Magnum MMG 230, Operating Manual, Page: 31 / 48

4-POSITION VOLTAGE SELECTOR SWITCH (OPTIONAL)
The optional four position voltage selector switch is located on a panel attached to the generator behind the door
located next to the fuel tank filler. The voltage selector is a four position switch that 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.
NOTICE
NEVER attempt to change the voltage selector switch while the engine is running!
This will cause severe arcing and damage to the switch and generator windings.
The voltage selector switch is equipped with a locking mechanism. Once the proper voltage has been selected,
push the red latch on the inside of the switch handle up and insert a padlock through the handle. By locking the
handle in place you will prevent unauthorized personnel from changing the switch settings.
Note: (The following applies to units without a convenience outlet buck transformer:) When the voltage selector
switch is in position for 277/480V 3Ø, voltage at the two GFCI duplex convenience outlets is 139 Volts and the
voltage at the three twist-lock outlets is 139/240 Volts. When the voltage selector switch is in position for 120/208V
3Ø, voltage at the two GFCI duplex convenience outlets is 120 Volts and the voltage at the three twist-lock outlets
is 120/208 Volts. When the voltage selector switch is in position for 120/240 3Ø (DELTA), voltage at the two GFCI
duplex convenience outlets is 120 Volts and the THREE TWIST LOCK OUTLETS SHOULD NOT BE USED.
When the voltage selector switch is in position for 120/240V 1Ø, voltage at the two GFCI duplex convenience
outlets is 120 Volts and the voltage at the three twist-lock outlets is 120/240 Volts.
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