Electrical Input Connections - Boss ARC 140 Operating Manual

2.01

Electrical Input Connections

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.
Lockout/ 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 supply whenever necessary to inspect or service the unit.
According to Table 1 and below as a guide to select line fuses for the disconnect switch.
Notice: Fuse size is based on not more than 200 percent of the rated input amperage of the
welding power source (Based on Article 630, National Electrical Code).
BOSS ARC 140¡¢ 160 Operating Manual
Input Voltage
220/240V AC
Table 2
Figure 1 Electrical input connections
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Fuse Size
50 Amps