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8. CONNECTION PROCEDURE AND GROUND FOR SAFETY USE
(Continued)
8.4 Grounding and Connecting of Input Power Source
WARNING
Follow the instructions below to avoid electric shock.
Touching the live electrical parts may result in a fatal electric shock and severe
burn.
⚫
Do not touch the live electrical parts of the welding machine.
⚫
Have qualified electrical engineer ground the welding power source and the base metal or
jig electrically connected in accordance with a local law.
⚫
Disconnect the welding power source from input power supply by turning off the line
disconnect switch in the power box before grounding the welding power source or base
metal and connecting the cables or hoses.
⚫
After connecting the cables, cover the power source with the cover or the case.
⚫
Use a leakage protector when operating the welding power source in construction sites or
other damp locations or on iron plates, steel structures, etc.
CAUTION
Be sure to install a switch with fuse or a circuit breaker (for motor) o the input sides of each
welding machine.
CAUTION
Be sure to ground the case of the welding power source.
If the welding power source operates without grounding, voltage will be generated in the
case through the capacitor between the welding power source input circuit and the case or
floating capacity (electrostatic capacity naturally generated between the input conductor
and the case metal). If you touch the case or the base metal, you may receive an electric
shock.
Mount a switch with fuses or a circuit breaker on each welding power source.
Base metal or jig
Ground cable
(if required by local law)