Manual

TP-6515 1/1132 Section 3 Scheduled Maintenance
3.9 C ircuit Protection
If the generator set circuit breaker trips or the fuses blow
repeatedly, see Section 4, Troubleshooting, for possible
causes.
3.9.1 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 1-2. The circuit breaker rating is shown in
Figure 3-11. 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.
Model
Circuit Breaker Rating, Amp
8.5RES 40
12RES 50
12TRES 20
18RES 80
18TRES 25
Figure 3-11 Line Circuit Breaker Rating
3.9.2 Fuses
Three panel-mounted fuses protect the alternator and
electrical controls. See Section 1.5 for fuse locations.
Another 10-amp fuse protects the battery charger.
See Figure 3-12 for fuse part numbers. Always identify
and correct the cause of a blown fuse before restarting
the generator set. Refer to Section 4, Troubleshooting,
for conditions that may indicate a blown fuse. Replace
blown fuses with identical replacement parts.
Fuse
Rating, Amp Label Part Number
Auxiliary winding 20 F1 292937
Relay interface
board
10 F2 223316
Controller 10 F3 223316
Battery charger
(RES)
10 — 223316
Figure 3-12 Fuses