Wiring detached shops and garages around Red Deer and Central Alberta: sub-feeds from the house or yard service, shop panels, receptacle and welder circuits, lighting, heaters, overhead doors, compressors and hoists. Both home shops and small commercial shops, done by a Red Seal Journeyman Electrician.
Getting power out there, and then making the building usable.
Underground feed from the house or yard service to the shop, sized for the load and for the distance, with a disconnect and a proper bonding arrangement at the building. The most common request, and the one most often undersized when it was done the first time.
A panel in the shop with room to grow, breakers labelled, neutral and ground separated as they should be in a subpanel, and a schedule that matches what is actually connected. See panels and equipment power.
Receptacles at bench height where you use them rather than behind the tool box, dedicated circuits for equipment that trips a shared one, GFCI where required, and enough of them that extension cords stop being the plan.
50 A and larger welder outlets, plasma cutter circuits and the conductor sizing behind them. Duty cycle matters here — a welder’s nameplate is not what it draws continuously, and sizing the circuit properly avoids both nuisance tripping and an overloaded feed.
LED fixtures laid out to light the bay and the bench, switched in sections, with fixtures rated for an unheated building where that applies. More on fixture choice under lighting and LED retrofits.
Unit heaters, construction-style heaters, in-floor heat circuits and thermostats. Heat is usually the largest load in a shop, so it drives the feeder size more than anything else does.
Power and control wiring for overhead door operators, safety eyes, wall stations and key switches, plus tracing why a door opener works from the remote but not the wall button.
Dedicated circuits, disconnects and starters for compressors and dust collectors, including three-phase units and their overloads. Related work is covered under motors and motor controls.
Power and disconnects for vehicle lifts and hoists in automotive and commercial shops, including feed sizing and control connections. Automotive-shop lift installation work is part of what gets done here regularly.
The single most common regret on a detached shop is a feed that was sized for what the building had on the day it was wired. A shop starts as lights and a few plugs. Then comes a heater, then a compressor, then a welder, then a hoist, and eventually the whole thing is being run off a feed that was never meant to carry it. Upsizing later means trenching again, which is the expensive part.
The wiring principles are the same, but the expectations differ. A home shop usually runs single-phase at 120/240, and the priorities are enough receptacles, good lighting and a feed that will not be a limit later. A small commercial shop more often has three-phase available, runs equipment that needs disconnects and starters, has staff who need clear labelling and lock-out points, and has more at stake when something stops. Both are normal work here, and they are covered alongside commercial electrical and automotive shops.
Tip: if you are trenching to a detached shop, put in a spare conduit alongside the electrical for data, a camera run or a future circuit. The trench is most of the cost, and it is only open once.
Equipment list, heat plan, how many people will work in there and what is realistically coming later. That determines the feed more than square footage does.
Feed sized and run, disconnect and shop panel installed, bonding sorted out properly for a detached building.
Lighting, receptacles, welder and equipment circuits, heaters, door openers and anything else on the list, run and terminated.
Everything tested, GFCI verified, rotation confirmed on three-phase equipment, panel schedule filled in and left in the panel.
It depends on the heat and the equipment, not on the size of the building. A shop with gas heat, lights, plugs and a small compressor needs far less than the same building with an electric unit heater and a welder. The other limit is the existing service — the shop feed comes off it, so a house with a modest service may cap what the shop can have. We look at both and give you a real number, plus what it would cost to go a size up while the trench is open.
For a light and a battery charger, people do it, but it is a poor arrangement and it is not something to build on. Cords run across a yard get damaged, they drop voltage badly over distance, and nothing with a motor in it is happy at the end of one. If the shop is going to get used, a proper feed is the right answer and it is usually less expensive than people assume.
Possibly, but do not assume it. Check what the welder actually draws at the setting you use, whether the circuit is shared with anything else, and whether the conductor is sized for the run. Putting in a larger breaker without changing the wire leaves the wire unprotected, which is not an option. The correct fix is often a dedicated properly sized circuit rather than a bigger breaker on the existing one.
For a detached building fed from another structure, yes — there needs to be a means of disconnect at the building, and the bonding has to be arranged correctly for a separate structure. This is one of the things most often done wrong in owner-wired shops, along with neutral and ground being tied together in the shop subpanel.
Yes, for a shop-sized building. Rough-in while the walls are open, then devices and fixtures after insulation and cladding. What is outside the scope is a large new-construction project needing a crew on site for months — this is an owner-operated business, so a single shop or garage fits and a subdivision does not.
Regularly. Acreage and farm shops are a normal part of the work, along with barns and outbuildings — see agricultural electrical. Service covers Red Deer, Red Deer County, Blackfalds, Sylvan Lake, Penhold, Springbrook, Innisfail, Lacombe, Ponoka and Morningside. If something has stopped working rather than being a new install, start with troubleshooting.
Call before the trench goes in, not after.
