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BEWARE OF ELECTRICAL CABLE ABOVE
• Do not let the Machine contact with electrical cables above.
High voltage cables may inflict electrical shock by mere
approaching.
• Persons who sling are likely to suffer electrical shocks.
Always observe followings to prevent accidents.
• If the boom or the wire ropes may contact an electrical cable in the
workplace, consult the electricity company and make sure that the
measures (measures for instance placement of a guard personnel
or application of wrap tubes and warning tags to the electrical
cable) stipulated by the related regulations are taken before
starting work.
• Put on rubber soled shoes and rubber gloves, and be careful that
the body parts unprotected by rubber or other insulation do not
contact the wire rope or the Machine frame.
• Place a guide and let him/her watch so that the boom, wire rope or
Machine frame does not go near the electrical cable too much.
Before doing so, decide the emergency signs and other
necessities.
• Ask the electricity company for the voltage in the electrical cables
in the working site.
• Ensure the offset distances (safe distance) shown in the following
table between the boom/Machine frame and electrical cables.
Voltage of
Electrical Cable
Minimum Safe
Distance
Low voltage
(Distribution line)
100･200V
2m
6,600V 2m
Special
(Transmission
line)
22,000V 3m
66,000V 4m
154,000V 5m
187,000V 6m
275,000V 7m
500,000V 11m
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