Electrical Safety Procedures: A Practical Workplace Guide

The challenge is that electrical safety covers a lot of ground: from risk assessments and safe systems of work to routine testing, maintenance schedules, and emergency response. Regulations like the Electricity at Work Regulations 1989 and BS 7671 set clear expectations, but knowing how to apply them in practice, day to day, on real sites, is where many businesses and property owners struggle. At Electrical Testing London, our engineers see the consequences of poor electrical safety procedures regularly during inspections and EICR assessments across London and the South East.

This guide breaks down the core electrical safety procedures you need to implement in any workplace or managed property. You'll find practical steps, regulatory context, and clear guidance on when professional testing is required, so you can move from awareness to action with confidence.

What UK law and standards require

UK electrical safety is governed by a framework of legislation and technical standards that apply to different settings and duty holders. Understanding which rules apply to your situation is the first step toward building electrical safety procedures that hold up under scrutiny. Failing to comply doesn't just put people at risk; it exposes you to enforcement action, significant fines, and in serious cases, criminal prosecution.

The Electricity at Work Regulations 1989

These regulations, enforced by the Health and Safety Executive (HSE), set the legal baseline for electrical safety in all workplaces across Great Britain. Under the regulations, duty holders must ensure that electrical systems are designed, installed, and maintained to prevent danger. Crucially, the regulations place duties on both employers and employees, so responsibility isn't limited to those at the top of an organisation.

The HSE states that "all electrical systems shall be maintained so as to prevent, so far as is reasonably practicable, such danger", this maintenance duty is ongoing, not a one-time action.

Regulation 4 requires that electrical equipment is suitable for its intended use and that systems are of sufficient strength and capability for the work being carried out. Regulation 14 covers working on or near live conductors, which is only permitted in very specific, justified circumstances. In practice, you need written justification before anyone works live, and that justification must be documented and retained.

BS 7671: IET Wiring Regulations

BS 7671 is the national standard for electrical installation design, construction, and verification in the UK. The current edition is the 18th Edition, including Amendment 2 (2022). While BS 7671 is not legislation itself, compliance with it is widely accepted as the benchmark for demonstrating that an installation meets the safety requirements of the Electricity at Work Regulations.

Any new installation or alteration must comply with BS 7671, and existing installations should be periodically inspected and tested against it. The frequency of inspection depends on the type of premises, as shown below:

The Electrical Safety Standards in the Private Rented Sector (England) Regulations 2020

Landlords in England have a specific legal obligation under these regulations to obtain a satisfactory Electrical Installation Condition Report (EICR) at least every five years, or at each change of tenancy if that happens sooner. The report must be carried out by a qualified and competent person, and landlords must provide a copy to existing tenants within 28 days of the inspection and to new tenants before they move in. Failure to comply can result in a local authority issuing a remedial notice and, if ignored, a fine of up to £30,000. Scotland and Wales have equivalent requirements under their own separate regulations, so if you manage properties outside England, check the rules that apply to your specific location.

Step 1. Define roles and assess electrical risk

Before any physical work begins, you need to be clear on who is responsible for electrical safety and where the risks actually lie on your premises. Without defined roles, decisions get missed, accountability disappears, and your electrical safety procedures break down before they even start.

Assign a duty holder and competent person

Under the Electricity at Work Regulations 1989, someone in your organisation must be designated as the duty holder with formal responsibility for electrical safety. In smaller businesses, this is often the owner or facilities manager. In larger organisations, it may be a dedicated electrical safety officer or appointed responsible person. Whoever fills this role must be competent, meaning they have the training, knowledge, and experience to understand the risks involved and act on them correctly.

The HSE defines a competent person as someone who has "sufficient technical knowledge or experience to prevent danger and, where appropriate, injury".

Alongside the duty holder, you should appoint a qualified person to carry out or oversee any electrical inspection or testing work. This person must hold relevant qualifications, such as City & Guilds 2391 or equivalent, and carry adequate insurance.

Conduct a structured electrical risk assessment

Your risk assessment should identify every electrical hazard on the premises, from fixed installations and portable appliances to temporary supplies and overhead lines. Work through the assessment systematically, using the template below as a starting point:

Record your findings in writing and review the assessment whenever the premises change, new equipment is introduced, or an incident occurs. A risk assessment that sits in a filing cabinet and never gets updated provides no real protection to anyone working on or near electrical systems.

Step 2. Isolate supplies and prove dead

Isolation is not just about switching something off. It is a structured sequence of actions designed to ensure that no electrical energy can reach the part of the system you are working on. Cutting corners here is one of the most common causes of fatal electrical accidents in UK workplaces, and your electrical safety procedures must treat this step with absolute seriousness.

Follow the isolation sequence

Your team should follow a fixed isolation sequence every single time, without exception. Ad hoc approaches lead to missed steps, and missed steps lead to serious injuries. The sequence below applies to most low-voltage fixed installation work:

1. Identify the correct circuit or equipment to be isolated.
2. Switch off the supply at the relevant isolator or circuit breaker.
3. Apply a lock-off device to the isolator to prevent accidental re-energisation.
4. Attach a warning label clearly stating that work is in progress and the supply must not be restored.
5. Keep the key in your possession for the duration of the work.

Never rely on a colleague to keep the supply isolated. Physical lock-off is the only reliable control.

Where multiple workers are involved, use a multi-lock hasp so every person on the job applies their own padlock. The supply cannot be restored until every padlock is removed, which means no single individual can inadvertently re-energise the circuit while another person is still working.

Prove the circuit is dead

Once you have isolated the supply, you must verify absence of voltage before touching any conductors. Use a two-pole voltage indicator that complies with GS38, the HSE guidance on test equipment for electricians. Check the tester is working on a known live source before and after testing the isolated circuit.

Work through this proving sequence on all conductors, including phase, neutral, and earth, at the point where you intend to work. A single probe test is not sufficient. Document the result, including the instrument used, its calibration status, and the date of the test, as part of your site records.

Step 3. Control the work and prevent common hazards

Once isolation is confirmed, the work itself needs active management throughout. Electrical safety procedures do not stop at lock-off; they extend to everything that happens while the circuit remains de-energised and people are physically working. Uncontrolled access, poor communication, and ignored environmental conditions are responsible for a significant proportion of on-site electrical incidents that occur even after isolation has been carried out correctly.

Use a permit to work for high-risk tasks

For anything beyond routine, low-risk maintenance, a formal permit to work (PTW) system adds a critical layer of control. A PTW is a documented authorisation that confirms the work scope, the person carrying it out, the isolation status, and any additional safety measures in place before work starts. The authorising person and the worker both sign it, and the permit is cancelled and returned when the job is complete.

A permit to work is not bureaucracy for its own sake; it creates a clear record that every safety check was completed before work started.

Use the following template as a starting point for your own PTW system:

Manage the most common electrical hazards

Three hazards consistently appear in HSE incident reports for electrical work: working in damp or wet conditions, using damaged or unsuitable tools, and working in confined spaces where movement is restricted and errors are more likely. Address each one before the job starts, not after something goes wrong.

Check that all hand tools and test equipment are rated for the voltage they may encounter, visually inspected before use, and removed from service immediately if any damage is found. For damp environments, confirm your equipment carries an appropriate IP rating for the conditions on site.

Step 4. Inspect, test, and maintain equipment safely

Testing and inspection are the evidence layer of your electrical safety procedures. They confirm that your installations and equipment remain safe between planned work intervals and give you documented proof of compliance that you can present to insurers, local authorities, or the HSE if you are ever asked to demonstrate your approach.

Carry out visual inspections before use

Visual inspection is the most frequent check in your safety regime, and it costs nothing beyond a few seconds of attention. Before using any portable electrical appliance or tool, check the cable for cuts, crushing damage, or exposed conductors; check the plug for cracked casings or loose pins; and check that the equipment itself shows no signs of heat damage, moisture ingress, or physical impact. Remove any item that fails a visual check from service immediately and label it clearly so no one else picks it up and uses it before it has been formally assessed and repaired or replaced.

A damaged cable that passes a PAT test today can develop a fault tomorrow, so visual inspection before every use remains a non-negotiable baseline.

Schedule formal testing at the right intervals

Formal testing goes beyond what the eye can see and requires calibrated test instruments and a qualified person to carry it out correctly. Use the table below to set your testing schedule based on equipment type and environment:

Keep records that support your compliance

Every test result needs to be recorded and retained in a format you can retrieve quickly. Your records should include the date of the test, the name and qualifications of the person who carried it out, the instrument serial number, the result, and any remedial action taken or recommended. A simple asset register tied to your testing schedule works well for smaller premises, while larger sites benefit from dedicated compliance management software to track due dates and outstanding actions across multiple locations.

Keeping your procedures up to date

Electrical safety procedures are not a one-time document you file away and forget. Regulations change, equipment ages, premises get modified, and new hazards appear that your original assessment never anticipated. Review your full safety documentation at least annually, and immediately after any incident, near-miss, change of use, or significant new installation. Set calendar reminders for every testing due date so nothing slips past you in a busy period.

Your records are only useful if they reflect the current state of your premises, so assign someone specific to own each review cycle rather than leaving it as a shared responsibility that nobody prioritises. Build a simple checklist that covers risk assessment currency, EICR expiry dates, PAT testing schedules, and permit to work records. If you are unsure whether your current compliance position is solid, the practical next step is a professional inspection. Request a quote from Electrical Testing London and get a clear picture of where you stand.