There shall be a minimum 10-foot clearance between an energized high voltage distribution conductor and any part of a tree. Fast growth tree species will require a minimum of 15-foot clearance. Only OSHA 269-qualified employees may clear lines or trim trees within the minimum approach distance of 10 feet of energized lines.
Trees should be trimmed to the extent that the designated minimum clearance area will be kept free of new tree growth until the next scheduled trimming cycle. If advanced trimming cycles are needed for fast-growing tree species or where limited trimming is permitted by the tree owner, appropriate cost and records will be maintained by United Electric.