EV Charger Installation Risk Assessment: A Practical Guide for UK Electricians
EV charger installation is one of the fastest-growing workstreams for UK electrical contractors. Whether you are fitting a domestic 7 kW wall box or a commercial multi-bay charging unit, the job carries a combination of hazards that need a structured risk assessment before work begins — not a generic template filled in on the drive over.
Under Regulation 3 of the Management of Health and Safety at Work Regulations 1999, every employer and self-employed person must carry out a suitable and sufficient risk assessment. For EV charger installations this is rarely a single-hazard job, and your assessment needs to reflect that.
What a RAMS Looks Like for This Work
A RAMS (Risk Assessment + Method Statement) is the standard document for this type of installation work. The risk assessment identifies what could cause harm and to whom; the method statement sets out the safe sequence of work. Together they give your team, your client, and any principal contractor what they need to manage the job safely.
The Main Hazard Groups to Assess
1. Electrical Hazards
This is the dominant risk. EV charger installations typically involve:
- Isolation and connection to the consumer unit or distribution board
- Running new circuits, sometimes at 32 A or higher
- Testing and commissioning live equipment
Controls to consider (in hierarchy order):
- Eliminate: establish whether any part of the circuit can be completed with the supply fully isolated throughout
- Engineering: use approved voltage indicators and proving units before touching any conductors; lock-off/tag-off procedures at the supply
- Administrative: permit to work where the board cannot be fully isolated; two-person rule when working near live parts cannot be avoided
- PPE: insulated tools rated to the appropriate voltage category, arc-flash-rated gloves where live working is unavoidable
Competency matters here. EV charger installations must be designed, installed, inspected, and tested by a competent person. BS 7671 (the IET Wiring Regulations, 18th Edition) and the IET Code of Practice for Electric Vehicle Charging Equipment Installation set the technical benchmark the HSE would expect you to meet.
2. Work at Height
Fitting a wall box often means working on a ladder or podium steps, particularly on commercial premises with high masonry or in car parks with tall columns. The Work at Height Regulations 2005 apply whenever there is a risk of a fall that could cause personal injury — there is no minimum height threshold.
Controls:
- Avoid work at height where possible — position the charger at a height reachable safely from ground level
- Use a podium step or low-level platform in preference to a stepladder where practicable
- Inspect equipment before use; do not use damaged or uninspected ladders
- Ensure the base surface is firm and level; use a second person to foot a ladder if conditions require it
3. Excavation and Cable Trenching
Many installations — especially those serving car parks, driveways, or commercial forecourts — require trenching to run the supply cable underground.
Controls:
- Before any dig: check for buried services using a cable avoidance tool (CAT) and genny, and obtain utility records. Striking a buried gas or electricity main is a foreseeable fatal risk
- Trench walls shallower than 1.2 m can still collapse in poor ground — assess spoil placement and edge loading
- Use barriers and signage to keep pedestrians and vehicles clear of open excavations
- Backfill, compact, and reinstate surfaces promptly
4. Manual Handling
Charger units, cable drums, and switchgear can be heavy and awkward. Assess manual handling under the Manual Handling Operations Regulations 1992: consider whether mechanical aids (sack trucks, cable rollers) can reduce the load, and whether team lifts are needed.
5. Working in Occupied Premises
Domestic and commercial customers are often present. Consider:
- Segregation of the work area from the public and non-electrical workers
- Dust and noise from drilling (COSHH 2002 applies if you are generating respirable dust — silica from masonry drilling is a significant long-term inhalation risk; use dust suppression or extraction at source)
- Temporary loss of electrical supply and its effect on building occupants or critical systems
A Simple Risk Rating Framework
Use a likelihood × severity matrix to prioritise controls. A typical approach:
| Hazard | Likelihood (1–5) | Severity (1–5) | Risk Score | Key Control |
|---|---|---|---|---|
| Electric shock at board | 3 | 5 | 15 (High) | Full isolation + lock-off |
| Fall from ladder | 2 | 4 | 8 (Medium) | Podium step preferred |
| Cable strike during dig | 2 | 5 | 10 (High) | CAT scan + utility records |
| Manual handling injury | 3 | 3 | 9 (Medium) | Sack truck + team lift |
| Silica dust inhalation | 2 | 4 | 8 (Medium) | On-tool extraction |
Residual risk — the risk remaining after controls are applied — should be reduced to as low as reasonably practicable (ALARP).
CDM 2015 Considerations
If you are installing chargers as part of a wider construction project (a new car park, a commercial development), CDM 2015 may apply and additional duties around pre-construction information and F10 notification could be triggered. A standalone domestic wall-box installation would not ordinarily engage CDM.
Keeping Your Assessment Suitable and Sufficient
The HSE's test is whether the assessment is proportionate to the actual risks. A domestic single-charger fit takes far less documentation than a 50-bay commercial install, but both need something written. Review and update the assessment if the scope changes — for example, if you discover asbestos-containing materials in older consumer unit surrounds, work stops and a separate asbestos management process begins.
A well-constructed RAMS for EV charger installation protects your workers, satisfies your clients, and demonstrates the competence that the regulations require.