Ditch Witch JT100, Operator'S Manual

Page: 21 / 268

Safety - 20
JT100/JT100 All Terrrain Operator’s Manual
Driver/Loader Precautions
Near Electrical Power Lines
Never operate the driver/loader within 10’ (3 m) of electric power lines carrying up to 50 kV. Add 1’ (305
mm) of clearance for each additional 30 kV or less (see table on left). Follow OSHA or other guidelines for
working around power lines. Also observe minimum clearance requirements during transport (see table on
right).
Do not enter the danger zone (A), unless one of the
following conditions is met:
• An appointed person has confirmed that the electrical
distribution and transmission lines have been de-
energized and visibly grounded at the point of work.
• Insulating barriers (not a part of the attachment or
driver/loader) have been erected to prevent physical
contact with the lines.
Maintenance
• Before working on the driver/loader, lower boom to
the ground, turn driver/loader controls off and relieve
hydraulic pressure from circuits.
• Never weld, modify, or use unauthorized components
on driver/loader attachment. This will void any
warranty or liability, and driver/loader failure could result.
• Check swivel and shackle before each use for distortions or cracks.
• Stop all operations when cleaning, adjusting or lubricating the machine.
• Install all guards before returning driver/loader to service.
Do not get boom near power lines. Death or serious
injury will occur. Keep required distance between boom and power lines.
Use a spotter.
270-1983
Normal voltage
(phase to phase) Minimum operating
clearance required
up to 50 kV 10’ 3 m
51-200 kV 15’ 4.6 m
201-350 kV 20’ 6 m
351-500 kV 25’ 7.6 m
501-750 kV 35’ 10.7 m
751-1000 kV 45’ 13.7 m
Normal voltage
(phase to phase) Minimum transporting
clearance required
up to 0.75 kV 4’ 1.2 m
0.76-200 kV 6’ 1.8 m
50-345 kV 10’ 3.8 m
346-750 kV 16’ 4.9 m
751-1000 kV 20’ 6.1 m
unknown 20’ 6.1 m