| space around energized parts where reduction of electrical risk is managed by restricting access to skilled persons only, by maintaining the appropriate air distances to parts at a different electric potential and by using tools for live working Note 1 to entry: The distance from the energized parts to the outer boundary of a live working zone is greater or equal to the sum of the electrical distance appropriate for the maximum nominal voltage and of the selected ergonomic distance. Note 2 to entry: The live working zone and the specific precautions that apply are generally defined by national or company regulations. Note 3 to entry: This entry was numbered 651-01-06 in IEC 60050-651:1999. It has been modified to ensure clarification of the concept of live working.
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