Lincoln Electric IDEALARC IM402-B Operator's Manual page 10

• Connect the Idealarc 250 grounding terminal located
under the reconnect panel (marked
electrical ground per the U.S. National Electrical
Code and any applicable local codes.
• Turn the power switch on the Idealarc 250 "OFF"
before connecting or disconnecting output cables or
other equipment.
• Only qualified personnel should perform this installa-
tion.
: If the optional K866 undercarriage
is to be installed, it should be done before connecting
the welder to power lines. Instructions are included
with the undercarriage.
200
208
220/230 50/60
380
400
440/460 50/60
500
575
) to a good
50/60 58 81 #8
60 55 77 #8
50 70 #8
50 29 41 #10
50/60 29 40 #10
25 35 #12
50 22 31 #14
60 20 28 #14
–
The machine should be located in a clean, dry place
where there is free circulation of clean air such that air
movement in the back and along the sides will not be
restricted. Dirt and dust that can be drawn into the
machine should be kept to a minimum. Failure to
observe the precautions can result in excessive
operating temperatures and nuisance shutdown of the
machine.
Be sure the voltage, phase and frequency of the input
power is as specified on the welder rating plate locat-
ed on the rear panel of the machine. Either a single
phase or one phase of a three phase line can be
used.
Have a qualified electrician install the machine per the
following instructions:
Remove the left side panel (viewed from the front).
Route the input power lines through the hole in the
rear panel and center baffle. Lug the input leads with
a ring terminal for a 1/4" (6mm) screw. Connect
lugged leads to L1 and L2 of the reconnect panel per
the wiring diagram pasted to m inside of the side
panel. Input connection must conform to the U.S.
National Electrical Code and all local codes.
Models designed for two or three input voltages are
shipped connected for the highest voltage.
Reconnect instructions are on the diagram pasted to
the inside of the side panel. Consult rating plate on
the rear panel for machine input voltage rating.
The welder frame must be grounded. A stud marked
with the symbol
panel is provided for this purpose. See the U.S.
National Electrical Code for details on proper ground-
ing methods.
Fuse the input circuit with the recommended super lag
fuses. Choose an input and grounding wire size accord-
ing to local codes or use the following table. "Delay type"
circuit breakers may be used in place of fuses. Using
fuses or circuit breakers smaller than recommended may
result in "nuisance" tripping from welder inrush currents
even if not welding at high currents.
#6 #8 70
#6 #8 70
#6 #8 70
#8 #10 40
#8 #10 40
#10 #10 35
#12 #10 30
#12 #10 25
–
10
located under the reconnect
100
100
90
50
50
45
40
40