SECTION 2
INSTALLATION
7
Table 2-1. Recommended Sizes for Input
Conductors and Line Fuses
switch through the strain relief hole in the rear
panel. Connect the primary leads to the Line
Switch (LS) for either single- or 3-phase input
and the ground lead (green) to the stud on the
base of the unit as shown in figure 2-1. After
making sure the connections are secured, tighten
the strain relief coupling to secure the input
cable.
It is of the utmost importance that the chassis be
connected to an approved electrical ground to pre-
vent accidental shock. Take care not to connect the
ground wire to any of the primary leads.
D. Recheck all connections to make sure they are
tight, well insulated, and properly connected.
208
208
208
208
DOUBLE LINKS
230
460
230
230
460
230
Figure 2-2. Input Voltage Terminal Board
(TB) Connections
Rated Load
Volts Amps
Input &
Gnd.
Conductor*
CU/AWG
Time-Delay
Fuse Size
Amps
208
230
460
80
65
40
6
6
8
90
80
60
* Sizes per National Electric Code for 90 °C rated copper conductors
@ 30 °C ambient. Not more than three conductors in raceway or
cable. Local codes should be followed if they specify sizes other
than those listed above.
B. As shipped, the power source is set up for 460-
volt input power. If using 208- or 230-volt input,
two links on the input terminal board (located
inside the power source) must be repositioned as
marked on the plate (see Figure 2-2). The input
terminal board connections will be visible after
removing the top cover.
C. The factory-supplied input power cable is con-
nected to the power source ON-OFF switch.
However, if customers wish to connect their own
input power leads, proceed as follows: With the
top cover and left side panel removed, thread the
input conductor cable from the wall disconnect
2
6
4
-
+
1ø Hookup
3ø Hookup
For interconnecting control cable(s) part number(s) and
hookup, refer to appropriate system instruction booklets and
paragraph 2.5.
Customer's Fused Line Disconnect Switch
Make sure all input power is disconnected
before performing any operation inside the power source.
No. 6 AWG, 4/c, type SO, 12-ft lg
input power cable factory installed to
line switch (LS) or customer may
install own 4-conductor (3 phase) or
3-conductor (1 phase) cable and
ground (see paragraph 2.3) and con-
nect to Line Switch as shown.
19-pin MIG
Receptacle J1
Ground
Stud
Line Switch (LS) Rear View
Approved
Earth Ground
To Wire Feeder/
Plumbing Box/Torch.
See appropriate in-
struction booklet.
MALE CONNECTOR
(supplied w/power source)
WELDING CABLES (customer
supplied, see Table 2-1) are set
up for DCRP (negative to work)
operation. See paragraph 2.4.
To Work
NEGATIVE (-)
OUTPUT
POSITIVE (+)
OUTPUT
Figure 2-1. Input Power and MIG Interconnection Diagram