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Safety
Introduction
In addition to the High Voltage Equipment Personnel Operating Guidelines given in this chapter,
included by reference are the following pertinent sections of the International Standard EN60215,
Safety Requirements for Radio Transmitting Equipment:
•
Appendix D, Guidance on Assessing the Competence of Personnel for Designation as
Skilled, and also Sub-clause 3.1 of the Standard.
•
Appendix E, Guidance on Safety Precautions to be Observed by Personnel Working on
Radio Transmitting Equipment, and also Sub-clauses 3.2, 3.7, and 22.1 of the Standard.
High Voltage Equipment
Personnel Operating Guidelines
This guideline document presents operating practices for operators and technicians who work
with high voltage equipment. In the context of this discussion any voltage that is lethal is viewed
as "high voltage." Therefore, even prime power (115 to 440VAC) is dangerous because prime
power potentials have been known to cause death or injury.
Electrical circuits operate quickly and do not allow a careless individual a second chance. When
dealing with high voltage, the results are very consistent and predictable and hazards associated
with high voltage are always present. The fact that the control switch says OFF does not mean
you are safe.
Note: The guidelines presented in this chapter are not academic. They are
based on the experience of engineers and technicians who have years of
experience with high voltage circuits.
When is Voltage "High"?
As stated earlier, any voltage that can kill you should be treated as high voltage. Voltages
associated with prime power generally do not jump the air gap between people and the
equipment. Usually exposed circuit elements such as a terminal, bare piece of wire, or some non-
insulated surface must be touched.