Electrical Certificate Types UK: Complete Guide

The UK electrical industry uses a range of certificates and reports to document the design, installation, testing, and condition of electrical installations. Each certificate type serves a specific purpose, covers a specific type of work, and is governed by specific British Standards and regulations. Using the wrong certificate for a job — or failing to issue a certificate at all — can result in non-compliance with building regulations, scheme provider disciplinary action, and legal liability.

This guide covers all 8 main certificate types used by UK electricians in 2026. For each type, we explain what it is, when it is required, what it must contain, who can issue it, and the legal framework that governs it. The relevant British Standards are referenced throughout — primarily BS 7671:2018+A4:2026 (the IET Wiring Regulations), BS 5839 (fire detection and alarm systems), BS 5266 (emergency lighting), and the MCS standards for solar PV.

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The EICR is the formal document produced following periodic inspection and testing of an existing electrical installation. It replaced the older Periodic Inspection Report (PIR) and is defined by BS 7671 Appendix 6. The EICR records the condition of the installation as found, including any defects, deterioration, or departures from the current standard.

The EICR includes supply characteristics, details of the earthing arrangement, a schedule of items inspected (visual inspection), a schedule of test results (dead and live tests for every circuit), observations with classification codes, and the overall assessment. It is the most complex certificate type and typically takes 2 to 4 hours for a standard domestic installation.

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The EIC is issued after new installation work or a significant alteration to confirm that the work complies with BS 7671 at the time of completion. It is required for all notifiable work under Part P of the Building Regulations and must be issued before the installation is put into service.

The EIC has three parts: the design section (completed by the person responsible for the design), the construction section (completed by the person responsible for the construction), and the inspection and testing section (completed by the person responsible for initial verification). In domestic work, these are often the same person. The EIC must include a schedule of inspections, a schedule of test results for every circuit, and details of the supply characteristics and earthing arrangements.

The Minor Works Certificate (formally the Minor Electrical Installation Works Certificate, or MEIWC) is used for additions or alterations to an existing circuit that do not extend to the provision of a new circuit. It is a simplified version of the EIC, designed for smaller jobs where a full EIC would be disproportionate.

The Minor Works Certificate is simpler than a full EIC but still requires the essential test results: continuity of protective conductors, insulation resistance, polarity, earth fault loop impedance, and RCD operation (where applicable). Per Regulation 644.4.201 of BS 7671:2018+A4:2026, a Minor Works Certificate is not appropriate where the work includes either: (a) the provision of a new circuit, or (b) the replacement of a distribution board or consumer unit. Both conditions require a full EIC. Consumer unit replacement is also notifiable under Part P of the Building Regulations, meaning a registered electrician must issue an EIC for that work — not a Minor Works Certificate.

EV charger installations require a dedicated circuit and therefore a full Electrical Installation Certificate (EIC). However, EV charging installations have additional requirements under Section 722 of BS 7671 that go beyond a standard circuit installation.

Elec-Mate's EV Charger Certificate template includes all the standard EIC fields plus EV-specific sections for charging mode, charger make and model, maximum charging current, RCD type, PME assessment, and OZEV grant documentation.

Fire alarm certificates document the design, installation, commissioning, and testing of fire detection and fire alarm systems. They are governed by BS 5839 — Part 1 for non-domestic premises and Part 6 for domestic premises. The fire alarm certificate is separate from the electrical installation certificate; you need both.

The fire alarm certificate must record the system category, detector types and locations, manual call point locations, sounder coverage and output levels, power supply arrangements (including standby battery capacity), cause-and-effect programming, and the results of all commissioning tests. Annual servicing and testing must be documented separately.

Emergency lighting certificates document the design, installation, and testing of emergency escape lighting systems in accordance with BS 5266 (Part 1 for non-domestic premises). Emergency lighting is required in all non-domestic premises and in common areas of blocks of flats to ensure safe evacuation in the event of a mains power failure.

The emergency lighting certificate records the luminaire types and locations, the operating mode (maintained, non-maintained, or sustained), the rated duration, the results of commissioning tests, and the ongoing test schedule. Like fire alarm certificates, emergency lighting certificates are separate from the electrical installation certificate.

Solar PV installations require both an Electrical Installation Certificate (EIC) for the AC wiring and a separate commissioning certificate for the PV system. If the installation is to qualify for the Smart Export Guarantee (SEG) payments, the installer must be MCS (Microgeneration Certification Scheme) certified, and an MCS certificate must be issued.

Amendment 4 (A4:2026) introduced Regulation 530.3.201, which requires installers and designers to determine whether a unidirectional or bidirectional protective device is appropriate for the application. For solar PV and battery storage installations this is particularly relevant: where fault current may flow in either direction through a protective device (for example through MCBs or RCBOs in the consumer unit), a bidirectional device must be selected, or a unidirectional device must be installed in the correct orientation as marked. All protective devices in the consumer unit — including those marked with 'in'/'out' or 'line'/'load' arrows — must be checked for suitability before commissioning.

PAT testing (Portable Appliance Testing) is the in-service inspection and testing of electrical equipment, including portable appliances, movable equipment, and IT equipment. While there is no single regulation that mandates PAT testing by name, the Electricity at Work Regulations 1989 and the Health and Safety at Work etc. Act 1974 require all electrical equipment to be maintained in a safe condition.

PAT testing involves a visual inspection (checking for damage, frayed cables, missing earth pins, cracked enclosures) followed by electrical tests (earth continuity, insulation resistance, and in some cases, a leakage current test). Results are recorded on PAT testing labels and in a register. Elec-Mate's PAT testing module includes barcode/QR scanning, batch testing, pass/fail labelling, and a full register with export capability.

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