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CAN CSA E60335-2-6-18: Safety Requirements for Stationary Cooking Ranges, Hobs, and Ovens
A Comprehensive Technical Guide to the Canadian Adoption of the IEC 60335-2-6 Household Appliance Safety Standard
The CAN CSA E60335-2-6-18 standard represents Canada’s national adoption of the international IEC 60335-2-6 standard, focusing specifically on the safety of stationary electric cooking appliances. Published by the Canadian Standards Association (CSA Group), this standard is essential for manufacturers, importers, and testing laboratories dealing with household and similar cooking equipment. This article provides a detailed breakdown of the standard’s scope, technical requirements, and how to achieve compliance in the Canadian market.
1. Scope of Application and Key Definitions
The standard applies to the safety of stationary electric cooking ranges, hobs, ovens, and similar appliances intended for household and similar use. The rated voltage must be not more than 250 V for single-phase appliances and 480 V for other appliances.
Category E Context: Under the CSA classification system, Category E covers Environmental and Electrical Safety Standards. The CAN CSA E60335-2-6-18 standard fits squarely within this domain, mandating rigorous performance and safety testing to prevent fire, electric shock, and mechanical hazards.
The scope also covers appliances intended for use in shops, offices, light industry, and farms, provided they are not for regular professional cooking operations where the appliance is subject to continuous heavy usage. It explicitly excludes appliances designed exclusively for industrial purposes or locations where special conditions prevail (e.g., corrosive or explosive environments).
2. Core Technical Requirements and Structure
The CAN CSA E60335-2-6-18 standard is a Part 2 standard that modifies clauses in the general standard CAN/CSA C22.2 No. 60335-1 (Safety of Household and Similar Appliances – Part 1: General Requirements). Compliance requires simultaneous adherence to both documents.
2.1 Temperature Rise and Surface Temperature Limits
One of the most critical sections (Clause 11) dictates specific temperature rise limits to prevent burns and fire hazards. Ovens must limit external surface temperatures, while hobs must maintain specific temperatures under normal operating conditions.
| Accessible Surface | Maximum Temperature (Normal Operation) | Test Condition Reference |
|---|---|---|
| Oven Door Outer Glass | 85 °C (or higher based on material) | Clause 11.3 |
| Hob Edge / Front Panel | 95 °C (metal), 105°C (plastic/enamel) | Clause 11.3 |
| Knobs and Handles (Metal) | 35 °C (rise), 55 °C (max) | Clause 11.3, Table 3 |
| Control Panel | 85 °C (plastic) | Clause 11.3 |
Common Compliance Pitfall: The standard places heavy emphasis on the “Delta T” (temperature rise) testing based on ambient temperature. Failure to account for ambient test room conditions (typically 20 °C ± 5 K) is a frequent source of test failures for external metal surfaces around ovens.
2.2 Stability and Mechanical Hazards
Clause 20 addresses stability requirements. Appliances such as free-standing ranges and portable hobs must not tip over when a force of 200 N is applied to the open oven door or a specific area of the hob. This prevents catastrophic spillage of hot contents or crushing injuries.
Critical Safety Hazard: The stability requirements of Clause 20 are non-negotiable. A range that fails the 200 N force test presents an immediate danger of catastrophic tipping. This is a critical safety hazard that must be addressed in the design phase, often requiring heavier bases or permanent anti-tip brackets to be installed by the consumer.
2.3 Protection Against Electric Shock
Leakage current limits and dielectric strength (Clause 13 & 16) remain stringent. The standard requires specific creepage distances between live parts and accessible metal for high-power components typically found in ovens and induction hobs.
2.4 Unique Requirements for Induction Hobs
The standard includes specific sub-clauses for induction cooking zones. The construction must prevent operation if a small utensil (ferrous diameter < 8 cm) or no utensil is present, except during a specific power-on sequence or cleaning mode.
3. Compliance, Testing, and Certification
For products to be legally sold in Canada, they must comply with this standard. Certification is typically handled by accredited bodies like CSA, UL, or Intertek. In the regulatory framework of Canada, the standard is referenced under the jurisdiction of Measurement Canada and provincial electrical safety authorities.
Key Steps for Certification:
- Documentation Audit: Review of circuit diagrams, Bill of Materials (BOM), and component certifications (e.g., switches, thermostats, and wiring).
- Sample Construction Review: Physical inspection of construction, materials, and wiring versus the standard’s clauses (e.g., Clause 22, 23, 24).
- Normal and Abnormal Operation Testing: Full suite of tests outlined in Part 1 and Part 2, including overload conditions (Clause 19) where a thermostat is short-circuited.
Successfully achieving certification to the CAN CSA E60335-2-6-18 standard not only grants access to the Canadian market but also provides a strong safety credential recognized globally through the IECEE CB Scheme, facilitating acceptance in other CB member countries.
Conclusion
The CAN CSA E60335-2-6-18 standard represents a rigorous framework for ensuring the safety of stationary cooking appliances. By meticulously applying the temperature limits, stability tests, and construction requirements, manufacturers can deliver safe, reliable products to the demanding North American market.
Frequently Asked Questions (FAQs)
Q: How does the CAN CSA E60335-2-6-18 standard differ from the international IEC 60335-2-6 standard?
A: The Canadian adoption is generally identical to the IEC edition it precedes (IEC 60335-2-6:2014). However, CSA may include specific “Canadian Deviations” in Annex AA or the body to account for differences in national wiring rules (the Canadian Electrical Code, Part I) and voltage requirements (120/240 V systems vs 230 V). Manufacturers should always verify the specific CSA edition.
A: The Canadian adoption is generally identical to the IEC edition it precedes (IEC 60335-2-6:2014). However, CSA may include specific “Canadian Deviations” in Annex AA or the body to account for differences in national wiring rules (the Canadian Electrical Code, Part I) and voltage requirements (120/240 V systems vs 230 V). Manufacturers should always verify the specific CSA edition.
Q: Does this standard cover gas cooking ranges?
A: No. This specific standard (E60335-2-6-18) is specifically for electric cooking appliances. Gas cooking ranges fall under the scope of the CAN/CGA B149 series (Natural Gas and Propane Installation Code) and specific appliance standards like CSA/ANSI Z21.1 (Household Cooking Gas Appliances).
A: No. This specific standard (E60335-2-6-18) is specifically for electric cooking appliances. Gas cooking ranges fall under the scope of the CAN/CGA B149 series (Natural Gas and Propane Installation Code) and specific appliance standards like CSA/ANSI Z21.1 (Household Cooking Gas Appliances).
Q: Is testing required for both Part 1 and