- 19 -
Mount
the
line
disconnect
switch
with
fuse
or
each
no-fuse
breaker
on
each
welding
machine.
Ԙ
Gas regulator
ԙ
Gas
hose
Base
metal
or
jig
Ԝ
Input
cables
and
Grounding
wire
ԛ
GREEN/YELLOW
cable
for grounding
cable
Surely
connect
the
input
and
grounding
Cables 4mm
2
to
the
circuit
breaker
.
Ground a work piece if a
local law requires.
Ԛ
Water-cooling hose
8.
CONNECTION PROCEDURE AND GROUND FOR SAFETY USE (continued)
CAUTION
To prevent electromagnetic troubles, read the following.
Also, if electromagnetic troubles occur, check the following again.
٨
Add a noise filter to the input cables.
٨
Do not ground the welding power source commonly with other machines.
CAUTION
٨
Be sure to install a switch with fuse or a circuit breaker (for motor) to the input sides of each
welding machine.
The following figure shows the cable connections. When using the air-cooled torch, the water supply
hose is not necessary. For STICK welding, the water/gas hoses are not necessary.
CAUTION
Be sure to ground the case of the welding power source.
Use a grounding cable 4mm
2
or more in thickness.
٨
If the welding power source which is not grounded is used, voltage will be generated in the
case through the capacitor between the welding power source input circuit and the case or
stray capacity (electrostatic capacity naturally generated between the input circuit and the
metal enclosure). If you touch the case or the base metal, you may suffer from electric shock.
Be sure to ground the case of the welding power source or jig.
HF