| Electric shock or burns from contact with live conductors at the consumer unit and on the existing circuit (live services) | The operative (electric shock, burns, death) and householders who could touch exposed terminals | Competent, qualified electrician. Insulated tools. Voltage indicator and proving unit. | 3×5=15 | Work dead as the rule, under the electrical isolation permit (Electricity at Work Regulations 1989, Regulation 4 and 14). Isolate at the main switch, lock off, label, and prove dead using a voltage indicator proved before and after use. Cover any live parts left exposed. Keep the consumer unit cover closed whenever unattended. Insulated, GS38-compliant test probes for any live tests. Insulated gloves and eye protection only as a back-up. | Medium |
| Supply re-energised by mistake while the work is in progress, or by a householder switching it back on | The operative (electric shock, fatal injury) | Isolation permit. Lock-off kit. Warning labels. | 3×5=15 | Personal lock on the main switch with the key held by the operative. Warning labels on the consumer unit. Brief all householders before isolating that nobody touches the consumer unit or switches anything back on. Take the lock key with you if leaving the consumer unit. Re-prove dead on return. Remove the locks only when the work is complete and tests are done. | Medium |
| Striking buried or concealed services (electric cables, gas and water pipes) when drilling the wall or fixing the charger and containment (live services) | The operative (shock, burns, flooding or gas release) and the householders (loss of services, fire, gas escape) | Cable detector. SDS drill. Competent operative. | 3×4=12 | Scan the wall and route with the cable detector before drilling and mark the results. Ask the householder about known pipe and cable runs. Use the householder's plans if they have them. Avoid zones near sockets, switches and meters. Use a drill with a small pilot hole first. If any service cannot be ruled out, move the fixing point. Know where to isolate the gas, water and electricity before you start. Safety glasses as back-up. | Medium |
| Occupied house: householders, children, elderly relatives, pets and visitors in and around the work area, and loss of power to the home | Mr & Mrs Harding, their family, visitors and pets (trips, contact with tools or open consumer unit, loss of power to freezers, heating or medical equipment) | Householder consulted. Short job duration of 1 day. | 3×3=9 | Agree an exclusion zone around the driveway work area and keep the consumer unit area closed off while open. Keep tools, cable and chemicals out of reach of children and pets. Agree the power-off time and duration with the householders in advance and ask about any vulnerable occupants and equipment that needs power. Plan to keep the power off for as short a time as possible. Keep access and escape routes in the house clear. Tell householders to keep clear until the work is done and the unit is closed. | Low |
| Respirable crystalline silica (RCS) dust from drilling the masonry/brick/block/render wall with the SDS drill | The operative and anyone nearby, including householders, breathing the dust (long-term lung disease, silicosis, lung cancer) | Short duration of drilling. External work in open air. | 3×4=12 | Plan the work to reduce drilling, for example by reusing existing holes and fixing points where suitable. Use on-tool extraction (M-class or H-class vacuum) or water suppression on the SDS drill. Keep others away from the drilling area and close windows and doors nearby. Clean up with an H-class or M-class vacuum, never dry sweeping or compressed air. Then RPE with an assigned protection factor of at least 20 (FFP3 disposable or equivalent), face-fit tested and worn clean shaven. Follows the Control of Substances Hazardous to Health Regulations (COSHH) 2002 and HSE Construction Information Sheet CIS36 Construction dust. The workplace exposure limit for RCS is 0.1 mg/m3 (8-hour TWA) in HSE EH40/2005. | Medium |
| Disturbing unidentified asbestos-containing materials when drilling or making holes through existing walls, soffits, textured coatings or boxing around the consumer unit | The operative and the householders (asbestos fibre inhalation causing long-term serious lung disease) | Competent operative. Householder consulted. | 2×5=10 | Before work starts, check the client's asbestos register or management survey for the work area, as the age of the building is not confirmed (Control of Asbestos Regulations 2012, Regulation 5). Where the register does not cover the area, or there is no register and the house is pre-2000, arrange a refurbishment survey of the area before drilling or disturbing the fabric. Stop-work rule: if suspect material is found, stop, keep people away, do not clean up and report it to the householders and the office before work carries on. Do not restart until the material is identified. Do not assume asbestos is present: this is a check to be made. | Medium |
| Fall from the step ladder when working at the wall, soffit or consumer unit | The operative (fractures, head injury) | Step ladder in good condition. Competent operative. | 3×4=12 | Set the charger at a height that can be reached without over-reaching. Check the step ladder before use and use it on firm, level ground with the feet checked, not on loose gravel or wet paving. Keep three points of contact and no over-reaching. Short-duration, light work only. Use a platform step if one is available. Stop and re-position rather than stretch. Work at Height Regulations 2005 applies. Do not use in strong winds. Sturdy footwear as back-up. | Medium |
| Manual handling of the charge point unit, cable drum, SDS drill and tool bags | The operative (back, shoulder and muscle injury) | Light loads. One operative. | 2×2=4 | Assess the loads and use a trolley or carry smaller loads in more than one trip. Cut the cable in sections where practical. Plan the route from the van to the wall. Keep the load close to the body and avoid twisting. Ask the householder or get help for any awkward lift (Manual Handling Operations Regulations 1992). Gloves as back-up. | Low |
| Noise and hand-arm vibration from SDS drilling into masonry | The operative (hearing damage, hand-arm vibration), and householders nearby (noise disturbance) | Short drilling time. Modern SDS drill. | 2×2=4 | Keep drilling to the minimum number of holes and use the correct sharp bits so the drill is not forced. Agree drilling times with the householders. Check the tool's vibration rating and keep trigger time low (Control of Vibration at Work Regulations 2005). Assess the noise and keep exposure low (Control of Noise at Work Regulations 2005). Take breaks between holes. Ear defenders (BS EN 352) when drilling. | Low |
| Slips, trips and falls from trailing cables, tools and materials on the driveway and in the house, and wet surfaces | The operative, householders, children and visitors (sprains, fractures, bruising) | Tidy working. Householder briefed. | 3×2=6 | Keep a defined work area and keep the cable run off walkways. Route the supply to the consumer unit away from doors and use cable protectors where it must cross a path. Tidy waste and offcuts as the work goes on. Use cones or tape around the work area. Keep the house route clear. Do not leave the drill cable trailing. Non-slip footwear (BS EN ISO 20345) as back-up. | Low |
| Vehicles moving on the domestic driveway, including the household's own vehicle and the EV when connected | The operative, householders and children (struck by a vehicle, crushing) | Householder consulted on vehicle use. | 2×4=8 | Agree with the householders that no vehicle moves on or off the driveway while work is going on, with keys held by the householder. Park the work van so it does not block the road or the driveway, with the operative's route clear. Use cones and tape to mark the work area. Hi-vis if the road or shared access is used. | Low |
| Incorrect earthing arrangement or missing PEN-fault protection leading to shock risk on the charging cable or vehicle body, or fire from poor terminations | Householders and anyone touching the vehicle or charger in future (electric shock, fire) | Qualified electrician working to BS 7671. Testing equipment. | 2×5=10 | Check the supply earthing arrangement before design. Install the PEN-fault protection method suitable for it, as required by BS 7671 Section 722 and the charger manufacturer's instructions. Select a protective device (RCBO) and cable size to the manufacturer's data and BS 7671. Torque terminations to the manufacturer's value. Carry out full inspection and testing, record results on the certificate and check the charger works and trips as designed before handover (Electricity at Work Regulations 1989). | Medium |
| Cuts, eye injury and flying debris from stripping cable, cutting trunking and drilling | The operative (cuts, eye injury) and anyone close by | Competent operative. Sharp, well-maintained tools. | 3×2=6 | Use proper cable strippers and keep knives to a minimum with a retractable blade. Cut trunking with the correct tool and file off sharp edges before fixing. Keep others away from the work area. Safety glasses (BS EN 166) and cut-resistant gloves (BS EN 388) as back-up. | Low |
| Wet, cold or windy weather when working externally on the wall and driveway | The operative (slips, cold, wet kit and electrical equipment, falls from the step ladder in wind) | Short job. Weather checked. | 3×2=6 | Check the forecast before starting and rearrange the external work if there is heavy rain, lightning or strong wind. Keep electrical equipment and the open consumer unit dry. Do not make external terminations in the rain. Use a cover or temporary shelter when needed. Take breaks inside the house with permission. Weatherproof clothing as back-up. | Low |
| Lone working by a single operative in a householder's property and on the driveway | The operative (delayed help after shock, fall or injury) | Householders are at the property. Mobile phone. | 2×4=8 | Tell the office the start time, the site address and the planned finish. Agree a check-in time. Tell the householders where the operative is working and what to do in an emergency, including who to call. Keep a charged mobile phone on the operative at all times. Carry a first aid kit. Where the householder is not at home, rearrange the live parts of the job. | Low |