MULTIQUIP GAW180HE Operation And Parts Manual page 26

WELDING CABLE AND POLARITIES
1. Lift the output terminal protective cover (Figure 12) on the
welder-generator to gain access to the welding output
terminals.
PROTECTIVE
COVER
Figure 12. Protective Cover
2. Next, remove the wings nuts and flat washers that are
attached to the output terminals.
3. Place welder cables onto output terminals (post). Select
apporiate polarity depending on application. Reference
Table 8 and Table 9.
WING NUT
WASHER
OUTPUT
TERMINAL
Figure 13. Welding Cable Attachment
NOTICE
ALWAYS attach a terminal ring on the end of the
welding cables. NEVER attach stranded or exposed
wires to the output terminals. This condition could cause
arcing which could start a fire.
PAGE 26 — GAW180HE/HEA WELDER-GENSET • OPERATION AND PARTS MANUAL — REV. #1 (10/01/19)
W
E L
D I
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O U
T P
U T
T E
R M
I N
A L
S
TERMINAL
RING
WELDING
CABLE
STRANDED
WIRE
INSPECTION/SETUP
4. Reinstall wing nuts and washers back onto output
terminals. Tighten wing nuts securely to prevent arcing.
NOTICE
NEVER allow the terminal ends of the welding cables
to come in contact with each other or the frame of
the welder-generator. The possibility exits of creating
sparks which could ignite a fire causing damage to the
equipment and bodily harm.
Table 8. Polarities and Applications
Polarity Welding Method
(+)...grounding (base metal)
Straight Polarity
(–)...welding holder
(+)...welding holder
Reverse Polarity
(–)...grounding (base metal)
WELDING CABLE SELECTION
The welding cable should be larger in size as it becomes
longer or its current becomes higher. Prepare a cable with
suitable size by referring to the table below.
Calculations for Table 9 are based on a voltage drop of 4
volts maximum.
Table 9. Total Cable (Copper) in Weld Circuit Not Exceeding
Length (ft/m)
50
(15)
Weld Current (A)
50 #5
100 #5
150 #5
180 #5
Reference Table 10 for applicable electrode size.
Table 10. Applicable Electrode Size
Welding Current (A)
Applicable Electrode
Typical Applications
Arc welding for steel material of general
structures, and for thick plates
Arc welding for copper alloy
Build-up welding
Air gouging
Arc welding of thin plates
Arc welding of stainless steel
100 150 200 250
(30) (46) (61) (76)
#5 #5 #5 #5
#5 #4 #3 #2
#4 #2 #1 #1/0
#3 #1 #1/0 #2/0
30~180
3/32"~5/32"
300
(91)
#4
#1
#2/0
#3/0