Page 6 Mast Series - Operator’s Manual
April 2021Section 4 - Hazards and Safety Rules
Hazards
Electrocution Hazard
This machine is not electrically insulated and will not provide protection from contact with or proximity
to electrical current.
Maintain safe distances from electrical power lines and apparatus in accordance with applicable
governmental regulations and the following chart.
Voltage
Phase to Phase
Minimum Safe Approach Distance
0 to 300V Avoid Contact
300V to 50kV 10 ft 3.05 m
50kV to 200kV 15 ft 4.60 m
200kV to 350kV 20 ft 6.10 m
350kV to 500kV 25 ft 7.62 m
500kV to 750kV 35 ft 10.67 m
750kV to 1000kV 45 ft 13.72 m
Keep away from the machine if it contacts energized power lines. Personnel on the ground or in the
platform must not touch or operate the machine until energized power lines are shut off.
Do not use the machine as a ground for welding.
When working in the area of energized conductors the user shall direct and the operator shall comply
with the requirements to:
Stay at least 10 feet away from power lines with any part of their body, conductive object or any
part of the MEWP.
If work requires working nearer than 10 feet, stop and consult a qualified person with respect
to electrical transmission and distribution to have appropriate measures taken (such as de-
energizing and grounding).
If there is a question that the power lines may carry more than 50kV, consult a qualified person
with respect to electrical transmission and distribution before proceeding.
If working or approaching closer than explained above, it shall only be done by a qualified
person with respect to electrical transmission and distribution. Only qualified persons may
work on electric circuit parts or equipment that has not been de-energized. Such persons shall
be capable of working safely on energized circuits and shall be familiar with the proper use
of special precautionary techniques, personal protective equipment, insulating and shielding
materials and insulated tools.
a.
b.
c.
d.
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