Repair shops, truck and trailer bays, heavy equipment shops, tire shops and wash bays. Hoists, compressors, welders and exhaust extraction all pull from a panel that was sized for whatever the building was before. The work happens around vehicles that are already in the air.
Independent repair shops, dealership service departments, truck and trailer shops, heavy equipment and ag equipment shops, tire shops, wash bays and quick-lube bays. What they share is a building where the electrical system has to survive a working floor: vehicles moving in and out, floors that get wet and oily, air lines and cords everywhere, and equipment that draws hard on start-up and then sits idle for an hour.
Shop electrical also has a layout problem that other buildings do not. Everything needs power exactly where a vehicle is going to be parked. Hoist power has to land at the column without a cord crossing the bay. Welding receptacles need to be reachable from where the work happens rather than where a panel happened to be installed. Drops need to hang clear of a raised hood and clear of a truck box. Getting this right is mostly about walking the bays and asking how the shop actually works, not about reading a drawing.
Grasse Electric is an owner-operated, licensed electrical contractor working across Central Alberta since 2018. Todd Grasse is a Red Seal Journeyman Electrician, and shop and garage electrical is regular work here — automotive-shop lift installation, bay lighting, exhaust-fan wiring and conduit, equipment power and the troubleshooting that goes with all of it.
The shop-floor calls that come in most often, and what is usually behind them.
No response at the control, or it lifts but will not lower. On the electrical side that is supply, disconnect, contactor, control circuit or a damaged control cable. Confirming which one separates an electrical repair from a hydraulic or mechanical one before parts get ordered.
A new or relocated hoist needs a dedicated circuit, a disconnect within reach, and the supply run so nothing is trailing across the floor. Automotive-shop lift installation is routine work, including coordinating with the installer on rotation and controls.
The shop compressor is the piece of equipment nobody notices until it stops. Starter contacts, overload settings, pressure switch, control voltage or a motor drawing unbalanced current are the usual suspects, and they are all testable.
Old fixtures, wrong mounting height, or lighting laid out for a building that has since been divided into bays. LED bay and high-bay lighting laid out for where technicians actually stand makes more difference than raw lumens.
Either the receptacle and circuit were never sized for that machine, or the connection has degraded from repeated plug cycles and heat. Welding receptacles take abuse, and a loose connection behind a cover plate shows up as an intermittent fault.
Reel-type extraction and bay exhaust fans get wired into whatever was nearby, then stop working when the switch, contactor or motor gives out. Exhaust-fan wiring and conduit is straightforward work and worth doing properly, because this is a system people rely on for air quality.
Water, soap and pressure destroy electrical devices that were not rated for it. Wash-bay high-bay lighting, wet-location devices and car wash controller repair are all regular calls, and the right fix usually involves upgrading the rating rather than replacing like for like.
Tire changers, balancers, presses and grinders get plugged into a circuit that already serves half the shop. Splitting loads onto dedicated circuits from the panel ends the nuisance tripping.
Every new machine needs a space and there are none left. That is a capacity and distribution question before it is a breaker question, and it is better answered before the next piece of equipment arrives.
The gear that fills a service bay and the power behind it.
Two-post, four-post and in-ground hoists: supply, disconnects, control circuits and the wiring for new or relocated units.
Compressor motor power, starters, control circuits and pressure switching, including three-phase units.
Welding receptacles, plasma and press circuits, and drops positioned where the work is done rather than where the panel is.
Exhaust extraction fans, make-up air and bay ventilation wiring, switching and conduit.
Pressure washers, wash-bay lighting, wet-location devices and car wash controller repair.
Panels, sub-panels, bay circuits, overhead drops and high-bay LED lighting laid out for the bays as they are used.
Shop work runs around vehicles, not the other way round. Before anything starts, the question is which bays can be cleared, for how long, and whether a vehicle currently in the air can be brought down. A bay with a truck on a hoist and the hood off is not a bay that can lose power on short notice, and planning around that is part of the job rather than an inconvenience.
For breakdowns, diagnosis comes first. Hoists and compressors in particular attract guesswork, because the symptom — nothing happens when the button is pressed — looks the same whether the cause is a contactor, a control wire or something entirely mechanical. Measuring at the disconnect, at the starter and at the control circuit settles it quickly and keeps you from buying a part you did not need.
For planned work like new equipment power, added bay circuits or a lighting upgrade, the walk-through matters more than the quote. Where the drops go, how high the lighting sits above a raised box, and which side of the column a disconnect lands on all determine whether the installation is comfortable to work with for the next ten years. Work can be staged bay by bay so the shop keeps running, and after-hours attendance is available at an additional charge with availability confirmed by phone. This is a one-electrician operation with service vehicles, a trailer and lift access, suited to service work and shop projects rather than large crewed new-construction builds.
Practical note: before ordering a new hoist or a larger compressor, have the available panel capacity checked. Equipment often lands on the floor before anyone confirms the shop can feed it, and the difference between a spare breaker space and an actual capacity problem is measured in weeks of delay, not minutes.
Yes. That means the supply circuit, a disconnect within reach of the unit, and the connection at the hoist, with rotation confirmed on three-phase units before it lifts anything. Mechanical assembly, anchoring and the certification or inspection the hoist manufacturer requires are handled by the lift installer, not by the electrical side.
Sometimes, but not usually first. Starter contacts, overload settings, control voltage and supply imbalance all cause the same symptom and are far cheaper to fix. Those get checked before anyone recommends a motor, because a motor is the most expensive guess available.
Most of the time, yes. Bay circuits and lighting can usually be worked one area at a time. Work at the main panel or on a shared feeder does need a planned shutdown, and that gets scheduled for a time that suits the shop rather than dropped on a Tuesday afternoon.
Yes, and the layout matters as much as the fixture. Lighting over the centre of a bay leaves the underside of a vehicle in shadow once it is up on the hoist, so fixtures usually want to sit along the sides of the bay rather than down the middle. That gets discussed on the walk-through.
The electrical side, yes — car wash controller repair, wash-bay lighting, equipment power and wet-location devices. Pumps, chemical systems and mechanical equipment servicing are for the equipment supplier.
Red Deer and Red Deer County, plus Blackfalds, Sylvan Lake, Penhold, Springbrook, Innisfail, Lacombe, Ponoka and Morningside. See the service areas page for the full list.
Tell us what the equipment does when you hit the button and we can narrow it from there.
