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If you’re working on a project that involves cranes, dump trucks, boom trucks, ladder trucks, bucket trucks, scaffolds, ladders or antennas, you will likely be working close to overhead powerlines. Contact with a live powerline can cause severe injuries, and in some cases, death.

If you’re working near overhead powerlines, you must do the following:


Call Toronto Hydro at 416.542.8000 (press 4) for more information about having your powerlines de-energized (power temporarily cut off) or relocated/removed.

Make the area safe. It’s the law.

The Construction Projects Regulation (O. Reg. 213/91) under the Occupational Health and Safety Act (Ontario), states that it is the constructor’s responsibility to assess hazards and ensure everyone on the work site adheres to the safe limits of approach for live lines. Otherwise, your work site could be shut down. A constructor may be a property owner, contractor or other party. Should an injury occur, you could be held liable. Toronto Hydro is not responsible for the safety of the work site or the workers on site. It’s important to survey your work site well in advance. Before you start any construction project, review the job with your contractors and point out the location of all overhead and underground powerlines within or near the work area.

Did you know?

 A signal person must be available    Devices and signs must be posted
 A signal person must be on hand to assist the operator whenever equipment such as cranes, hoisting devices, backhoes, power shovels or other vehicles are near overhead powerlines.        

You must ensure that adequate warning devices are visible to equipment operators and must be positioned in the vicinity of the hazard to warn them of the potential danger of overhead lines. Operators must be provided with written notice of the hazard before they commence work. Warning signs must also be posted at the operator’s station.

Transformers and easements

Call before you dig - it's the law

Transformer clearance – No obstructions should be built or
planted within three metres (10 feet) of electricity transformers. This
would hinder quick and safe access to the unit during an

Easements – Toronto Hydro has the right to access a homeowner’s
property where its electrical equipment is located for the purposes
of maintenance and repair work. If you plan to install a swimming
pool, plant a tree, build a garden shed or build an addition to your
home, please let us know. Our Legal Services staff at 416.542.8000 (press 4)
will be pleased to advise you of any easements on your property.

Before starting any excavation work, you must call 1.800.400.2255
to determine the location of underground services. This free
service is open 24 hours a day. For more information, visit