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OPERATIONAL TESTING
1. Before energizing utility power to the service, make sure the
main breaker is in the open (OFF) position.
2. Next, make sure all of the individual circuit breakers in both
the priority load center and in the non-priority sub-panel, are
in the OFF position. If the sub-panel has a primary breaker,
make sure it is in the OFF position as well.
3. Locate the yellow transfer handle, insert the metal end into the
slot for the transfer switch contactor assembly and move it
UP into the UTILITY position.
4. Next, insert the transfer handle into slot in the non-essential
load shed switch assembly and move the contactor DOWN
into the closed position.
NEVER OPERATE THE TRANSFER SWITCH MANUALLY WHEN
LOADS ARE CONNECTED.
5. With the main breaker OFF, energize the utility and check the
voltage at terminals N1 and N2 on the transfer contactor. If
utility voltage is not approximately 240 volts, de-energize
utility power and check all of the terminations between the
utility and N1 and N2.
6. Check line-to-neutral voltage on N1 and N2. If voltage is not
approximately 120 volts, de-energize utility power and check
all of the neutral terminations between the utility and N1 and
N2.
7. With all branch circuit breakers still OFF, close the main
breaker by switching it to the ON position.
8. Check line-to-line voltage on terminals T1 and T2. If line-to-
line voltage is not approximately 240 volts at any point in the
system, switch the main breaker OFF and check terminations.
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