TP-6735 7/1786 Section 5 Component Testing and Adjustment
5.14 Circuit Protection
If the generator set circuit breaker trips or the fuses blow
repeatedly, see Section 3, Troubleshooting, for possible
causes.
5.14.1 Line Circuit Breaker
A line circuit breaker interrupts the generator output in
the event of a fault in the wiring between the generator
and the load. The line circuit breaker location is shown
in Figure 1-1. If the circuit breaker trips, reduce the load
and switch the breaker back to the ON position. With the
breaker in the OFF position the generator set runs but
the generator output is disconnected from the load.
5.14.2 Fuses and Mini-Breaker
Two fuses and a mini-breaker protect the alternator and
electrical controls. The fuses and breaker are located in
the service access area of the RDC/DC controller. A
battery charger fuse is located in the positive battery
lead. Check for and replace any blown fuses or reset
the breaker before replacing other components.
See Figure 5-40 for fuse part numbers. Always identify
and correct the cause of a blown fuse before restarting
the generator set. Refer to Section 3, Troubleshooting,
for conditions that may indicate a blown fuse. Replace
blown fuses with identical replacement parts.
Fuse/Breaker
Rating,
Amps
Label Part Number
Auxiliary winding 20 BRDCB Resettable
mini-breaker
Starter/Fuel/Flash
(Violet)
7.5 F2 GM66129
Controller (Brown) 3 F3 GM66128
Battery charger 10 — AGS 10
Figure 5-40 Circuit Protection
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