JLG T500J Operator Manual - Manual (Page 18)

SECTION 1 - SAFETY
1-6 – JLG Lift – 3121197
• Maintain a clearance of at least 10 ft. (3m) between any part of
the machine and its occupants, their tools, and their equipment
from any electrical line or apparatus carrying up to 50,000 volts.
One foot additional clearance is required for every additional
30,000 volts or less.
• The minimum approach distance may be reduced if insulating
barriers are installed to prevent contact, and the barriers are rated
for the voltage of the line being guarded. These barriers shall not
be part of (or attached to) the machine. The minimum approach
distance shall be reduced to a distance within the designed work-
ing dimensions of the insulating barrier. This determination shall
be made by a qualified person in accordance with the employer,
local, or governmental requirements for work practices near
energized equipment
DO NOT MANEUVER MACHINE OR PERSONNEL INSIDE PROHIBITED ZONE (MSAD).
ASSUME ALL ELECTRICAL PARTS AND WIRING ARE ENERGIZED UNLESS KNOWN OTH-
ERWISE.
Table 1-1. Minimum Approach Distances (M.A.D.)
Voltage Range
(Phase to Phase)
MINIMUM APPROACH DISTANCE
in Feet (Meters)
0 to 50 KV 10 (3)
Over 50KV to 200 KV 15 (5)
Over 200 KV to 350 KV 20 (6)
Over 350 KV to 500 KV 25 (8)
Over 500 KV to 750 KV 35 (11)
Over 750 KV to 1000 KV 45 (14)
NOTE: This requirement shall apply except where
employer, local or governmental regulations are
more stringent.