Voltage Selector Switch - Generac Power Systems MAGNUM MMG75D Operating Manual

Operation
1. With the unit running, press
Press . The voltages displayed will begin flashing.
2.
Use ▲ and ▼ to adjust the voltage.
3.
Press  to confirm the new voltage. The voltages displayed will stop flashing.
4.

VOLTAGE SELECTOR SWITCH

The voltage selector switch mechanically changes the connections between the generator output leads and the
connection lugs on the main control panel. Voltage ranges are selected by rotating the handle on the switch to the
desired voltage.
Electric Shock. Never change the voltage selector switch while the engine is running
or the controller is on. If the engine is running or starts while the setting is being
changed, severe arcing will occur, resulting in death, serious injury or damage to the
The voltage selector switch is equipped with a lockout mechanism. Once the proper voltage has been selected,
insert a padlock through the lockout hole(s). By locking the handle in place, unauthorized changing of the voltage
setting is prevented.
120/
208V
120/
277/
240V
480V
Switch styles vary by model.
28
Manual Mode
Voltage Adjust
- Press , voltage will begin flashing
- Use and arrows to adjust voltage
- Press to confirm new voltage. Numbers will stop flashing
GEN
480
+ -
V
277
Figure 3-6. Voltage Adjust Screen
.
+ -
V
WARNING
switch and generator windings.
120/208V 3-PHASE
MMG75D-100D Operating Manual
V
L-N Average
V
L-L Average
00396
L1-L2 = 208V L1-N = 120V
L2-L3 = 208V L2-N = 120V
L3-L1 = 208V L3-N = 120V
VOLTAGES AT RECEPTACLES
RECEPTACLE
GFCI
GFCI w/Buck
Twist-locks
N =
L-L L-N
- 120V
- 120V
208V 120V
00085
33701 C