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Figure 1.1 - Working on low voltage energized equipment

2. Know the system
Accurate, up-to-date information should be available to those
who work on the system. This means that you should know all
equipment installed according to the valid documentation
(technical specifications, single line diagrams, wiring diagrams,
block schemes etc.).
Be careful, sometimes equipment stated in documentation can
differ from the one installed on site – due to the replacing of old
(damaged) equipment with the new with similar characteristics.
3. Limit the exposure
Have live parts exposed for as little time as necessary. This
does not mean that you should work hastily. Be organized so that
the job can be done efficiently.
4. Cover exposed live metal
Use insulating barriers or shields to cover live parts. Plexiglas
plates can be useful.
5. Cover grounded metalwork
Grounded metal parts should be covered with insulating
material as much as possible. Very important.

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