Lincoln Electric IM993 VANTAGE 300 - Manual (Page 16)

A-8 INSTALLATION
VANTAGE ® 300
A-8
NOTE: The 240 V receptacle has two 120 V circuits, but
are of opposite polarities and cannot be paralleled.
All auxiliary power is protected by circuit breakers. The
120V has 20 Amp circuit breakers for each duplex recep-
tacle. The 120/240V Single Phase and the 240V Three-
Phases have a 50 Amp 3-pole Circuit Breaker that dis-
connects both hot leads and all Three Phases simultane-
ously.
STANDBY POWER CONNECTIONS
The VANTAGE ® 300 is suitable for temporary, stand-
by or emergency power using the engine manufactur-
erʼs recommended maintenance schedule.
The VANTAGE ® 300 can be permanently installed as
a standby power unit for 240 VAC, 3 wire, single
phase, 40 amp service. Connections must be made
by a licensed electrician who can determine how the
120/240 VAC power can be adapted to the particular
installation and comply with all applicable electrical
codes.
• Install the double-pole, double-throw switch
between the power company meter and the premis-
es disconnect. Switch rating must be the same or
greater than the customerʼs premises disconnect
and service over current protection.
• Take necessary steps to assure load is limited to
the capacity of the generator by installing a 50 amp,
240 VAC double pole circuit breaker. Maximum
rated load for each leg of the 240 VAC auxiliary is
50 amperes. Loading above the rated output will
reduce output voltage below the allowable - 10% of
rated voltage which may damage appliances or
other motor-driven equipment and may result in
overheating of the engine and/or alternator wind-
ings.
• Install a 50 amp, 120/240 VAC plug (NEMA Type
14-50) to the double-pole circuit breaker using No.
6, 4 conductor cable of the desired length. (The 50
amp, 120/240 VAC plug is available in the optional
K802R plug kit or as part number T12153-9.)
• Plug this cable into the 50 Amp, 120/240 Volt recep-
tacle on the case front.