EICR vs PAT Testing: What's the Difference and Why You Need Both
If you run a business or manage a commercial property, you have probably heard of both EICR and PAT testing. The two terms get used interchangeably in conversation, and it is one of the most common misunderstandings we encounter when speaking to clients across Manchester. Many business owners assume that having one test means they are fully covered for electrical safety — but that is simply not the case.
An EICR (Electrical Installation Condition Report) and PAT testing (Portable Appliance Testing) are two completely different inspections. They examine different parts of your electrical system, they are governed by different regulations, and they are carried out at different intervals. Getting them confused — or skipping one because you think the other has you covered — can leave dangerous gaps in your compliance and put your staff, tenants and customers at risk.
In this guide, we will explain exactly what each test involves, how they differ, why you need both for complete electrical safety, and what Manchester businesses should be doing right now to stay compliant.
Why Understanding the Difference Matters
Every electrical system in a commercial or residential property can be split into two broad categories: the fixed wiring installation and the portable appliances that plug into it.
The fixed wiring installation is everything built into the fabric of the building — the cables behind your walls, the consumer unit (fuse board), distribution boards, light fittings, socket outlets, earthing and bonding conductors. This is the permanent electrical infrastructure that powers everything else.
Portable appliances are the items you plug in and can move around — computers, monitors, kettles, microwaves, desk lamps, phone chargers, power tools, extension leads and more. These are the things your employees and tenants use daily.
Both categories carry their own risks. Faulty fixed wiring can cause electrical fires, electric shocks and power failures. Defective portable appliances can overheat, short-circuit or deliver a fatal electric shock. UK regulations recognise this and address each category separately.
For fixed wiring, the key legislation is the Electrical Safety Standards in the Private Rented Sector (England) Regulations 2020 for rental properties, and BS 7671 (the IET Wiring Regulations) for all electrical installations. For portable appliances, the Electricity at Work Regulations 1989 place a general duty on employers to ensure all electrical equipment is maintained in a safe condition. Understanding both frameworks is essential if you want to avoid fines, insurance disputes and — most importantly — injuries.
What Each Test Involves
What Is an EICR?
An EICR — sometimes called fixed wire testing — is a detailed inspection and testing of the permanent electrical installation in a building. A qualified electrician will examine the condition of your wiring, consumer units, distribution boards, earthing arrangements, bonding conductors, circuit protective devices, socket outlets and light fittings.
The purpose is to identify any deterioration, defects, damage or non-compliance with current safety standards. Each issue found is assigned a classification code:
- C1 (Danger present) — an immediate risk that requires urgent action.
- C2 (Potentially dangerous) — a fault that could become dangerous and needs attention.
- C3 (Improvement recommended) — not immediately dangerous but advisable to address.
- FI (Further investigation) — more testing is needed to determine the extent of the issue.
An EICR must be carried out by a qualified and competent electrician — ideally someone registered with a recognised scheme such as NICEIC.
What Is PAT Testing?
Portable appliance testing is the inspection and testing of any electrical equipment that has a plug and can be moved — even if, in practice, it rarely is. This includes desktop computers, printers, kettles, toasters, vacuum cleaners, hand-held power tools, extension leads, phone chargers, portable heaters and floor-standing fans.
PAT testing involves a combination of visual inspection and electrical tests using a dedicated PAT tester. The visual check looks for damage to the cable, plug and casing. The electrical tests measure earth continuity, insulation resistance and, where applicable, earth leakage. Each item either passes or fails, and a pass/fail label is attached to the appliance.
Here is an important point that many business owners are surprised to learn: PAT testing is not a specific legal requirement. There is no law that says you must PAT test your appliances. However, the Electricity at Work Regulations 1989 require employers to ensure that all electrical systems and equipment are maintained to prevent danger. The Health and Safety Executive (HSE) recognises PAT testing as the most practical way to demonstrate this duty of care. In the event of an accident, not having PAT test records could leave you exposed to prosecution and civil claims.
The recommended frequency depends on the type of equipment and the environment. Office IT equipment might be tested every four years, while portable tools on a construction site might need checking every three months.
Key Differences at a Glance
- What is tested: EICR covers fixed wiring, consumer units, distribution boards, earthing and bonding. PAT covers portable appliances — anything with a plug.
- Legal status: EICR is a legal requirement for private landlords in England. PAT testing is not a specific legal requirement but is the accepted method for complying with the Electricity at Work Regulations 1989.
- Frequency: EICR is typically every five years. PAT testing varies from three months to four years depending on the appliance type and environment.
- Who performs it: EICR must be carried out by a qualified, competent electrician. PAT testing can be carried out by any competent person with appropriate training and equipment.
- Cost comparison: An EICR for a commercial property typically costs several hundred pounds depending on the number of circuits. PAT testing is usually charged per appliance or as a fixed fee for a batch.
- Certificate type: An EICR produces an Electrical Installation Condition Report with classification codes. PAT testing produces a register of results and individual pass/fail labels on each appliance.
Why You Need Both for Complete Protection
If you only have an EICR, your fixed wiring might be in perfect condition — but a faulty kettle, a damaged extension lead or an overheating laptop charger could still cause a fire or a fatal electric shock. An EICR does not test a single portable appliance.
If you only have PAT testing, every plug-in device might pass — but deteriorating wiring behind the walls, a faulty consumer unit or a missing earth bond could cause a catastrophic failure at any moment. PAT testing does not examine the building's electrical installation at all.
Consider a real-world scenario: a Manchester office receives a satisfactory EICR. Six months later, a staff member suffers a burn from a faulty portable heater that has never been tested. The employer faces an HSE investigation, and their electrical safety certificate for the building is irrelevant — the portable appliance was never within its scope. The business is exposed to prosecution, a compensation claim and reputational damage.
Insurance providers increasingly ask for evidence of both compliance testing programmes. A gap in either area could give an insurer grounds to reduce or refuse a claim following an electrical incident. Full compliance means covering both fixed and portable — no exceptions.
What Manchester Businesses Need to Know
Across Greater Manchester, we work with a large number of SMEs who initially contact us for an EICR and assume that is all they need. This is especially common in shared office spaces and co-working environments across Manchester city centre, where tenants often rely on the building landlord's EICR and forget that every portable appliance at their desk is their own responsibility.
If you operate from serviced offices in Spinningfields, a converted mill in Ancoats, or a retail unit in the Northern Quarter, your landlord's EICR covers the building's fixed wiring — but it does not cover your computers, extension leads, portable heaters or kitchen appliances. That responsibility sits with you as the employer or business occupier.
Taking a combined approach to electrical safety is the most cost-effective and thorough way to protect your people and your business. Do not leave gaps.
Take Action Today
Book Your Free Electrical Compliance Audit Today
At Manchester Compliance, we offer a free, no-obligation electrical compliance audit that covers both your fixed wiring installation and your portable appliances. We will assess your current status, identify any gaps and provide a clear, costed plan to bring everything up to standard. Get in touch to book your audit.
Download: Complete Electrical Testing Checklist for Businesses
Not sure where to start? Download our free checklist that walks you through every electrical compliance requirement for UK businesses — including EICR, PAT testing, emergency lighting and fire alarm testing. Visit our news and resources page to access the guide.
Still Have Questions?
If you are unsure whether your property needs an EICR, PAT testing or both, our team is happy to help. You can reach us by phone, email or live chat — whichever suits you best. Head to our contact page and we will get back to you the same working day.