Thermal Arc 281 FABRICATOR, Service Manual

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FABRICATOR 281
INSTALLATION - Manual No. 0-4880B
3.04 Primary Input Voltage Requirements
The Primary Input supply voltage should be within ± 10% of the rated Primary Input 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 281 be electrically connected by a qualified electrical trades-
person.
The Fabricator 281 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 281
3.05 Alternative Primary Input Voltages
!
WARNING
The Fabricator 281 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
Primary Input
Supply Lead Size
Input Power
Outlet Size Fuse Size Duty Cycle
208V 8AWG (8.0mm2) 40 Amps *80Amp 250A @ 60%
230V 8AWG (8.0mm2) 40 Amps *80Amp 250A @ 60%
Table 3-2: Primary Input supply lead sizes for alternative Primary Input supply voltages
*Motor start fuses or thermal circuit breakers are recommended for this application. 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.
Changing the Voltage Selection
1. Disconnect the power supply from the Primary Input power source.