Why and When? – The Basics

Let’s start off with the basics.

So why do we PAT test equipment?

Prevent Electrical Accidents: PAT testing helps identify potential electrical faults that could lead to shocks, fires, or equipment failures.

Ensure Safety Compliance: While not legally required, PAT testing is a practical way to demonstrate compliance with UK regulations such as the Health and Safety at Work Act 1974 and the Electricity at Work Regulations 1989.

Protect Employees and Tenants: Regular PAT testing ensures that electrical equipment is safe for use, protecting employees, tenants, and customers from potential electrical hazards.

Maintain a Safe Environment: By fulfilling duty of care under various regulations, PAT testing helps maintain a safe working or living environment.

Regular PAT testing is a crucial element of electrical safety and legal compliance in the UK, ensuring the well-being of all those interacting with electrical equipment.

The Legislation and Regulations

There are several key regulations covering this subject:

Electricity at Work (EAW) Regulations

Has legal status and come into force in 1990. Part of the Health and Safety at Work Act 1974. (Section 15). Provides guidance to assist duty holders on the fundamental or essential requirements and precautions to be taken regarding working on or with electrical equipment or systems in any place of work.

The Electricity Safety, Quality and Continuity Regulations (ESQCR)

The Electricity at Work Regulations 1989 require that any electrical equipment that has the potential to cause injury is maintained in a safe condition. However, the Regulations do not specify what needs to be done, by whom or how frequently (ie they don’t make inspection or testing of electrical appliances a legal requirement, nor do they make it a legal requirement to undertake this annually)

The Health and Safety at Work Act 1974 (HASAWA 1974)

The Health and Safety at Work Act 1974 is the foundation of workplace safety legislation in the UK. It sets a general duty on employers to safeguard employees and others who may be affected by work activities. This includes ensuring that electrical appliances and systems do not pose a hazard.

Key points under the Act:

• Employers must assess and control risks arising from work activities.
• Safe systems of work must be established and maintained.
• Employees also have a duty to use equipment correctly and follow safety guidelines.

While the Act does not specifically reference testing, it establishes the framework that makes regular safety checks essential.

Provision and Use of Work Equipment Regulations 1998

The Provision and Use of Work Equipment Regulations 1998 (PUWER) further reinforce the need for safe equipment in the workplace. They require employers to ensure that all work equipment is:

• Suitable for its intended use.
• Maintained in a safe condition.
• Used only by trained and competent staff.

For businesses, this translates into having policies that cover equipment checks, training, and documentation of maintenance records. Compliance with PUWER shows a proactive commitment to workplace safety.

IET Code of Practice

The IET Code of Practice for In-Service Inspection and Testing of Electrical Equipment 4 8 2 does not explicitly mention the definitions used within the 5th Edition. However, the 5th Edition provides guidance on in-service inspection and testing to determine whether electrical equipment is safe for continued use. It emphasizes the need to consider the risks associated with the use of electrical equipment, the environment in which it is used, and the user’s skill level. The Code applies to all workplaces and some types of rented accommodation.

Management Requirements

Legal Framework: PAT testing supports compliance with the Electricity at Work Regulations 1989, which require electrical equipment to be maintained in a safe condition

Duty Holders: Employers, landlords, and facilities managers are responsible for ensuring equipment safety

Competence: Testing must be carried out by a competent person—someone with appropriate training, experience, and understanding of the equipment and testing procedures

Policy and planning:

• Establish a formal maintenance regime
• Include user checks, visual inspections, and combined inspection/testing
• Define roles, responsibilities, and escalation procedures for failed equipment

When Should We Perform Inspecting and Testing? 

(PAT Testing)

The law does not state that all portable appliances must be tested yearly. Instead, the appropriate frequency depends on factors such as:

• The type of equipment (for example, a power tool vs. a desktop monitor)
• How often it is used
• The environment where it operates (a busy construction site vs a low-risk office)
• Anyone with the right training, competence, and equipment can perform testing
• Employers often appoint trained staff members to handle routine checks
• Professional testing may still be advisable for complex or high-risk environments

PAT Testing Frequency Table

Here is a practical frequency guide you can adapt:

• Office Equipment (low-risk, stationary): Every 2–4 years
• Kitchen Appliances (high-use, high-risk): Annually
• Workshop Tools (portable and frequently moved): Every 6–12 months
• Extension Leads and Multi-Socket Adaptors: Annually

Item	Frequency of testing
Office Equipment (low-risk, stationary	Every 2–4 years
Kitchen Appliances (high-use, high-risk)	Annually
Workshop Tools (portable and frequently moved):	Every 6–12 months
Extension Leads and Multi-Socket Adaptors	Annually