Warehouse and High Bay LED Lighting in Canada: Requirements and Light Levels

Most warehouse lighting quotes start with a fixture. A 150 W LED high bay replaces a 400 W metal halide, the wattage difference is multiplied by operating hours, and a payback number appears at the bottom of the page. That arithmetic is easy. It is also why a lot of retrofits land with the light in the wrong places: bright pools under every fixture and dark rack faces between them, glare in a forklift operator's line of sight, or a tidy even level across a floor plate where the packing benches needed three times as much.

Lighting a warehouse is a light level, uniformity and mounting height problem first. The fixture is what you choose once those three are settled. This article covers what Canadian rules actually require, what the recommended light levels are and where they come from, how mounting height changes the design, and what a contractor needs from you before a high bay LED quote means anything.

Warehouse lighting requirements in Canada: what the law actually says

Search warehouse lighting requirements and almost every result quotes OSHA. OSHA is a United States agency and its standards do not apply in Canada. Here is the Canadian picture.

Federally regulated workplaces: a real lux table

The Canada Occupational Health and Safety Regulations (SOR/86-304), made under Part II of the Canada Labour Code, set minimum average lighting levels by area. Schedule II, referenced by section 6.5, covers industrial areas, and item 3 is titled "Loading Platforms, Storage Rooms and Warehouses":

Item 6 of the same schedule covers the circulation routes through a warehouse:

Both tables are reproduced from Schedule II of the Canada Occupational Health and Safety Regulations.

These are minimums, not design targets, and they bind federally regulated workplaces. In a warehousing context that means operations such as interprovincial and international trucking terminals, rail, air and marine freight facilities, ports, grain elevators and federal Crown operations. If your facility is provincially regulated, Schedule II does not apply to you as law. It is still the most specific lighting table any Canadian regulator publishes, and it is a defensible benchmark to design against.

Ontario: a duty with no number

For a provincially regulated Ontario facility, the requirement is qualitative. O. Reg. 851 (Industrial Establishments) under Ontario's Occupational Health and Safety Act, section 21, reads in full:

There is no lux figure anywhere in it. Notice what it does name: shadows and glare. Those are uniformity problems, not quantity problems, and a layout can fail on both while hitting its average target comfortably.

British Columbia is the outlier among the provinces in setting specific levels, in section 4.65 of the BC Occupational Health and Safety Regulation. Most other jurisdictions take Ontario's approach.

So outside federal jurisdiction, the enforceable Canadian requirement gives you a duty and no target. The target has to come from recommended practice.

What about the OSHA warehouse lighting requirements everyone quotes?

Worth knowing where those numbers come from, because Canadian facilities are often handed them by suppliers.

That is the whole of it. The often-quoted "OSHA warehouse lighting requirement of 5 foot-candles" is a construction standard from another country, and it is not a design target in either.

The light levels to actually design to

The Illuminating Engineering Society is where the real numbers live. Its warehouse-specific guidance, long published as IESNA Design Guide DG 2-92 and cited in the Teamsters' warehouse illumination guidance, sets levels by activity:

The current standard to design against is ANSI/IES RP-7-21, Recommended Practice: Lighting Industrial Facilities, published by the Illuminating Engineering Society. It sets recommended maintained illuminance by task along with uniformity criteria. Design against the current edition rather than a range quoted secondhand, because those ranges circulate stripped of the task definitions that give them meaning.

For a free Canadian cross-reference, the Canadian Centre for Occupational Health and Safety publishes an illumination table drawn from the IESNA Lighting Handbook, CSA Z412:24 and the BC OHS Regulation:

The levels above are from the CCOHS lighting ergonomics guidance.

A single warehouse routinely spans four of those rows. Bulk storage a forklift passes through twice a shift, a pick module where staff read small labels, a packing bench, a receiving dock and a QA table are five different targets under one roof. Designing to one average across the whole floor plate is how a building ends up over-lit above the racking and under-lit at the bench.

One conversion worth keeping handy: 1 foot-candle is about 10.76 lux. North American product literature quotes foot-candles, Canadian occupational guidance quotes lux, and competing quotes get compared without either being converted more often than you would expect.

How to measure the light levels you have now

Before anyone models what you should have, measure what you have. The federal regulations set out a method that is worth copying whatever your jurisdiction, in section 6.3 of SOR/86-304: take four measurements at different places representative of the area, at 1 m above the floor, and divide the total by four.

Three practical notes. Take the readings zone by zone rather than building-wide, because a single average across a mixed-use building tells you nothing actionable. Take them with the racking loaded as it normally stands, since stock height changes the result. And take vertical readings on rack faces as well as horizontal ones at 1 m, because that is where the actual task is.

A lux meter or foot-candle meter costs very little. Bring the readings to any lighting conversation and you change it from a fixture pitch into a design discussion.

Uniformity is the number people actually notice

Average illuminance is the figure in the quote. Uniformity is the figure your staff experience.

A layout can hit a 200 lux average and still be unpleasant to work in, if most of that average comes from a hot spot directly under each fixture while the aisle centres sit at 90 lux. The eye adapts to the brightest thing in view, so a wide gap between the bright patch and the dim one makes the dim one read as darker than a meter says it is. That is the "shadows and glare" clause in O. Reg. 851 restated in photometric terms.

RP-7 sets uniformity criteria alongside illuminance, expressed as ratios between the maximum, average and minimum values across the calculation grid. Take the target ratio for your specific space type from the current edition rather than from a rule of thumb, because the appropriate ratio is not the same for an open floor, a wide aisle and a very narrow aisle.

Two things drive uniformity in a warehouse more than anything else.

Racking blocks light. Photometrically, an empty warehouse and the same warehouse holding 9 m of racking are two different buildings. If a layout was modelled on an empty shell, or on a rack plan that has since changed, the aisles will be darker in practice than the report predicted. Any model you are handed should be built on the current rack layout, rack heights and aisle widths, and re-checked before any reconfiguration.

Racking is a vertical task. Staff read labels on rack faces, not on the floor. Horizontal illuminance on the standard calculation plane 1 m above the floor says very little about the face of the third beam level. Aisles are usually solved with linear fixtures aligned along the aisle rather than round high bays on a square grid, because a linear distribution can be shaped to put light on both rack faces instead of into the aisle floor.

How high do high bay lights need to be?

Mounting height sets the fixture family, the beam distribution and the fixture count.

By common industry convention, high bay fixtures are specified above roughly 6 m (20 ft) of mounting height, and low bays below it. That is a convention rather than a code requirement, and there is no regulated minimum height for a high bay fixture. The useful version of the question is not what category a fixture falls into but this: at this mounting height, what beam angle puts light on the task without spilling it across the racking tops and the roof deck?

Higher mounting means a narrower beam. Illuminance falls with the square of the distance, so a fixture at 12 m has to deliver roughly four times the intensity of one at 6 m to produce the same level on the floor, and a wide distribution at that height sends a large share of its output somewhere other than the work plane. Lower mounting means a wider beam and tighter spacing, or the floor scallops between fixtures.

Height also decides how the room gets maintained. At 12 m, every fixture change is a lift, a permit and often a pause in operations. That is why rated life and lumen maintenance data (LM-80 test results and the TM-21 projection built from them) carry more weight in a high bay than anywhere else in the building, and why the warranty term is a real cost input rather than a line in a brochure.

How far apart should high bay lights be?

Not at whatever spacing the metal halide fixtures were on.

Every DLC listed fixture publishes an LM-63 photometric file, and that file carries a spacing criterion. Multiplied by the mounting height above the work plane, it gives the maximum spacing at which that particular distribution still overlaps evenly with its neighbour. A fixture with a spacing criterion of 1.2 mounted 6 m above a 1 m work plane tolerates roughly 6 m between fixtures. Change the distribution and that number changes with it.

Reusing the old grid one fixture for one fixture is the single most common reason a technically correct LED retrofit looks patchy. The fixture being replaced had a different distribution, usually a different beam spread, and frequently a different mounting height as well. The grid was right for the old optic and is not automatically right for the new one.

How many high bay lights do I need?

Online calculators answer this with lumens divided by area, and that will give you a fixture count that is wrong in most real warehouses. The lumen method assumes an empty rectangular room with uniform reflectances and no obstructions. A warehouse is a room full of tall, dark, light-absorbing obstructions arranged in rows.

The answer comes out of a photometric model built on your actual rack layout, aisle widths, mounting height, deck height, surface reflectances and target level per zone. What you should receive is not a fixture count but a calculation grid: average, minimum and maximum illuminance per zone, the uniformity ratios, the fixture schedule with distribution type and mounting height, the controls strategy, connected load before and after, and the assumptions behind every number in the savings case.

The conditions that quietly rule fixtures out

Light levels and layout narrow the field. These usually eliminate what is left.

How to scope the retrofit

If you want quotes you can actually compare, put the same eight inputs in front of every bidder.

Where Think Green fits

Think Green Solutions delivers LED lighting and controls as fully engineered projects for commercial and industrial facilities, from a Cambridge, Ontario base. Warehousing and logistics and industrial and manufacturing are two of the six facility types we design for.

A lighting energy audit is the standalone first step: an on-site fixture inventory with wattages and operating conditions, a review of existing light levels and light quality, a savings, payback and ROI model, recommendations for LED and controls, and an initial review of available lighting incentives. You can commission it on its own and take the report wherever you like.

From there, projects and solutions covers delivery: photometric design and layout optimisation, fixture supply, incentive applications from eligibility review through to final rebate collection, installation by licensed electricians we manage end to end, and commissioning with post-installation support.

On the fixtures themselves, a 10-year limited warranty covers LED panels, high bays and low bays, and a 5-year limited warranty covers tubes, strips, wall packs and exterior fixtures. Every fixture carries a 5-year colour stability and lumen output guarantee. Full terms are on the warranty and performance guarantee page.

If you are weighing a warehouse or high bay retrofit, the useful first conversation is about zones, mounting heights and what your staff actually need to see. Get in touch to book a lighting energy audit.

Frequently asked questions

What are the warehouse lighting requirements in Canada?

It depends on jurisdiction. Federally regulated workplaces are covered by the Canada Occupational Health and Safety Regulations (SOR/86-304). Schedule II sets minimum average levels including 250 lux where packages are frequently checked or sorted, 150 lux on loading docks, 75 lux where goods of different kinds are stored, and 30 lux for bulk storage of a single kind of goods. Provincially regulated Ontario facilities fall under O. Reg. 851 section 21, which requires adequate artificial lighting with shadows and glare reduced to a minimum but sets no lux figure. British Columbia sets specific levels in section 4.65 of its OHS Regulation. Not sure which regime applies to your facility? The team at Think Green Solutions can confirm it as part of a lighting energy audit.

What are the OSHA warehouse lighting requirements?

OSHA's construction standard, 29 CFR 1926.56 Table D-3, sets 5 foot-candles as the minimum for indoor warehouses, corridors, hallways and exitways in construction work areas. OSHA's general industry standards at 29 CFR 1910 contain no general illuminance minimum for a warehouse, apart from 1910.178(h)(2), which requires auxiliary directional lighting on a powered industrial truck where general lighting is below 2 lumens per square foot. Both are United States standards and neither applies to a Canadian facility.

How many lux does a warehouse need?

It depends on the task, not the building. IES warehouse guidance sets about 50 lux (5 fc) for inactive storage, 100 lux (10 fc) for active use with bulky items and large labels, and 300 lux (30 fc) for active use with small items and small labels. CCOHS lists 100 to 200 lux for truck loading and active bulk storage and 200 to 500 lux for tasks of high contrast or large scale. Most warehouses need several of those targets in different zones. ANSI/IES RP-7-21 is the standard to design a specific facility against. Talk to the experts at Think Green Solutions to have each zone assessed and the right target set for it.

How do I measure foot-candles or lux in my warehouse?

Use a lux or foot-candle meter and follow the method in section 6.3 of the federal regulations: take four measurements at different places representative of the area, at 1 m above the floor, and divide the total by four. Do it zone by zone rather than building-wide, take the readings with the racking loaded as it normally stands, and take vertical readings on rack faces as well, since that is where the task actually is. One foot-candle is about 10.76 lux. Or have the experts at Think Green Solutions take the readings for you during a lighting energy audit.

What is the difference between a high bay and a low bay light?

Mounting height and beam distribution. By common industry convention, high bays are specified above roughly 6 m (20 ft) and low bays below it. There is no regulated minimum height. The practical difference is that greater height calls for a narrower, more concentrated distribution, because illuminance falls with the square of the distance from the fixture to the work plane.

How far apart should high bay lights be spaced?

Take the spacing criterion from the fixture's LM-63 photometric file and multiply it by the mounting height above the work plane. That gives the maximum spacing at which that distribution still overlaps evenly. Do not reuse the spacing of the fixtures being replaced, because a different optic at the same spacing produces a different pattern on the floor. This is a common cause of patchy results after an otherwise sound retrofit.

How many high bay lights do I need for my warehouse?

More than a lumens-divided-by-area calculator will tell you, and arranged differently. Those calculators assume an empty rectangular room, and a warehouse is a room full of tall obstructions in rows. The count should come from a photometric model built on your actual rack layout, aisle widths, mounting height, deck height and target level per zone. Ask the team at Think Green Solutions to build one for your facility.

Do LED high bays qualify for Canadian utility rebates?

Most Canadian utility incentive programs, including Ontario's Save on Energy Retrofit Program, require fixtures listed by the DesignLights Consortium or certified to ENERGY STAR, and most require pre-approval before installation starts. Confirm eligibility against the current program requirements before ordering. Think Green Solutions manages eligibility reviews and rebate applications end to end, so speak to our team before you order.

Dennis Devey

Dennis Devey is the founder of Think Green Solutions, a commercial and industrial LED lighting retrofit company in Cambridge, Ontario, and serves as its VP of Sales and Strategy. Dennis has worked in Ontario's commercial and industrial lighting sector since 2010. He works directly with facility operators across manufacturing, warehousing, retail and municipal sites, walking buildings to assess existing fixtures and building the savings case before a project starts. His focus is the part of an upgrade that decides whether it pays back: fixture selection, warranty terms, photometric design, and the utility and government incentive applications that reduce what a project costs.

View all posts by Dennis Devey