Lincoln Electric FineLine 12864 Operator's Manual page 117

BK8053-000107 Rev A.01
A.4.3 Plasma Cutting Cables
The plasma cutting cables should be kept as short as possible and should be
positioned close together, running at or close to the floor level.
A.4.4 Equipotential Bonding
Bonding of all metallic components in the plasma cutting installation and adjacent to
it should be considered. However, metallic components bonded to the workpiece will
increase the risk that the operator could receive a shock by touching these metallic
components and the electrode at the same time. The operator should be insulated
from all such bonded metallic components.
A.4.5 Earthing of the Workpiece
Where the workpiece 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 workpiece to earth may reduce emissions in some, but not
all instances. Care should be taken to prevent the earthing of the workpiece
increasing the risk of injury to users, or damage to other electrical equipment. Where
necessary, the connection of the workpiece to earth should be made by a direct
connection to the workpiece, but in some countries where direct connection is not
permitted, the bonding should be achieved by suitable capacitance, selected
according to national regulations.
A.4.6 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.
This information is subject to the controls of the Export Administration Regulations [EAR]. This information shall not be provided to
non-U.S. persons or transferred by any means to any location outside the United States contrary to the requirements of the EAR.
Page 117 of 118
FineLine 300HD Plasma System