When required to establish a means to warn of power line encroachment the following illustrates one method.
- Be equipped with a visual aid to assist in identifying the minimum clearance distance.
- Ensure that no part of the equipment, load line, or load (including rigging and lifting accessories), gets closer than 20 feet to the power line.
- Erect and maintain an elevated warning line, barricade, or line of signs, in view of the operator, equipped with flags or similar high-visibility markings, at 20 feet from the power line.
If the operator is unable to see the elevated warning line, a dedicated spotter must be used