18
TIG tungsten size / amperage guide
All values below are based on using pure argon shielding gas. Other current values may be
employed depending on the shielding gas and application
ELECTRODE RATINGS
Electrode Diameter (mm)
2% Thoriated on DC
(amps)
Red Tip – Grind to point
Pure Tungsten on DC
(amps)
1.0mm / 0.040”
5 - 80
30
1.6mm / 1/16”
40- 150
80
2.4 mm/ 3/32”
140 - 250
130
3.2mm / 1/8”
240 - 400
180
4.0mm / 5/32”
380- 500
240
4.8mm / 3/16”
500- 750
300
6.4mm / 1/4”
750 - 1000
400
Welding in STICK MMA (SMAW) Mode
1. Fit MMA electrode holder to + terminal on machine (Fig 3.2)
2. Fit earth lead to - terminal on machine and to work piece (Fig 3.1)
3. Select stick on front panel (Fig 4.22)
4. Place electrode in holder
5. Select desired welding current (Fig 4.13) with selector knob (Fig4.21)
6. Select desired MMA options, Arc Force, Hot start time and Amps (Fig 4.20)
7. Strike arc and weld
WARNING!
ELECTRIC SHOCK CAN KILL
When machine is switched to MMA mode, output terminals are always live, take care and do not
touch electrode and earth by person at same time, otherwise electric shock will occur.
The foot pedal has no effect on welding current in MMA mode and the gas flow and high frequency
starting circuit is disabled.
