Construction and Electrical Safety

Frequently Asked Questions

1. What should we watch for on future job sites?

   Make sure that the scheduled work will not require any person, load, equipment, mobile scaffolding or piece of machinery to come within 3 metres (10 feet) of overhead power lines. If there are power lines on or near the site, don't take any unnecessary risks: call Hydro-Québec immediately and it will determine whether the power lines are at a safe distance from the work area.

2. Which overhead power lines are really dangerous?

   All power lines are dangerous, but as a rule of thumb, the higher they are, the more dangerous they are. Running along the top of electric poles, above the transformers, are medium-voltage lines (751 to 44,000 volts). They are not insulated. Contact with these wires will cause serious injury that may result in amputation or death.

3. What if there is work to be done less than 3 metres from power lines?

   If the safety measures recommended by Hydro-Québec allow workers to come within 1.2 metres of live power lines (protected by a conductor cover), you must fill out the form.

4. Can we use scaffolding less than 3 metres from power lines?

   Yes. In such cases, Hydro-Québec will supply you with fiberglass scaffolding equipped with a protective barrier. The Hydro-Québec evaluator will refer you to the nearest distribution centre, where you will obtain the scaffolding free of charge upon presentation of your signed Hydro-Québec agreement.

5. If I see a worker being electrocuted by a power line or an electrified object, is it safe to touch him?

   Do not touch him or you will be electrocuted too! For a low-voltage line (less than 750 volts), cut the current at the master switch. For a medium-voltage line (751 to 25,000 volts), call Hydro-Québec. If the worker is lying on the ground, check to see whether any wires or live equipment are touching him. If not, you can provide assistance.