What CSA C282 means for emergency generators in Ontario buildings: who is responsible, the weekly to annual schedule, the annual load test and the log book.
CSA C282 is the Canadian standard for emergency generators in buildings. Ontario’s Building Code requires emergency generators to be installed and maintained to it, and the building owner is responsible for meeting it. In practice that means inspections and tests on a weekly, monthly, semi-annual and annual schedule, a full load test every year, and a permanent log book that an inspector can ask to see.
This guide explains what that means for a property manager, condo board, long-term care home or facilities team, in plain terms.
The full name of the standard is CSA C282, “Emergency Electrical Power Supply for Buildings”. It covers the generators that keep a building’s life safety systems running when the utility power fails, such as emergency lighting and the fire alarm system, and whatever else the building’s design relies on during an outage.
C282 sets rules for how the system is designed and installed, and for how it must be inspected, tested and maintained for as long as it is in service. That last part is the one that lands on the owner every week of the year.
If your generator is there because the Building Code required emergency power, C282 applies to it. That is common in high-rise residential buildings, hospitals, long-term care and retirement homes, schools, colleges and many government buildings.
If you are not sure how your generator is classed, your electrical engineer or inspector can confirm it. Many owners of generators that are not code-required still follow the C282 schedule, because it is a proven way to keep a standby generator ready to run.
The owner. The Electrical Safety Authority (ESA) says so directly in its Bulletin 2-22-3: the asset owner or agent is mandated to ensure conformance with CSA C282.
A service company does the work and keeps the records, but the obligation stays with the owner, or the property manager acting for them. That is why the log book matters so much: it is the owner’s proof that the work was done.
C282 sets out tasks at four intervals. The exact list depends on the edition your building follows and on your equipment, but the pattern is the same:
A visual inspection. The controller is in automatic with no alarms; fuel, oil and coolant levels are checked; the battery, battery charger and block heater are working; there are no leaks. Everything is written in the log book.
The weekly checks, plus a test run of the generator under load with the readings recorded.
A more detailed inspection and service by a qualified generator technician.
A full service and a full load test, with a written report.
If your building has trained staff who already do the weekly checks, the rest of the schedule can be covered by a service company. Our article on how often a standby generator should be serviced explains why each interval exists.
ESA’s bulletin notes that Table 5 of CSA C282 requires a full load test every year. This is the test that matters most, because a generator that starts and runs with no load tells you very little about whether it can carry the building.
The usual way to do it is with a load bank, a piece of equipment that creates an artificial electrical load. The generator is stepped up to full load and watched at every stage, while the building stays on utility power the whole time. A full load test also burns off the unburned fuel and carbon that build up in a diesel engine that only ever runs lightly loaded (often called wet stacking). See our page on generator load bank testing for how a test runs.
C282 requires a permanent log book of the work performed, and ESA’s Rule 2-003 makes it the owner’s responsibility to keep a record of electrical installations. A useful log entry shows:
Keep the log book on site, where an inspector can see it.
Not for routine testing. Bulletin 2-22-3 says a notification of work is not required for the inspection and testing of emergency generators to C282, as long as an accurate log book is available to ESA on request. That includes:
A notification of work is required for repairs, replacements or alterations to the electrical installation, such as replacing or moving field devices or field wiring.
CSA has revised C282 several times, and the current edition is C282:24. The edition your building is held to depends on the Code that applies to it, so confirm it with your inspector or engineer before you set your schedule. A good service company works to the edition your building follows and notes it in the report.
The real risk is not the paperwork. It is a generator that fails on the one day it is needed, with residents in elevators or patients on equipment. The paperwork risk is real too: if an inspector asks for the log book and it has gaps, the owner has to explain them and put things right.
For emergency generators required by the Building Code, yes. The Code requires their installation and maintenance to conform to CSA C282, and the owner is responsible for it.
A full load test once a year, according to ESA Bulletin 2-22-3. The monthly test runs the generator under load as well, and a load test is a good idea after any major repair.
Yes, if they are trained to do them. C282 includes requirements for training the people who do the work. Many buildings have their own staff do the weekly checks and bring in a generator technician for the rest.
No ESA notification is needed for inspection and testing, including connecting a load bank, as long as the log book is kept. Repairs and replacements of wiring or devices do need one.
Record it in the log book and have it repaired before the next test. A failed test is the system doing its job: you found the problem on a normal day instead of during an outage.
GenWorx runs CSA C282 maintenance plans for buildings across the GTHA, from our base in Ajax. We cover weekly to annual visits on every make, including Cat, Cummins, Kohler, Generac and MTU, and every visit is written up in your log book. If your own team already handles the weekly checks, we build a plan that covers only the rest.
See how our generator maintenance plans work, or contact us to talk about your building.
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