Generac Power Systems 4270-0 - Manual (Page 33)

Section 2 - Installation
INSTALLATION
QUIETPACT™ 75D Recreational Vehicle Generator
p. 2.6.3. 1 Generator Coversion to
120 Volts Only - Dual Circuits
NOTE:
Conversion of a QUIETPACT” generator from
"120/240 volt dual voltage" to "120 volts only -
dual circuits" (or vice-versa) requires re-routing
wires within the unit enclosure. It is recommend­
ed that this conversion be performed by a Generac
Authorized Service Dealer.
Figure 2.16 shows the stator power winding connec­
tions for 120 volts only - dual circuits. Two stator
power windings are used, with each winding capable
of supplying half of the unit's rated wattage/amperage
capacity. The circuit from each winding is protected
against overload by a line breaker (CBl and CBIA).
Line breakers CBl and CBIA have a trip rating of 35
amps.
To convert from "120/240 volt dual voltage" to "120
volts only - dual circuits", disconnect battery power
from the generator and reverse stator lead wires 33
and 44 as follows:
NOTE:
It is necessary to feed stator lead wires 33 and 44
through grommets on the electrical enclosure and
engine controls box in order to perform the re-rout­
ing outlined below. The front and top unit enclo­
sure panels as well as the user controls panel must
be removed to perform this. After re-routing, wires
should be properly tied down to prevent chafing or
contact with moving internal components
1. Re-route stator lead wire 44 from the line side
terminal of CBIA to the ground stud location pre­
viously occupied by stator lead wire 33.
2. Move smaller gauge (#18 AWG) wire labeled #44,
from the top of CBIA to the top of CBl.
Renumber this wire #11.
3. Re-route stator lead wire 33 from the ground
stud adjacent to the four-position terminal block
to the line side terminal on CBl (renamed as
CBIA in Figure 2.16).
4. Re-number ground wire "33" located between
the four-position terminal block and ground as
wire "44".
5. Re-number wire "44A" as "33A".
6.
Connect a 12 AWG jumper wire between line
breakers CBl and CBIA as shown in Figure 2.16.
7. Remove the "tie bar" between the two line break­
er switch handles.
When connecting vehicle load leads, the following
rules apply:
• Connect 120-volt, single-phase, 60-Hertz, AC elec­
trical loads requiring up to the trip rating of circuit
breaker CBl across AC output leads T1 (red) and
T2 (white).
Connect 120-volt, single-phase, 60-Hertz, AC elec­
trical loads requiring up to the trip rating of circuit
breaker CBIA across AC output leads T3 (black)
and T2 (white).
Try to keep the load balanced between the two cir­
cuit breakers and stator windings.
The neutral line (T2, white) on all units is a ground­
ed neutral.
A
-------- A CAUTION ik--------------------
Do NOT connect electrical loads in excess of any
circuit breaker rating or you will develop prob­
lems with circuit breaker tripping, which causes a
loss of AC output. Also, do NOT exceed the gen­
erator's rated wattage capacity. Add the watts or
amps of all lighting, appliance, tool and motor
loads the generator will operate at one time. This
total should be less than the unit's rated
wattage/amperage capacity.
Figure 2.15
- Connections for 120/240 Dual
Voltage
Ti T3
|wlMiM||M|
^-vixujLT-' SFiyNDp L tjujuji J
Figure 2.16 - Connections for 120 Volts Only ■
Dual Circuits
r" n
Generac* Power Systems, Inc. 31