Electrocution Hazard; Minimum Approach Distance (M.a.d.) - JLG 19AMI Operation And Safety Manual

Electrocution Hazard

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 (0.3m) additional clearance is required for every additional
30,000 volts or less.
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Table 1-1. Minimum Approach Distance (M.A.D.)
VOLTAGE RANGE
(PHASE TO PHASE)
Over 50KV to 200KV
Over 200KV to 350KV
Over 350KV to 500KV
Over 500KV to 750KV
Over 750KV to 1000KV
NOTE: This Minimum Approach Distance shall apply
except where employer, local, or governmental reg-
ulations are more stringent.
The minimum approach distance may be reduced if insulating bar-
riers are installed to prevent contact, and if 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 employer, local,
or governmental requirements for work practices near energized
equipment.
– JLG Lift –
SECTION 1 - SAFETY PRECAUTIONS
MINIMUM APPROACH
DISTANCE - Feet (m)
0-50KV 10 (3)
15 (5)
20 (6)
25 (8)
35 (11)
45 (14)
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