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Grounding is especially required when:
• working close to electric power lines;
• working nearby powerful broadcasting plants such as radio, T.V., an so on
• working nearby electricity plants where high frequency is involved
• when a storm is approaching
Crane ground connection
DANGER
electrocution hazard
While grounding the crane, carefully follow the below mentioned instructions, in order to avoid
electrocution hazard
In order to avoid electrocution hazard the following tips must be followed:
• drive a metal rod, roughly 1.5 meter long, (5 ft.) in the ground, at least 1 meter (4 ft.) deep
• connect a power cable of minimum 16 mm
2
(0,025 sq. in.) cross section to the former rod. This linkage
must be made with a hose clamp or a vice.
• moisten the ground all around the rod to improve conductivity.
NOTE
Arrange the linkage for ground connection and the relevant symbol
• connect the remaining end of the cable with the point of connection indicated en on the crane base.
DANGER
electrocution hazard
The ground cable must be connected only on the indicated point on the crane base. Avoid any
linkage to screwed on parts of the crane, such as valves, cover plates, gearboxes, etc.
DANGER
electrocution hazard
Always ground the crane perfectly.
Load ground connection
In order to avoid the electrostatic charging of the load it is necessary to use:
• a metal rod having a good conductivity, with a length of 1.5 meters (5 ft.) roughly, to be driven into the
ground, at least 1 meter (4 ft.) deep.
• a power cable with a minimum cross section of 16 mm
2
(0,025 sq. in.).
• a second metal rod, having good conductivity and an insulating handle complying to the relevant safety
Regulations. This rod has to be used to touch the load.
• Then connect this cable to the ground rod on one side. Moinsten the ground all around the rod to
improve conductivity.
• Then connect the other side of the cable to the insulated rod. Both connections must be made using the
relevant vices or metal clamps as an alternative.
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