Welding Current Control Explanation; Stick (Mma) Electrode Polarity - Thermal Arc 161 S Operating Manual

THERMAL ARC 161 S
4.02 Welding Current Control
Explanation
32 Amp Outlet
The mains power 32 Amp circuit breaker or fuse should
not trip at this Weld Current value when STICK weld-
ing.
The environmental conditions that may cause the mains
power 32 Amp circuit breaker or fuse to trip are:
a) High ambient temperature
b) Worn parts in circuit breaker
c) Using an extension cable
d) Low line mains power voltage
Output Scale for 110V
The inside number scale identifies the avail-
able output weld current for STICK or LIFT TIG weld
modes.
STICK Mode: Identifies the STICK weld point for
32 Amp outlet.
Exceeding these points will cause nui-
sance tripping of the circuit breaker or
fuse.
PROCESS
Art#: A-09903
STICK 32A OUTLET
TIG 32A OUTLET
TIG/STICK
16A OUTLET
Operation
FAULT
110V
230V
Figure 4-2: Current Control
LIFT TIG Mode: A 32 Amp outlet is capable of supplying
enough input power for all LIFT TIG
output weld current values.
Nuisance tripping should not occur on a 32 Amp out-
let.
Output Scale for 230V
The outside number scale identifies the available output
weld current for STICK or LIFT TIG weld modes.
Nuisance tripping should not occur on a 32A 230V outlet
for both STICK & LIFT TIG Modes.

4.03 STICK (MMA) Electrode Polarity

Stick electrodes are generally connected to the "+" Posi-
tive Output Terminal and the work lead to the "−" Negative
Output Terminal but if in doubt consult the electrode
manufacturers literature for further information.
4-2 4-2
OPERATION
32 Amp Outlet
Output Scale for 110V
Output Scale for 230V
Manual 0-5183