transfer Switch Sequence of Operations

 

When the normal power (utility) fails, the "Source 1 Available" light goes out. This begins the timing sequence to start the generator.

In the timer column, the "Re-transfer complete" light should still be on.

The generator should not be running. The transfer switch contactors connect the utility circuit to the load, but the utility is de-energized or the voltage is deficient.

These lights should be on:
 

Re-transfer complete
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