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Have a qualified electrician connect the input power
leads to the L1, L2, and L3 terminals of the input con-
tactor. Follow all national and local electrical codes.
Use a three-phase line. Refer to the connection dia-
gram located on the inside cover of the access panel
cover. Also see Figure A.3.
INPUT WIRE AND FUSE SIZE
Fuse the input circuit with the super lag fuses recom-
mended on the Technical Specifications page or use
delay type circuit breakers. Choose an input and
grounding wire size according to local or national
codes; also see the Technical Specifications page.
Using fuses or circuit breakers smaller than recom-
mended may result in “nuisance” shut-offs from
welder inrush currents, even if you are not welding at
high currents.
INSTALLATION
A-5 A-5
LINCOLN
®
ELECTRIC
IDEALARC DC-400
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FIGURE A.3 – INPUT POWER SUPPLY CONNECTIONS
1. INPUT SUPPLY LINE
2. INPUT CONTACTOR CR1
3. RECONNECT PANEL