Connection To The Network; Working Area - gala gar GAR 5T Manuel Technique D'instructions

may reduce emissions in some, but not all instances. Care should be taken to prevent the earthling of the
work piece increasing the risk of injury to users, or damage to other electrical equipment. Where necessary,
the connection of the work piece to earth should be made by a direct connection to the work piece, but in
some countries where direct connection is not permitted, the bonding should be achieved by suitable
capacitance, selected according to national regulations.
Screening and shielding
Selective screening and shielding of other cables and equipment in the surrounding area may
alleviate problems of interference. Screening of the entire welding installation may be considered for special
applications.
1.2 ELECTRICAL SECURITY

1.2.1 Connection to the network

Before connecting your equipment, you must check that:
- The meter, the safety device against over-currents, and the electrical installation are compatible with the
maximum power and the supply voltage of the welding power source (refer to the instructions plates).
- The connection, either single-phase, or three-phase with earth can be effected on a socket compatible with
the welding power source cable plug.
- If the cable is connected to a fixed post, the safety device against electric shocks will never cut the earth.
- The ON/OFF switch located on the welding power source is turned off.

1.2.1 Working area

The use of arc welding implies a strict respect of safety conditions with regard to electric currents. It
is necessary to check that no metal piece accessible by the operators and to their assistants can come into
direct contact with a phase conductor and the neutral of the network. In case of uncertainty, this metal part
will be connected to the earth with a conductor of at least equivalent section to the largest phase conductor.
Make sure that all metal pieces that the operator could touch with a non insulated part of his body
(head, hands without gloves on, naked arms, etc) is properly grounded with a conductor of at least
equivalent section to the biggest supply cable of the ground clamp or welding torch. If more than one metal
ground is concerned, they need to be all interlinked in one, which must be grounded in the same conditions.
Unless very special care have been taken, do not proceed to any arc welding or cutting in conductive
enclosures, whether it is a confined space or the welding machine has to be left outside. Be even more
prudent when welding in humid or not ventilated areas, and if the power source is placed inside (Decree
dated 14.12.1988, Art. 4).
1.2.3 Risks of fire and explosion
Welding can originate risks of fire or explosion. You have to pay attention to fire safety regulation
- Remove flammable or explosive materials from welding area;
- Always have sufficient fire fighting equipment;
- Fire can break out from sparks even several hours after the welding work has been finished.
1.3 INDIVIDUAL PROTECTION
1.3.1 Risks of external injuries
Arc rays produce very bright ultra violet and infrared beams. They will damage eyes and burn skin if
the operator is not properly protected.
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