Tweco 251 Thermal Arc Fabricator - Manual (Page 24)

FABRICATOR 251
INSTALLATION 3-2 Manual No. 0-4847
3.04 Mains Supply Voltage Requirements
The Mains supply voltage should be within ± 10% of the rated Mains supply voltage. Too low of a supply voltage may
cause poor welding performance or wirefeeder malfunction. Too high of a supply voltage will cause components to
overheat and possibly fail.
Install a power outlet for each Power Supply and fit fuses as per the machine specifications.
!
WARNING
Thermal Arc advises that your Fabricator 251 be electrically connected by a qualified electrical trades-
person.
The Fabricator 251 Power Supply is factory connected for the following input power supply voltage:
Input Power
Supply Lead Size
Lead Current
Rating
Lead
Length
Machine
Voltage Setting Duty Cycle
8 AWG 40 Amps 10ft (3m) 230V 250A @ 60%
Table 3-1: Factory Fitted Input Power Supply Leads Fitted to the Fabricator 251
3.05 Alternative Mains Supply Voltages
!
WARNING
The Fabricator 251 input power supply lead should be replaced with leads as specified in Table 3-2 when
the Fabricators input power supply voltage is changed.
The Power Supply is suitable for use on the following input power supply voltages:
Input Power Supply
Voltage Setting
Mains Supply
Lead Size
Input Power
Outlet Size Fuse Size Duty Cycle
208V 8AWG (8.0mm2) 50 Amps 50 Amps 250A @ 60%
230V 8AWG (8.0mm2) 50 Amps 50 Amps 250A @ 60%
Table 3-2: Mains Supply Lead Sizes for Alternative Mains Supply Voltages
National Electrical Code Standards permit the rating of the fuse or thermal circuit breaker protecting the circuit conductors
to be double the standard rating for any circuit used exclusively for an electric arc welder. Check local requirements for
your situation in this regard.