Operation Manual

Operation
26 MMG130DI4/175DI4/205DI4 Operating Manual 33722 D
WARNING
Before any connections are made to the generator, make sure that the main circuit
breaker and the Control Power switch are OFF (O). Potentially lethal voltages may be
present at the generator connection lugs.
DANGER
IMPROPER OR INCORRECT CONNECTIONS TO A BUILDING’S ELECTRICAL SYSTEM
CAN CAUSE POTENTIALLY LETHAL VOLTAGES TO BACKFEED INTO UTILITY LINES.
THIS MAY RESULT IN INJURY OR ELECTROCUTION TO UTILITY WORKERS NEARBY.
MAKE SURE THE GENERATOR IS SUPPLYING POWER TO AN ISOLATED OBJECT
OR BUILDING THAT IS NOT CONNECTED TO ANY UTILITY LINES.
Connections to the lugs should be made by running the power cables up through the
opening in the bottom of the box. DO NOT make any connections directly to the lugs
without routing the cables through the opening. Use a hex-wrench to tighten the cable
connections. The connection lug door is equipped with safety interlock switches that
will trip the main circuit breaker and disable the voltage regulator, if the door is opened
while the unit is operating.
WARNING
Never attempt to disable or modify the lug door safety
switch(es). Equipment damage, personal injury or death
may result.
A ground connection is located next to the connection lugs. The unit MUST be
connected to a good earthen ground for proper operating safety. The generator neutral
is bonded to ground when it is shipped from the factory. The bonding plate will need
to be removed when the generator is used as a standby power source. INSTALLATION
SHOULD BE IN COMPLIANCE WITH THE NATIONAL ELECTRICAL CODE (NEC),
STATE AND LOCAL REGULATIONS.
Figure 3-4. Connection
Lugs
GENERATOR CAM LOCK CONNECTION(S) OPTION
The unit may be equipped with cam lock connections located below the receptacles. These receptacles provide
connection points for the attachment of external loads to the generator. A decal below the cam lock connections
details the proper connections for selected voltages.
WARNING
It is HIGHLY RECOMMENDED that only a trained and licensed electrician perform any
wiring and related connections to the generator. Installation should be in compliance
with the National Electrical Code (NEC), state and local regulations. Failure to follow
proper installation requirements may result in equipment or property damage, per-
sonal injury or death.
WARNING
Before any connections are made to the generator, make sure that the main circuit
breaker and the Control Power switch are OFF (O) and the negative (-) battery cable
is disconnected. Potentially lethal voltages may be present at the generator connec-
tion lugs.
RUN CABLES THROUGH
OPENING IN BOTTOM
OF LUG BOX
00450