23
Operational safety
1 = Welding power source, 2 = Electric tool,
3 = Workpiece 1, 4 = Workpiece 2
The welding current flows via the protective conductors of the
two electric tools, if by mistake welding takes place on tool 4
without having changed connections (earth) of the welding
current return line from workpiece 3 to workpiece 4 .
The protective conductor in the mains cable and in the
building installation are hereby destroyed.
If possible, use a potential compensating line with a high
cross-section!
Please observe the following points to prevent stray currents.
• Fasten workpiece clamp as close as possible to the welding
spot.
• Please take care that the torch not in use is stored with a
sufficient insulation.
• Please take care that the torch not in use is protected
against unintended triggering of the start command.
• Switch off welding equipment which is not in use to avoid
electric accidents.
Figure 5. with grounded electronic tools
CAUTION!
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