From PAT to EET: The Evolution of Electrical Safety Testing
Jan 16 2026 9:31AM
Why the Name Changed
The term PAT (Portable Appliance Testing) often caused confusion because it implied that only portable items needed testing. In reality, all mains-powered electrical equipment—including fixed devices—must be inspected. The shift to Electrical Equipment Testing (EET) reflects this broader scope. This change aligns with the Institution of Engineering and Technology (IET) Code of Practice, which updated its terminology in the 5th Edition to better represent the full range of equipment covered.
What’s Changed—and What Hasn’t
Although the name has changed, the core process remains the same. EET still involves visual checks for damage and electrical tests such as earth continuity and insulation resistance. Legal obligations under the Electricity at Work Regulations 1989 also remain unchanged—duty holders must ensure all electrical equipment is safe for use.
Beyond Semantics: A More Comprehensive Approach
EET goes beyond portable appliances to include fixed installations and built-in devices such as fridges and microwaves. It also introduces a risk-based assessment approach, considering factors such as equipment type, age, environment, and usage patterns. This ensures testing is tailored rather than following a one-size-fits-all model.
Key Benefits of EET
The updated approach improves safety by covering all mains-powered devices and detecting faults more effectively. It also enhances cost-efficiency by reducing unnecessary testing and focusing on higher-risk items. Additionally, EET supports better asset tracking, feeding valuable data into maintenance planning and lifecycle management.
Practical Changes for Businesses
Organisations should update documentation, policies, and training materials to reference EET. Testing frequencies should be adjusted based on risk assessments rather than default intervals. Clear communication is essential—EET is essentially PAT under a new name, but with a more modern and precise approach.
Final Takeaway
EET represents more than a rebrand; it’s a modern, risk-based evolution of PAT testing that accurately reflects regulatory standards and industry best practice. While the testing methods remain consistent, EET delivers comprehensive coverage, increased safety, and improved efficiency. Adopting EET ensures compliance and demonstrates a commitment to electrical safety.