Spare Wires; Circuit Breakers; Main Circuit Breakers On Coaches; Main Circuit Breakers On Vip Motorhomes - PREVOST H3-41 Maintenance Manual

SECTION 06: ELECTRICAL
2.5

SPARE WIRES

When the vehicle leaves the factory, and even in
the case of a fully-equipped vehicle, an
important number of unconnected spare wires
are routed between
Consequently, for any
additional accessory, refer to page "Spare wires"
in master wiring diagram to determine the
number, the gauge and location of these wires.
CAUTION
Wire size is calibrated according to the breaker
or fuse that protects it. When using a spare
wire to replace a damaged wire, assure that
the spare wire size is equal or larger than the
wire being replaced. Using a wire too small for
the breaker or fuse amperage might cause
overheating of the wire.
NOTE
Spare wires are
identification number and by the letters "SP", to
designate "spare".
2.6

CIRCUIT BREAKERS

The electric circuits are protected by manual
reset type circuit breakers. The main circuit
breakers (Figure 2), as well as those protecting
the A/C system, are located in the main power
compartment.
This type of circuit breaker de-energizes the
circuit without disconnecting any wire.
Some circuit breakers such as CB2 & CB6 are
different in the fact that you may open the circuit
manually, to do so simply press the blue button
on breaker to open the circuit, repair defective
circuit, and afterwards swing red reset lever of
breaker to close the circuit.
FIGURE 1: BREAKER WITH MANUAL TRIP BUTTON
AND RESET LEVER SUCH AS CB2 & CB6
18 PA1621 Maintenance Manual All Series | Revised Sept 2019
the junction boxes.
connection of an
identified by a wire
2.6.1

Main Circuit Breakers On Coaches

FIGURE 2: MAIN CIRCUIT BREAKERS ON COACHES
MAIN CIRCUIT BREAKERS ON COACHES
24 WUP front distribution rear junction box
CB1
12VD & 12 ECU front distribution – ignition
& engine start rear junction box
CB2
rear junction box
24 WUP HVAC evaporator
CB3
rear junction box
24 WUP rear distribution-rear junction box
CB5
24VD rear distribution & WCL
CB6
rear junction box
12 WUP rear distribution-rear junction box
CB8
24VD battery charger – preheater
CB9
rear junction box
12 WUP front distribution – VECF power
CB10
rear junction box
24 WUP Sound system-rear junction box
CB11
24 WUP Inverter 120 VAC outlets
CB13
rear junction box
VD= volts direct. The electrical components
connected to these circuit breakers are direct-
connected to the battery.
2.6.2 Main Circuit Breakers On VIP
Motorhomes
FIGURE 3: MAIN CIRCUIT BREAKERS ON VIP
MOTORHOMES
MAIN CIRCUIT BREAKERS –VIP MOTORHOMES
24 WUP front distribution
CB1
12VD front distribution – ignition & engine
CB2
start
CB3 24 WUP Main distribution power full A/C
CB5 24 WUP rear distribution
24VD rear distribution
CB6
CB8 12 WUP rear distribution
CB10 12 WUP front distribution
90 A
70 A
90 A
90 A
70 A
90 A
70 A
150 A
50 A
150 A
90 A
70 A
90 A
90 A
70 A
90 A
150 A