Tweco 181i Thermal Arc Fabricator - Manual (Page 32)

Fabricator 181i
INSTALLATION, OPERATION AND SETUP 3-2 Manual 0-5191
WARNING
The Fabricator 181i must be electrically connected by a qualified electrical trades-person. Damage to the
PCA (Power Control Assembly) could occur if 265 VAC or higher is applied to the Primary Power Cable.
WARNING
ELECTRIC SHOCK can kill; SIGNIFICANT DC VOLTAGE is present after removal of input power. DO NOT
TOUCH live electrical parts.
SHUT DOWN welding Power Source, disconnect input power employing lockout/tagging procedures. Lock-out/
tagging procedures consist of padlocking line disconnect switch in open position, removing fuses from fuse box,
or shutting OFF and red-tagging circuit breaker or other disconnecting device.
Electrical Input Requirements
Operate the welding Power Source from a single-phase 50/60 Hz, AC power supply. The input voltage must match
one of the electrical input voltages shown on the input data label on the unit nameplate. Contact the local electric
utility for information about the type of electrical service available, how proper connections should be made, and
inspection required. The line disconnect switch provides a safe and convenient means to completely remove all
electrical power from the welding power source whenever necessary to inspect or service the unit.
Do not connect an input (WHITE or BLACK) conductor to the ground terminal.
Do not connect the ground (GREEN) conductor to an input line terminal.
• Correctly installed, if necessary, by a qualified electrician.
• Correctly earthed (electrically) in accordance with local regulations.
• Connected to the correct size power point, fuse and primary supply lead based on Table 3-1.
WARNING
An electric shock or fire hazard is probable if the following electrical service guide recommendations
are not followed. These recommendations are for a dedicated branch circuit sized for the rated output
and duty cycle of the welding Power Source.
50 / 60 Hz Single Phase Supply
Supply Voltage 230V AC
Input Current at Maximum Output 35.7 Amps
Maximum Recommended Fuse* or Circuit Breaker Rating
*Time Delay Fuse, UL class RK5. Refer to UL248
Maximum Recommended Fuse^ or Circuit Breaker Rating
^Normal Operating , UL class K5. Refer to UL248
50 Amps
50 Amps
Minimum Recommended Input Cable Size 12 AWG
Maximum Recommended Input Conductor Length 50 ft (15m)
Minimum Recommended Grounding Conductor Size 12 AWG
Table 3-1: Electrical Service Guide
NOTE
Welding arc outs may be experienced if an extension cord is used when STICK welding when operation
the Power Source on 208 VAC due to the lack of DC voltage at the STICK electrode.