16 GB/IE/NI/CY/MT
electrically conductive surfaces
and out of the welder’s reach.
Additional protection against a
shock from the mains power in
the event a fault can be provided
by using a fault-circuit interrupter,
which is operated with a leakage
current of no more than 30 mA
and covers all mains-powered
devices in close proximity. The
fault-circuit interrupter must be
suitable for all types of current.
There must be a way of rapidly
disconnecting the welding power
source or the welding current cir-
cuit (e.g. emergency stop device)
which is easy to reach. When
using welding devices under
electrically-hazardous conditions,
the output voltage of the welding
device during idle operation must
not be higher than 113 V (peak
value). Based on the output volt-
age this welding device may be
used in these conditions.
Welding in tight spaces
When welding in tight spaces
this may pose a hazard through
toxic gases (risk of suffocation).
In tight spaces you may only
weld if there are trained individu-
als in the immediate vicinity who
can intervene if necessary. In this
case, before starting the welding
procedure, an expert must carry
out an assessment in order to
determine what steps are neces-
sary, in order to guarantee safety
at work and which precautionary
measures should be taken during
the actual welding procedure.
Total of open circuit
voltages
When more than one welding
power source is operated at the
same time, their open circuit
voltages may add up and lead to
an increased electrical hazard.
Welding power sources must be
connected in such a way that the
danger is minimised. The indi-
vidual welding power sources,
with their individual control units
and connections, must be clearly
marked, in order to be able to
identify which device belongs to
which welding power circuit.
Protective clothing
At work, the welder must pro-
tect his/her whole body by
Safety instructions
