Starweld Quatro 450 Operato
r’s Manual
8
3.4 Weld Cable Sizes
Turn off power before connecting to unit output terminals
Do not use worn, damaged, and undersized cables
Minimum welder cable size (mm
2
)
Welding
Amperes (A)
20
40
60
80
100
Total
Cable
Length
(m)
50
16
16
16
25
25
100
16
25
35
50
50
150
16
35
50
70
70
200
25
35
70
95
95
250
35
50
70
95
120
300
35
70
95
95
120
350
50
70
95
120
120
400
50
70
95
120
120
Figure 2: Cable Area vs. Cable Length
This chart serves only as a general guide, if the unit tends to trip early on overtemp
or the cables become warm then the next size cable should be used.
If one wants to weld at 150A 60% duty cycle with the total cable length, that is earth
cable and electrode cable, of 100m then the cable size should be 70mm
2
.
3.5 Stick Weld Connection
Stick welding requires positive polarity, that is the electrode holder is connected to
the unit’s positive output socket (red connector) and the earth clamp is connected to
the unit’s negative output socket (black connector).
3.6 MIG Weld Connection
MIG welding requires positive polarity, that is the earth clamp is connected to the
unit’s negative output socket, the separate wire feeder unit is connected to the
positive terminal through an interconnecting cable, the wire feeder control cable also
needs to be connected to the female 14 way socket.
3.7 TIG Weld Connection
TIG welding requires negative polarity, that is the electrode holder is connected to
the unit’s negative output socket and the earth clamp is connected to the unit’s
positive output socket.
