Tweco 161 S Inverter Arc Welder - Manual (Page 25)

INSTALLATION THERMAL ARC 161 S
Manual 0-5073 3-3 3-3 Installation Installation
Input Power
Each unit incorporates an INRUSH circuit. When the MAIN CIRCUIT SWITCH is turned on, the inrush circuit provides
pre-charging for the input capacitors. A relay in the Power Control Assembly (PCA) will turn on after the input capacitors
have charged to operating voltage (after approximately 5 seconds)
NOTE
Damage to the PCA could occur if 253 VAC or higher is applied to the Primary Power Cable.
Model Primary Supply Lead
Size (Factory Fitted)
Minimum Primary
Current Circuit Size
(Vin/Amps)
Current & Duty Cycle
LIFT TIG (GTAW) STICK (SMAW)
Thermal Arc
161 S
12 AWG (3.3mm²)
115V/27.3A - 100A @ 35%
115V/20A 110A @ 50% -
208-230V/25A - 160A @ 30%
208-230V/15A 160A @ 30% -
Table 3-2: Primary Circuit Sizes to Achieve Maximum Current