What is an arc-flash boundary?

The approach limit distance within which inadvertent movement exposes personnel to increase ris due to electrical arc-over potential.

The approach limit distance from energized electrical equipment within which a person is considered to be exposed to full circuit voltage.

The approach limit distance within which a person could receive a second-degree burn in the event that an electrical arc flash were to occur

The distance within which qualified personnel can safely perform bare-handed work on exposed energized electrical equipment operating at 50 volts or more.