INSTALLATION
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CAUTION
Failure to follow these instructions can cause immedi- ate failure of components within the welder.
GROUND CONNECTIONS
The frame of the welder must be grounded. A ground terminal marked with the symbol is located inside the reconnect/input access door for this purpose. See your
local and national electrical codes for proper ground- ing methods. See Figure A.2 for the location of the reconnect/input access door and related connection diagram.
wire sizes. Fuse the input circuit with the recom- mended super lag fuses or delay type circuit breakers. Choose an input and grounding wire size according to local or national electrical codes. Using fuses or cir- cuit breakers smaller than recommended may result in “nuisance”
INPUT VOLTAGE RECONNECT
PROCEDURE
Welders are shipped connected for the highest input voltage listed on the rating plate. To change this con- nection for a different input voltage, refer to reconnect instructions in Figure A.2 and proceed according to the steps that follow for the appropriate voltage.
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INPUT POWER CONNECTIONS
Connect L1, L2, L3 according to the Input Supply Connection Diagram decal located on the reconnect/- input access door. See Figure A.2.
INPUT FUSE AND SUPPLY WIRE
CONSIDERATIONS
Refer to the Technical Specifications at the beginning of this Installation section for recommended fuse and
FIGURE A.2 - CONNECTION DIAGRAM ON RECONNECT/INPUT ACCESS DOOR
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NOTE: Turn main input power to mthe machine OFF before perform- ing reconnect procedure. Failure to do so will result in damage to the machine. DO NOT switch the re- connect bar with machine power ON.
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Also called “inverse time” or “thermal/magnetic” circuit breakers. These breakers have a delay in tripping action that decreases as the mag- nitude of the current increases.
POWER WAVE 450
