BEFORE you dig: Info-Excavation

In addition to power distribution equipment, there may also be underground equipment belonging to other public utilities, such as telecommunications, cable distribution, natural gas, sewers, etc.

BEFORE you install a pool, build a fence, plant trees or shrubs or carry out any underground work, find out what’s down there:

Fill out a locate request on the Info-Excavation Web site

Never dig around a pad-mounted transformer

Live cables are buried around the transformer: digging in this area can be dangerous! Grounding sets buried around the transformer could also be damaged if you dig: these grounds are required to make the equipment safe.

Grosse boîte rectangulaire (de 1,2 mètre sur 1,2 mètre environ) en métal de couleur verte, dotée de portes d’accès et qui est posée sur un socle en béton.

Clearance around a pad-mounted transformer

There must be a clearance of 1.5 metres on either side and behind a pad-mounted transformer. Do not plant any trees or shrubs in this area.

The branches and foliage of your trees and shrubs must not get within 60 centimetres of the transformer. This is the same clearance required for flower beds.

Be sure to maintain trees and shrubs planted close to the transformer on a regular basis so that they don’t become invasive over time.

Don’t put anything in front of a transformer

There must be a clearance of at least 4 metres in front of the transformer to allow for the opening of the doors and ensure the safety of the workers who carry out maintenance.

Hydro-Québec employees must be able to locate and access this equipment at all times for normal maintenance and emergency repairs.

Important : Never camouflage a pad-mounted transformer with vegetation or any sort of panel.

For more information, consult our brochure The right tree in the right place: The underground distribution system [PDF 3 Mb]

Joint-use enclosures: Example of a pad-mounted transformer with proper clearance.