Lincoln Electric IM992 manual STANDbY Power Connections

A-8 INSTALLATION 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 receptacle. The 120/240V Single Phase and the 240V Three-Phases have a 50 Amp 3-pole Circuit Breaker that disconnects both hot leads and all Three Phases simultaneously

STANDbY POWER CONNECTIONS

The VANTAGE® 300 is suitable for temporary, stand- by or emergency power using the engine manufactur- er’s 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 customer’s 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 allow- able - 10% of rated voltage which may damage appliances or other motor-driven equipment and may result in overheating of the engine and/or alternator windings.

•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 receptacle on the case front.

VANTAGE® 300