If you’ve ever noticed a small green, red, or blue sticker on a plug or appliance, you’ve seen a PAT testing label. These labels are more than just stickers — they provide important information about the safety of electrical equipment.
Whether you’re a business owner, landlord, or school administrator, understanding PAT labels helps you stay compliant and ensures appliances remain safe to use.
What is PAT Testing?
Portable Appliance Testing (PAT) is the process of checking electrical appliances to make sure they’re safe. It includes:
- Visual inspections for visible damage.
- Electrical testing using specialist equipment to detect hidden faults.
After testing, each appliance is labelled to show its status and when it should next be tested.
The Different Types of PAT Testing Labels
PAT labels can vary depending on the tester or company, but most follow a similar colour-coded system:
✅ PASS Labels (Usually Green)
- Indicates the appliance has been tested and is safe to use.
- Shows the test date, engineer’s details, and sometimes the next test due date.
- Reassures staff, tenants, and visitors that the equipment is compliant.
❌ FAIL Labels (Usually Red)
- Means the appliance failed either the visual inspection or electrical test.
- Should not be used until repaired or replaced.
- Often clearly marked with “DO NOT USE” for safety.
⚠️ Visual Inspection Labels (Sometimes Blue or Yellow)
- Used when an appliance has only had a visual check, not a full electrical test.
- Common for low-risk equipment (e.g. office computers).
- May indicate when a full PAT test is next required.
Information Found on PAT Labels
A PAT label typically includes:
- PASS or FAIL result
- Date of test
- Tester/engineer’s name or ID
- Next test due date (if applicable)
- Appliance ID number for record-keeping
This information ensures accurate records and helps businesses demonstrate compliance during audits or inspections.
Why PAT Labels Matter
- Instant Safety Check – A quick glance at the label shows if an appliance is safe to use.
- Compliance Evidence – Labels provide proof that regular safety checks are being carried out.
- Maintenance Scheduling – Dates help businesses plan when appliances are next due for inspection.
- Accountability – Labels link directly to official PAT test reports, creating a clear paper trail.
Final Thoughts
PAT testing labels may seem like small stickers, but they carry vital information about the safety of your electrical equipment. Understanding what they mean helps you:
- Protect staff, tenants, and customers
- Stay compliant with UK health and safety regulations
- Avoid using unsafe appliances
- Keep accurate maintenance records
So, the next time you see a green, red, or blue PAT label, you’ll know exactly what it’s telling you — and why it matters.