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Never bypass the circuit breakers. Without overload
protection, the RANGER 300 D/DLX could overheat
and/or cause damage to the equipment being used.
PREMISES WIRING
The RANGER 300 is suitable for temporary, standby,
or emergency power using the engine manufacturer’s
recommended maintenance schedule. With its three-
wire grounded neutral generator, it can be permanent-
ly installed as a standby power unit for 240 volt, three-
wire, single phase 50 ampere service.
Only a licensed, certified, trained electrician should
install the machine to a premises or residential electri-
cal system. Be certain that:
• The installation complies with the National Electrical
Code and all other applicable electrical codes.
• The premises is isolated and no feedbacking into
the utility system can occur. Certain state and local
laws require the premises to be isolated before the
generator is linked to the premises. Check your
state and local requirements.
• A double pole, double throw transfer switch in con-
junction with the properly rated double throw circuit
breaker is connected between the generator power
and the utility meter.
The following information and the connection diagram,
Figure A.2, can be used as a guide by the electrician
for most applications to premises wiring.
1. Install a double pole, double throw switch between
the power company meter and the premises dis-
connect. The switch rating must be the same as
or greater than the premises disconnect and
service overcurrent protection.
2. Take the necessary steps to assure that the load is
limited to the capacity of the RANGER 300 by
installing a 50 amp 240 volt double pole circuit
breaker. Maximum rated load for the 240 volt aux-
iliary is 50 amperes. Loading above 50 amperes
will reduce output voltage below the allowable
– 10% of rated voltage. This may damage appli-
ances or other motor-driven equipment.
3. Install a 50 amp 120/240 volt plug (NEMA type 14-
50) to a double pole circuit breaker using No. 8 or
larger, 4 conductor cable of the desired length.
(The 50 amp 120/240 volt plug is available in the
optional power plug kit.)
4. Plug this cable into the 50 amp 120/240 volt
receptacle on the RANGER 300 case front.
INSTALLATION
A-8 A-8
RANGER 300 D AND 300 DLX
WARNING
CAUTION