CAN CSA E598-2-2-98: Technical Requirements for Recessed Luminaires in Canada

Scope and Application

CAN CSA E598-2-2-98, titled Luminaires – Part 2-2: Particular Requirements for Recessed Luminaires, is the Canadian adoption of IEC 60598-2-2:1997. This standard specifies safety and performance requirements for recessed luminaires intended for indoor use in household and similar applications. It covers downlights, troffers, and other luminaires designed to be installed into ceilings, walls, or other cavities, including those that may be partially or fully covered by thermal insulation.

The document applies to luminaires for use with tungsten filament, tubular fluorescent, self-ballasted compact fluorescent, and LED lamps, where the lamp’s heat output and dimensions are compatible with the luminaire design. Luminaires for emergency lighting, outdoor recessed installations, or high-temperature industrial environments are explicitly excluded unless referenced by additional standards.

Category E in the CSA numbering scheme indicates that this standard belongs to the Electrical group, specifically covering lighting equipment. The standard is referenced by the Canadian Electrical Code (CE Code) and the National Building Code of Canada (NBC) for ensuring safe integration of recessed luminaires into fire‑rated and non‑fire‑rated constructions.

Tip: When selecting recessed luminaires for a project, always verify that the product bears a certification mark from an accredited body (e.g., cCSAus, CSA, or ETL) to confirm conformity with CAN CSA E598-2-2-98 and applicable Canadian amendments.

Technical Requirements

Marking and Instructions

Every recessed luminaire must be permanently marked with:

Rated voltage, frequency, and maximum lamp wattage or electrical rating.
Manufacturer’s name, trademark, and model identifier.
Type of luminaire: IC (insulation‑contact) or Non-IC (insulation‑cover prohibited).
Maximum ambient temperature (ta) if other than 25 °C.
Minimum clearance to combustible materials (if applicable).
Warning: “Do not cover with insulation” for Non-IC types, or “Suitable for direct contact with thermal insulation” for IC types.

Construction

Materials used must be non‑combustible or have a flammability rating of V‑2 or better. Mechanical strength of the housing and mounting means must withstand a 10‑kg load applied for 1 minute without permanent deformation. Edges must be rounded to prevent damage to wiring.

Thermal Performance

The most critical part of the standard deals with heat management. Recessed luminaires can generate significant heat, which must not degrade surrounding building materials or cause fire. Two categories exist:

IC‑rated (Insulation Contact): Designed to operate safely when completely covered by thermal insulation. The maximum temperature on the ceiling surface surrounding the luminaire must not exceed 90 °C, and the internal wiring compartment must remain below its rated temperature.
Non‑IC rated: Must never be covered by insulation. Clearance of at least 75 mm from any combustible material is required, and the luminaire must be equipped with a factory‑installed thermal protector (or be designed so that the surface temperature limits are not exceeded under normal or abnormal conditions).

Key Differences Between IC‑Rated and Non‑IC Rated Recessed Luminaires
Requirement	IC‑Rated	Non‑IC Rated
Insulation cover permitted	Yes	No (must be kept clear)
Minimum ceiling surface temperature limit	≤ 90 °C	≤ 90 °C (measured without insulation)
Thermal protector required	Not mandatory if design limits are met	Required (automatic reset type)
Marking requirements	“IC” or “Suitable for insulation contact”	“Non‑IC” + warning label
Typical applications	Insulated ceilings (attics, soundproofing)	Non‑insulated ceilings (commercial, drywall only)

Fire Protection

Luminaires installed in fire‑rated ceilings (e.g., ‑hour assemblies) must maintain the integrity of the fire‑resistant construction. The standard references tests according to CAN/ULC S101 or ASTM E119. Recessed luminaires must not create openings that reduce the fire‑resistance rating. For this purpose, IC‑rated luminaires sometimes include a fire‑rated enclosure or a “fire‑hood” accessory that is tested as part of the assembly.

Warning: Failure to observe the “Non‑IC – Do Not Cover” marking can create a serious fire hazard. Heat buildup under insulation may exceed the luminaire’s safe operating temperature, leading to melting of wiring or ignition of adjacent materials.

Electrical Connections

Terminals must accommodate wiring as required by the CE Code (Table 11). For luminaires rated ≤ 20 A, terminal blocks rated for at least 90 °C are required. Strain relief is mandatory for all wiring connections that might be subject to pulling during installation or maintenance. A dedicated earthing terminal must be provided for luminaires with accessible metal parts.

Implementation Highlights

Selecting the Correct Luminaire for the Ceiling Type

Contractors and designers must coordinate with the building’s insulation strategy. In attics or insulated ceilings, only IC‑rated luminaires can be used. The IC rating must be clearly marked on the luminaire and verified during inspection. Non‑IC luminaires installed in insulated cavities require a clearance box or fire‑rated assembly that maintains the insulation clearance.

Integration with the Canadian Electrical Code (CE Code)

CAN CSA E598-2-2-98 is referenced by CE Code Rule 30‑304(2), which mandates that recessed luminaires installed in insulated ceilings must be Type IC or installed in a manner that ensures the insulation is maintained at least 75 mm away from the luminaire. The standard also aligns with the NBC’s requirements for fire‑stopping.

LED and Retrofit Compatibility

While originally drafted for conventional light sources, the standard applies equally to integral LED modules. Retrofit kits (e.g., GU10‑to‑LED adapters) must not be used if they cause the luminaire’s total wattage rating to be exceeded. The thermal testing of a luminaire with an LED module must demonstrate that component temperatures stay within manufacturer limits, and the luminaire must be re‑tested if the LED module is changed.

Compliance strategy: To achieve certification, manufacturers should submit the luminaire for testing at a CSA‑accredited lab, including thermal tests in standardized insulation (3‑inch thick cellulose or fibreglass) for IC types, and abnormal operation tests with the thermal protector (if any).

Compliance and Certification

Testing and Evaluation

Conformity to CAN CSA E598-2-2-98 is established through:

Type tests: Temperature rise, mechanical (static load, push‑pull on lampholders), and abnormal operation (e.g., covered thermal test for IC, lamp failure modes).
Production line tests: Dielectric strength, earthing continuity, and marking verification for every unit.
Periodic surveillance: Product re‑testing every three years by the certification body.

Products that pass all tests may bear the cCSAus mark (or equivalent) indicating compliance with both Canadian and U.S. standards (via CSA C22.2 No. 250 series). The mark must be accompanied by “IC” or “Non‑IC” as appropriate.

Differences from IEC 60598-2-2

Canadian requirements deviate from the IEC base document in several key areas:

Supply connection must be via pigtail leads (≥ 150 mm) or a connector suitable for the Canadian wiring method (looping or terminal block).
Ambient temperature classification: ta is mandatory on the nameplate if the luminaire is tested at a ta other than 25 °C; IEC allows omission.
Thermal protector reset type: only automatic‑reset protectors are allowed in Non‑IC luminaires for Canada.
Fire‑rating requirements are harmonized with CAN/ULC standards rather than ASTM.

Important: Imported recessed luminaires with only IEC markings are not acceptable for Canadian installations. They must be re‑evaluated for CSA Canadian deviations and be marked accordingly. Always check for a valid Canadian certification mark before purchase.

Frequently Asked Questions

Q: What is the difference between IC‑rated and Non‑IC‑rated recessed luminaires?
A: IC‑rated luminaires are designed and tested for safe operation when completely covered by thermal insulation. Non‑IC luminaires must never be covered by insulation and require a minimum 75 mm air gap around them. Choosing the wrong type can lead to overheating and fire risk.

Q: Can I install a recessed luminaire in a ceiling that has blown‑in cellulose insulation?
A: Yes, but only if the luminaire is clearly marked as “IC” (Insulation Contact). If the luminaire is Non‑IC, you must build a barrier to keep the insulation at least 75 mm away from all sides of the luminaire. It is safer to select an IC‑rated product when insulation is present.

Q: Does CAN CSA E598-2-2-98 apply to recessed LED downlights?
A: Yes. The standard covers all types of lamps, including integral LED modules. The luminaire must be tested with the specific LED module and driver used. Changing to a different LED module without re‑evaluation may void compliance and create a safety hazard.

Q: What markings are required on a compliant recessed luminaire according to this standard?
A: The luminaire must display the manufacturer’s name, model, electrical ratings (V, Hz, W), type (IC or Non‑IC), maximum ambient temperature (if other than 25 °C), and certification mark (e.g., cCSAus). Non‑IC units must include a warning against covering with insulation.

Article prepared with reference to CAN CSA E598-2-2-98 and the CE Code. For full regulatory details, consult the latest edition of the standard.

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