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CAN CSA E60335-2-47-01: Safety of Commercial Electric Cooking Appliances
Essential technical requirements, verification methods, and compliance guidance for Canada’s adoption of IEC 60335-2-47
Scope and Application
CAN CSA E60335-2-47-01 is the Canadian national adoption of the international standard IEC 60335-2-47:2002, with Canadian deviations. It applies to the safety of commercial electric cooking appliances used in restaurants, institutional kitchens, hotels, and similar commercial food‑service establishments. The standard covers:
- Electric ranges and ovens (including multiple‑deck ovens and convection ovens).
- Electric hobs and hob elements.
- Griddles, fry‑tops, and similar surface‑cooking appliances.
Appliances covered by this standard have a rated voltage not exceeding 600 V and are intended for installation in commercial premises. They are not intended for household or outdoor use. The standard does not cover microwave ovens, washing machines, or appliances intended exclusively for industrial processing.
The standard is used in conjunction with CAN CSA E60335-1 (the Canadian adoption of IEC 60335‑1, General requirements). Part 2‑47 modifies and supplements the general requirements to address the specific hazards and operating conditions of commercial electric cooking equipment.
Note: The designation “CAN CSA E60335‑2‑47‑01” identifies this standard as part of the E (Electrical) category within the CSA Group’s portfolio. Manufacturers selling in Canada must demonstrate compliance with this safety standard as part of product certification (e.g., by CSA or other accredited certification bodies).
Technical Requirements
Protection Against Electric Shock and Insulation
CAN CSA E60335‑2‑47‑01 requires provisions for solidly earthing all exposed conductive parts. Creepage distances, clearances, and insulation thickness must comply with the general requirements of Part 1, with additional specific values for cooking appliances. Table 1 summarizes the key dielectric strength and insulation resistance requirements.
| Parameter | Requirement | Reference Clause |
|---|---|---|
| Dielectric strength (basic insulation) | 1250 V RMS, 50/60 Hz for 1 min | 16.3 (Part 1, modified) |
| Dielectric strength (reinforced insulation) | 2500 V RMS, 50/60 Hz for 1 min | 16.3 (Part 1, modified) |
| Clearance for basic insulation (≤250 V) | ≥ 2.0 mm | 29.1.1 |
| Clearance for reinforced insulation (≤250 V) | ≥ 4.0 mm | 29.1.2 |
| Creepage distance (basic, pollution degree 2) | ≥ 3.2 mm | 29.2 |
| Insulation resistance (applied 500 V DC) | ≥ 1 MΩ | 16.2 |
Heating and Temperature Limits
Surface temperatures of accessible parts are strictly controlled to prevent burns and fire hazards. Table 2 presents the maximum permissible temperature rises for key components when the appliance is operated under normal conditions at rated voltage.
| Component / Surface | Maximum Temperature Rise (K) | Test Condition |
|---|---|---|
| Oven door outer surface (metal) | 60 | Oven at steady state at max. setting |
| Oven door outer surface (glass) | 70 | Oven at steady state at max. setting |
| Hob top surface (metal, unheated zone) | 60 | Adjacent hob elements at full power |
| Handles and knobs (metal) | 35 | After 30 min of operation |
| Supply cord insulation (nearest to appliance) | 45 | Three hours of operation |
Additionally, the standard mandates that ovens be constructed so that the door does not exceed the temperature limits after 25 cycles of opening and closing, and that all heating elements are guarded against accidental contact when removed or during cleaning.
Mechanical Hazards and Construction
Commercial cooking appliances must be robust enough to withstand field handling, cleaning, and thermal expansion. Specific construction requirements include:
- Stability test: The appliance must not tilt when a horizontal force of 250 N is applied at the most unbalanced point.
- All sharp edges and corners must be rounded or protected.
- Oven doors must have a positive latching mechanism and must not open unexpectedly under gravity.
- Removable parts (e.g., drip trays, grills) must not create a risk of electrical contact with live parts when removed for cleaning.
Important: The standard explicitly prohibits the use of single-pole switching for the heating elements unless the elements are totally enclosed and the appliance is permanently connected to the supply. This is to avoid a false sense of isolation when only one pole is opened.
Implementation and Verification
Manufacturers designing to CAN CSA E60335‑2‑47‑01 must follow a structured verification plan. The certification process typically involves:
- Type testing of a representative sample for all applicable clauses (dielectric, heating, mechanical, abnormal operation).
- Production line testing – at least 100 % of units must pass a dielectric strength test and a grounding continuity test.
- Documentation – the manufacturer must supply a technical file including circuit diagrams, parts lists, and a list of critical components (e.g., switches, thermostats, capacitors).
The standard requires that all overcurrent protection devices (thermal cut-outs, fuses) be marked with their rating and type, and that instructions include a wiring diagram for the installer.
Best practice: Integrate Part 2‑47 requirements early in the design phase. Use commercially rated switches and relays with a minimum rated temperature of 105 °C, and ensure that all thermal sensors are located where they can properly respond to failure modes (e.g., blocked oven vent).
Compliance and Certification Notes
In Canada, compliance with CAN CSA E60335‑2‑47‑01 is typically demonstrated through product certification by an accredited body such as CSA Group, UL (cUL), or Intertek (cETL). The following points are critical for a smooth certification process:
- Canadian deviations: The standard includes some modifications compared to the international edition. For example, the Canadian version requires a higher level of protection for permanently connected equipment (see clause 7.12.1). Manufacturers should ensure they use the CAN CSA version, not the IEC version, for Canadian market access.
- Supply cord and plug: Most commercial cooking appliances are intended for permanent connection, so supply cords are not provided. If a plug is fitted, it must be an approved Canadian configuration (e.g., NEMA 14‑30, 14‑50) and the appliance must be marked with the plug type.
- Markings and instructions: All markings must be in English and French. The instruction manual must include language on safe operation, cleaning, and maintenance, as well as the contact information of the manufacturer.
- Periodic audits: Certified products are subject to factory surveillance audits to confirm ongoing compliance. Manufacturers must maintain quality control records for at least 10 years.
Critical: Failure to include an adequate thermal cut‑out for each oven compartment has been the leading cause of field failures in commercial ovens. The standard requires at least two independent temperature‑limiting devices for any oven that can be operated unattended.
After the standard is implemented, manufacturers are encouraged to stay updated with amendments. The next revision (currently CSA E60335‑2‑47‑17) is based on IEC 60335‑2‑47:2016 and includes more stringent requirements for electronic controls and touch‑screen interfaces.
Frequently Asked Questions
Q: What is the difference between CAN CSA E60335‑2‑47‑01 and the international IEC 60335‑2‑47?
A: The Canadian version includes national deviations that reflect Canadian electrical codes (e.g., supply voltage definitions, marking languages, and specific requirements for permanently connected appliances). The technical safety requirements are essentially identical, but certificates issued based on IEC editions may not be automatically accepted in Canada without a review of the deviations.
A: The Canadian version includes national deviations that reflect Canadian electrical codes (e.g., supply voltage definitions, marking languages, and specific requirements for permanently connected appliances). The technical safety requirements are essentially identical, but certificates issued based on IEC editions may not be automatically accepted in Canada without a review of the deviations.
Q: Does this standard apply to all commercial cooking equipment, including induction hobs?
A: Yes, induction hobs are considered electric hob elements and are covered by the scope, provided they are designed for commercial use. The standard addresses the specific hazards of induction heating, such as electromagnetic fields and high‑frequency emissions. Additional local EMC regulations (e.g., Industry Canada ICES‑001) may also apply.
A: Yes, induction hobs are considered electric hob elements and are covered by the scope, provided they are designed for commercial use. The standard addresses the specific hazards of induction heating, such as electromagnetic fields and high‑frequency emissions. Additional local EMC regulations (e.g., Industry Canada ICES‑001) may also apply.
Q: What are the key failure modes that the standard is designed to prevent?
A: The principal hazards are electric shock, fire (due to overheating of grease or insulation), thermal burns, and mechanical instability. The standard’s tests (such as the abnormal operation test that simulates a blocked vent) are designed to ensure that the appliance remains safe even under misuse or single‑component failure.
A: The principal hazards are electric shock, fire (due to overheating of grease or insulation), thermal burns, and mechanical instability. The standard’s tests (such as the abnormal operation test that simulates a blocked vent) are designed to ensure that the appliance remains safe even under misuse or single‑component failure.
Q: Is there a minimum requirement for thermal efficiency or energy consumption?
A: No, CAN CSA E60335‑2‑47‑01 is solely a safety standard. Energy efficiency and performance requirements are covered by separate standards (e.g., CSA C22.2 No. 60335‑2‑47 is the safety standard; efficiency may be addressed by provincial or federal regulations such as NRCan’s Energy Efficiency Regulations).
A: No, CAN CSA E60335‑2‑47‑01 is solely a safety standard. Energy efficiency and performance requirements are covered by separate standards (e.g., CSA C22.2 No. 60335‑2‑47 is the safety standard; efficiency may be addressed by provincial or federal regulations such as NRCan’s Energy Efficiency Regulations).
This article is prepared for informational purposes and is current as of 2026. Always refer to the latest edition of the standard published by CSA Group for exact requirements.