TP-6773 5/12a30 Section 6 Electrical System
6.2 Circuit Protection
The AC circuit breakers (optional) protect the wiring
from the AC circuit breakers to the vessel’s distribution
panel. AC circuit breakers trip when they detect a fault in
the output circuit.
After correcting the fault, reset the AC circuit breaker(s)
by placing them in the ON position. Restart the unit. Do
not start the unit under load. See Figure 6-3 for AC
circuit breaker ratings. The unit’s voltage configuration
determines the circuit breaker selection.
Note: Circuit breaker ampere rating and availability are
subject to change.
6.2.1 Circuit Breaker Considerations
Mounting location. Mount the circuit breakers in the
generator set’s junction box. See Section 6.2.2.
Sizing. Use the generator set voltage/frequency
configuration to determine the circuit breaker
amperage. If the generator set voltage configuration
changes, change the circuit breaker to provide optimum
protection.
For circuit breaker application and selection
information, contact an authorized distributor/dealer.
Have a qualified electrician or technician install circuit
breakers and reconnect the generator set. Comply with
all governing standards and codes.
Amps
Voltage
Number
of Poles
Model(s)
18 480 3 9EFKOZD (3 ph.)
20 250 3 11EKOZD (3 ph.)
22 250 2 5EFKOD
23 480 3 11EKOZD (3 ph.)
25 250 2 6EKOD
27 250 1 5EFKOD
30 250 1 7EFKOZD
35
250 1 7EFKOZD
250 2 7EFKOZD
480 3 11EKOZD (3 ph.)
40
250 1 9EFKOZD (1 ph.)
250 3 11EKOZD (3 ph.)
42 250 2
9EKOZD &
9EFKOZD (1 ph.)
50
250 2 11EKOZD (1 ph.)
250 1 6EKOD
85 250 1 9EKOZD
100 250 1 11EKOZD (1 ph.)
Figure 6-3 AC Circuit Breaker Ratings, Listed By
Amps
Accidental starting.
Can cause severe injury or death.
Disconnect the battery cables before
working on the generator set.
Remove the negative (--) lead first
when disconnecting the battery.
Reconnect the negative (--) lead last
when reconnecting the battery.
WARNING
Disabling the generator set. Accidental starting can
cause severe injury or death. Before working on the
generator set or connected equipment, disable the generator
set as follows: (1) Move the generator set master switch to the
OFF position. (2) Disconnect the power to the battery charger.
(3) Remove the battery cables, negative (--) lead first.
Reconnect the negative (--) lead last when reconnecting the
battery. Follow these precautions to prevent starting of the
generator set by an automatic transfer switch, remote
start/stop switch, or engine start command from a remote
computer.
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