12.2 – Annex C – Limits of Approach

Observing a safe approach distance from exposed electrical conductors or circuit parts is an effective means of maintaining electrical safety.

As the distance between a person and the exposed energized conductors or circuit parts decreases, the likelihood of occurrence of an incident increases.

Determine the arc flash boundary. If the boundary is to be crossed, appropriate arc flash protection equipment should be used.

To cross the limited approach boundary and enter the limited space, a person should meet the following criteria:

a) be qualified to perform the job or task; and

b) be able to identify the hazards and associated risks with the tasks to be performed.

To cross the restricted approach boundary and enter the restricted space, qualified persons should

a) as applicable, have an energized electrical work permit approved by authorized management;

b) use PPE that is appropriate and rated for the voltage and energy level involved;

c) minimize the likelihood of bodily contact with exposed energized conductors and circuit parts from inadvertent movement by keeping as much of the body out of the restricted space as possible, using only protected body parts in the space to the extent necessary to accomplish the work; and

d) use insulated tools and equipment.