CAA Habitation recommendedCommercial and industrial · Master electricians
Commercial and industrial electrician
Shops, offices, warehouses and plants: we do commercial and industrial electrical work, especially meter stacks and switchgear.
Free written quote
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In short
STM-Électrique and businesses
STM-Électrique is a firm of master electricians based in Mirabel, holding RBQ licence 5815-0137-01 and a member of the CMEQ. It works for residential and commercial customers, and also does industrial work. For businesses, we especially do meter stacks and switchgear. Our warehouse is in Laval and our offices are in Mirabel.
What we do for shops, offices, warehouses and plants
The electrical work of a commercial or industrial building, from the service entrance to the circuits of a unit:
- Meter stacks: replacing or expanding them, in a commercial or mixed-use building.
- Switchgear: the building’s main disconnect and distribution.
- Service entrance and capacity upgrades.
- A generator for the equipment that must not stop.
- Equipment circuits, unit lighting, workshop sub-panel.
- EV chargers, panels, lighting and emergency repairs.
Meter stacks and switchgear
In a mixed-use building, apartments and shops can each have their own meter. The most common business rate, Rate G, applies below 65 kW of minimum billing demand; it suits about 90% of Hydro-Québec business customers.
Above 200 A at 347/600 V, or 320 A at 120/240 V, the meter is connected to transformers, housed in a transformer cabinet for Hydro-Québec’s exclusive use or in a metal-enclosed substation. The master electrician installs the cabinet and the conduits; Hydro-Québec supplies and connects the meters and the transformers.
The details: meter stack in a commercial building and commercial and industrial switchgear. For an apartment building: meter stack replacement and apartment building switchgear.
A generator for a business
For a business, an outage costs lost stock and closed hours. The generator backs up what must not stop: walk-in cooler, alarm system, workstations.
The gas part is done by a licensed gas contractor; we coordinate and do all the electrical part.
The details: commercial and industrial generator installation.
Voltage, service request and shutdown: what Hydro-Québec requires
At low voltage, Hydro-Québec offers 120/240 V single-phase or 347/600 V three-phase. It is the master electrician who submits the service request, then the declaration of work.
Transformer-rated metering is only ever reconnected by Hydro-Québec, never by the electrician: Hydro-Québec sets the shutdown date with us. For a business or a plant, shutting down switchgear or a meter stack usually takes about 24 hours with us.
Laval, Montréal, the North Shore and the South Shore
We work in Montréal, in Laval, on the North Shore and on the South Shore. Our warehouse is in Laval and our offices are in Mirabel.
Commercial electrician in Laval and commercial electrician in Montréal. For a home: electrician in Laval, electrician in Montréal, electrician on the South Shore (in French).
Your city is not on the list? Leave your contact details and the team will confirm whether we can travel to you.
How a commercial project works
- The quote is written and free; it usually arrives within 7 days.
- Requests to Hydro-Québec are filed by the master electrician.
- If we find something along the way, we call you before going any further.
- Our work is guaranteed for 1 year, parts and labour.
Commercial and industrial electrician: your questions
Do you work on commercial and industrial buildings?
Yes. Besides homes, we work for shops, warehouses and plants.
What licence is needed for electrical work in a business?
A contractor’s licence that includes subclass 16, Electrical contractor. STM-Électrique holds RBQ licence 5815-0137-01 and is a member of the CMEQ.
Can a shop have its own meter in a mixed-use building?
Yes: each unit can have its own meter, which is called separate metering. A unit separated from its neighbours by fire walls can even count as a separate building.
How long will we be without power?
For switchgear or a meter stack in a business or a plant, plan on about 24 hours with us, as a rule. In an apartment building, it is usually about 6 hours.
How do I get a quote?
Fill in the form at the bottom of the page or call 438 542-7304. For a commercial project, the quote usually arrives within 7 days.
Get a quote: commercial or industrial project
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Commercial and industrial
A commercial or industrial project?
A free written quote.