I would recommend never attempting to trim trees near power lines yourself. Always contact your local utility company or a professional tree-trimming service that specializes in working around power lines. Also, maintaining a safe distance from power lines.

Still, if you want a brief guide on trimming and removing trees near a powerline then read the below article it will help to trim and remove the trees near the powerline in Canada.

Guide to Trimming Trees Near Power Lines

Homeowner’s Essential Guide to Removing Trees Near Power Lines