Most hoist electrical calls come too late — the lift is already on the floor. The nameplate questions, the dedicated circuit, and the one decision that has to happen before the concrete.
Most hoist electrical calls come too late. The lift is on a truck, or already bolted to the floor, and somebody has worked out that the receptacle on the wall is not going to run it. At that point the options are narrower and more expensive than they were a month earlier.
None of this is complicated work. It is just work that wants deciding before the hoist shows up, and in one specific case before the concrete goes down.
Before anything else, find the data plate on the power unit — not the brochure, not the seller’s listing, the plate on the motor.
What matters on it:
A photo of that plate answers most of the questions anyone will ask you, and it is the single most useful thing to send before a site visit.
This is the most common surprise, and it happens constantly with used lifts bought at auction or out of a closing shop.
It is solvable — usually with a drive, sometimes with a rotary converter, occasionally by changing the motor, and best of all with a real three-phase service if the utility can give you one. Which route makes sense depends on how many other machines you have and what your existing service can carry. That decision is worked through in three-phase equipment in a single-phase shop.
What matters here is timing: find out before you buy, not after. Five minutes with the nameplate changes which hoist you should be bidding on.
If the hoist is in-ground, or if the supply is going to run under the slab, the electrical has to be planned and roughed in before the pour. After the concrete is down, the options are surface conduit, a trench and a patch, or overhead.
Even with a surface-mounted two-post lift, this is worth thinking about early. Running power overhead to a drop at the column is tidy and keeps conduit out of the way of a floor that gets washed, swept and driven on. Running it along the floor is the thing that gets damaged.
If you are building a shop, adding a bay, or repouring a floor, that is the moment to decide where every hoist will ever go — including the one you are not buying yet. Conduit in a slab is cheap. Conduit through a slab is not.
A hoist gets its own circuit, sized to the nameplate. It does not share one with the compressor, and it does not run off a general-purpose receptacle because one happened to be close.
It also needs a disconnecting means, and where that goes matters in practice as much as in code. A disconnect within sight of the equipment is a common requirement and a sensible one — anyone working on the lift wants to be able to see that it is off. Requirements vary with the installation, so it is worth confirming against the current Canadian Electrical Code and the authority having jurisdiction rather than copying whatever the last shop did.
Placement also wants thinking about: somewhere reachable without walking under a raised vehicle, and not somewhere a door or a parked car blocks.
A hydraulic lift power unit is an intermittent-duty motor. It runs hard for a short burst, then sits. That duty cycle affects how the circuit and the protection should be set up, and it is why a hoist motor behaves differently from, say, a compressor on the same nameplate amps.
Two things worth knowing once it is wired:
Some lifts arrive with a cord and plug fitted, which makes them look like they just need an outlet. Whether that is the right arrangement depends on the unit, the location and what the manufacturer specifies.
If it is going to be cord-connected, the receptacle has to be the right configuration and rating for the load, on its own circuit, and positioned so the cord is not run across a floor that vehicles drive over. A cord lying where tires cross it is a problem you will have again.
Put a vehicle up on a hoist and it shadows the bay underneath. Lighting that was fine for working on a car on the floor is frequently not fine for working under one at head height.
Worth sorting at the same time, because the conduit is already open and the bay is already down:
Bay lighting generally is covered under commercial lighting.
Worth being clear about, because it causes confusion on scheduling.
The hoist installer handles the lift itself — anchoring, shimming, levelling, cable and hydraulic routing, safety locks and the commissioning and certification of the lift as equipment. Grasse Electric does the electrical side: the circuit, the disconnect, the connection to the power unit, controls wiring and rotation, and the lighting and receptacles around the bay.
Those two trades need to turn up in the right order. Power roughed in and terminated before the installer needs to run it, with the final connection made once the unit is set.
A new circuit and disconnect for a hoist is installed electrical work and generally requires a permit, with inspection by the authority having jurisdiction. That is routine rather than an obstacle, and it is worth asking about at the quoting stage rather than at the end.
Usually not. Most lifts need a dedicated circuit sized to the nameplate, and a general-purpose receptacle shared with other loads is not that. Some smaller single-phase units are cord-connected by design, but that still means a properly sized circuit and the right receptacle rather than whatever is already on the wall.
Yes, sized to the nameplate rather than to what is spare in the panel. Sharing with the compressor is a reliable way to get nuisance tripping the first time both run together.
Check rotation first on a three-phase unit. A pump running backwards makes the right noise and builds no pressure, and it is a two-minute fix rather than a new power unit.
No, but it changes the plan. Lifts are commonly built for 208 or 240, so a 600V shop usually means a transformer to feed the hoist circuit. Better to know that at the quoting stage than on install day.
That is the ideal time, and it is the visit that saves the most money. Conduit placed before a pour costs a fraction of getting power to the same spot afterwards.
If you have a hoist on order, one sitting in crates, or a shop floor about to be poured, send the nameplate photo and where it is going. You will get a straight answer on what the circuit needs to be and what has to happen before the lift arrives.
Call 403-872-8698 or send the details through the service request form.
Related work is covered under equipment and machine wiring, panels and equipment power and automotive and equipment shops.
Grasse Electric serves Red Deer, Red Deer County, Blackfalds, Sylvan Lake, Penhold, Springbrook, Innisfail, Lacombe, Ponoka and Morningside.
Written by Todd Grasse, Red Seal Journeyman Electrician, Grasse Electric — Red Deer, Alberta. Published October 20, 2026.
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