Voltage Selector Switch - Generac Power Systems MAGNUM MMG25IF4 Operating Manual

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 changed,
severe arcing will occur, which may result in death, serious injury, 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.
120/
208V
277/
480V
Switch styles vary by model.
= Not recommended for normal use
120/ 120/
208V 240V 3PH
277/ 120/
480V 240V
1PH
Switch styles vary by model.
= Not recommended for normal use
36949 B
WARNING
switch and generator windings.
120/208V 3-PHASE
277/480V 3-PHASE
120/240V 3-PHASE
4 Position Voltage Selector Switch Option
MMG25I-35D-45I-55DF4 Operating Manual
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
L1-L2 = 480V L1-N = 277V
L2-L3 = 480V L2-N = 277V
L3-L1 = 480V L3-N = 277V
VOLTAGES AT RECEPTACLES
RECEPTACLE
GFCI
GFCI w/Buck
Twist-locks
L1-L2 = 240V L1-N = 120V
L2-L3 = 240V L2-N = 208V
L3-L1 = 240V L3-N = 120V
VOLTAGES AT RECEPTACLES
RECEPTACLE
GFCI
GFCI w/Buck
Twist-locks
Operation
N =
L-L L-N
- 120V
- 120V
208V 120V
00085
N =
L-L L-N
- 139V
- 120V
240V 139V
00083
N =
L-L L-N
- 120V
- 120V
120V 0/120V
00086
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