Electrical Safety Matting UK: BS EN 61111 Insulating Rubber Mats Guide

Electrical safety matting is a critical piece of personal protective equipment (PPE) for anyone working on or near live electrical equipment. Unlike standard anti-fatigue or anti-slip matting, electrical insulating mats are specifically engineered and certified to resist the passage of electric current — potentially the difference between a safe working environment and a fatal accident.

This guide covers everything you need to specify, procure, and maintain compliant electrical safety matting for UK workplaces under the Electricity at Work Regulations 1989 and BS EN 61111.

Legal Requirements for Electrical Safety Matting in the UK

The Electricity at Work Regulations 1989 (EAWR) require that all electrical systems are maintained to prevent danger, and that persons working on electrical equipment are protected by suitable means. Electrical insulating matting is a recognised engineering control for protecting workers at switchgear, distribution boards, transformers, and substations.

The relevant standard is BS EN 61111:2009 — Electrical insulating matting for use in electrical installations. This standard specifies:

• Material requirements (vulcanised rubber compounds with verified insulating properties)
• Voltage class definitions and colour coding
• Proof voltage testing requirements
• Marking requirements (class, use voltage, and standard reference)
• In-service inspection and testing intervals

BS EN 61111 Voltage Classes Explained

Important: The class colour coding system allows immediate visual identification of voltage rating at the point of use — a critical safety feature when multiple voltage classes may be present on a site.

Applications: Where Electrical Safety Matting is Required

LV Switchgear Rooms & Distribution Boards

The most common application. Class 0 (red) matting is standard for rooms containing 415V three-phase distribution equipment. Required in front of switchgear, at control panels, and at any point where energised work may be carried out on LV systems. Minimum width 0.9m in front of equipment; wider mats for larger switchgear assemblies.

Transformer Substations

11kV and 33kV substations require Class 2 or Class 3 matting. Ground-mounted substations typically use matting in front of HV switchgear, at transformer tap positions, and at any accessible live terminal location.

Motor Control Centres (MCCs)

Industrial MCCs handling 415V motor drives, VFDs, and soft starters require Class 0 matting running the full length of the MCC. Where MCCs include medium-voltage sections, higher-class matting must be correctly installed and demarcated.

Control Rooms & SCADA Panels

Control room panels typically operate at lower voltages but may have sections with exposed LV connections. Class 00 or Class 0 matting is appropriate depending on the maximum voltage accessible.

Electrical Test Areas

Test bays where equipment is energised under test conditions require electrical safety matting appropriate to the maximum test voltage. In safety-critical environments, Class 2 or higher matting may be required even for nominally LV test work, to provide a safety margin.

Specification Guide: Choosing the Right Electrical Safety Mat

Key Parameters to Specify

• Voltage class: Based on maximum system voltage accessible at the work location
• Size: Standard widths 0.9m, 1.0m, 1.2m; lengths available in 5m or 10m rolls, or cut to bespoke dimensions
• Thickness: Typically 2mm–6mm for LV classes; thicker for HV classes
• Surface texture: Ribbed top surface (grip) with smooth underside (stability)
• Certification: Must carry BS EN 61111 class marking and UKCA/CE mark

What to Avoid

• Non-certified rubber matting: Standard SBR or EPDM matting — even heavy duty — is not rated for electrical insulation
• Deteriorated mats: Any mat showing cuts, punctures, cracks, blistering, or chemical contamination must be withdrawn immediately
• Wrong class: Using Class 0 matting where Class 2 is required. Always spec to the voltage present, not the voltage expected
• Incorrect size: Mats must cover the full working area — gaps in coverage defeat the protective purpose

In-Service Testing and Maintenance

Visual Inspection (Before Each Use)

The user must visually inspect the mat before laying it. Check for:

• Cuts, tears, or punctures
• Blistering or swelling (may indicate chemical contamination)
• Cracks or hardening (particularly at fold lines)
• Contamination with oil, solvents, or other chemicals
• Visible burn marks or tracking damage

Any mat with visible damage must be immediately withdrawn from service and destroyed.

Periodic Electrical Testing (Annual Minimum)

BS EN 61111 requires periodic electrical testing at intervals not exceeding 12 months. This involves re-testing the mat to its class proof voltage using specialist high-voltage test equipment. Testing must be performed by a competent person. Records must be maintained showing test date, class, result, and next due date — mats must display or be labelled with their current test date.

Storage

• Store rolled, not folded (folding creates stress crease points that may compromise insulation)
• Store away from ozone sources (electric motors, UV lamps) — ozone degrades rubber
• Keep away from petroleum solvents, oils, and strong chemical vapours
• Store in a cool, dry location away from direct sunlight

Frequently Asked Questions

What standard do electrical safety mats need to meet in the UK?

Electrical insulating mats used in UK workplaces must comply with BS EN 61111:2009. This standard defines six voltage classes with specific proof voltage and colour-coding requirements. Compliance is required under the Electricity at Work Regulations 1989.

What is the difference between Class 0 and Class 1 electrical matting?

Class 0 mats are rated for use up to 1,000V and proof tested to 5,000V. Class 1 mats are for use up to 7,500V, tested to 10,000V. For general LV switchgear work (240V/415V), Class 0 is the standard minimum.

How often do electrical safety mats need testing?

BS EN 61111 requires visual inspection before each use and electrical testing at intervals not exceeding 12 months by a competent person using appropriate test equipment.

Can I use standard anti-fatigue or anti-slip matting near electrical equipment?

No — standard rubber floor matting is NOT rated for electrical insulation and must never be relied upon for electrical protection. Only mats specifically certified to BS EN 61111 provide electrical insulation.

What colour are BS EN 61111 electrical safety mats?

BS EN 61111 colour coding: Class 00 = beige, Class 0 = red, Class 1 = white, Class 2 = yellow, Class 3 = green, Class 4 = orange. This allows quick visual identification of voltage rating at the point of use.

Need electrical safety matting? Browse our Electrical Safety Rubber Matting range → — BS EN 61111 certified, Class 0 and Class 1 available, free UK delivery.