Thermal Arc 201 TS Service Manual page 25

SAFETY AND INSTALLATION
5. Earthing of the Work Piece
Where the work piece is not bonded to earth for electrical safety, nor connected to earth because of its size and
position, e.g. ship's hull or building steelwork, a connection bonding the work piece to earth may reduce emissions
in some, but not all instances. Care should be taken to prevent the earthing 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 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.
6. Screening and Shielding
Selective screening and shielding of other cables and equipment in the surrounding area may alleviate problems
of interference. Screening the entire welding installation may be considered for special applications.
Manual 0-5148
THERMAL ARC 161STL, 201TS
3-9 Safety and Installation