Electrical Hook-Up Risks & EHU Safety: Insurance Implications (UK Guide)

Introduction: why EHU claims happen

Electrical hook-ups look simple: plug in, power up, job done. In reality, EHUs combine outdoor exposure, heavy usage, mixed-quality equipment and human error. Add rain, mud, extension leads, DIY repairs and overloaded appliances, and you have the recipe for:

• Electric shock and burns

• Cable overheating and fires

• Damage to caravans, motorhomes, boats, kiosks and site infrastructure

• Business interruption (closures, cordons, investigations)

• Third-party injury claims and legal costs

If you operate a campsite, holiday park, marina, event site, storage yard, glamping site, or provide temporary power to customers/tenants, EHU safety is not just “good practice”. It can directly affect whether a claim is paid, how quickly it’s settled, and what your premium looks like at renewal.

What counts as an Electrical Hook-Up (EHU)?

In UK leisure and temporary power settings, “EHU” usually means a dedicated external electrical supply point provided to a customer unit, commonly:

• Campsite/holiday park hook-up bollards supplying caravans and motorhomes

• Marina shore power pedestals supplying boats

• Temporary distribution boards supplying event traders, food units, cabins or welfare units

• Storage compounds providing power to parked units

Typical EHU systems include:

• A supply pedestal/bollard with sockets (often 16A or 32A)

• RCD protection (Residual Current Device)

• MCB/RCBO protection (overcurrent/earth leakage)

• Earthing arrangements and bonding

• Metering (sometimes)

• Cables and connectors (often customer-owned)

The main EHU risks (and how they turn into claims)

1) Water ingress and weather exposure

Outdoor electrics face rain, spray, condensation and flooding. Water ingress can lead to:

• Short circuits and arcing

• Nuisance tripping (leading to unsafe workarounds)

• Corrosion and overheating at terminals

• Electric shock risk if enclosures fail

Insurance implication: If an incident is linked to damaged seals, cracked enclosures, missing blanks, or poorly rated equipment for the environment, insurers may scrutinise maintenance records and inspection frequency.

2) Overloading and heat build-up

A single pitch can end up powering heaters, kettles, air fryers, battery chargers, dehumidifiers and more. Overloading can cause:

• Overheated plugs and sockets

• Melted connectors

• Cable insulation failure

• Fires in bollards, distribution boards, or inside the unit

Insurance implication: Overload-related fires often trigger questions about circuit design, protective devices, signage, customer guidance, and whether staff intervened when repeated tripping occurred.

3) Poor-quality or damaged customer cables

Many incidents start with the customer’s extension lead:

• Undersized cable for the load

• Coiled cable left on a drum (heat can’t dissipate)

• Cuts, crushed sections, taped repairs

• Incorrect connectors or DIY modifications

Insurance implication: Even if the customer’s cable is at fault, you may still face a liability claim if your site failed to set rules, check obvious defects, or provide safe alternatives.

4) Incorrect RCD/RCBO protection or nuisance tripping

RCDs save lives, but nuisance tripping can push people into risky behaviour:

• Bypassing protection

• Using adapters to “make it work”

• Sharing sockets or daisy-chaining

Insurance implication: Insurers like to see modern protection devices, documented testing, and a clear process for dealing with repeated trips (rather than “reset and hope”).

5) Earthing and bonding issues

Faulty earthing can turn a minor fault into a serious shock hazard. Risks include:

• Incorrect earthing arrangements for the installation

• Loose earth connections

• Corrosion at terminals

• Misunderstanding of shore power earthing in marine settings

Insurance implication: Earthing failures can lead to severe injury claims. Expect close examination of installation certificates, periodic inspection reports, and contractor competence.

6) Mechanical damage and vandalism

Bollards and pedestals are exposed to:

• Vehicle impact (cars, vans, site machinery)

• Strimmers and grounds maintenance damage

• Vandalism and tampering

• UV degradation and brittle plastics

Insurance implication: Property claims may hinge on whether protective barriers existed, whether damage was reported and isolated quickly, and whether the equipment was fit for purpose.

7) Temporary power and event set-ups

Events add complexity:

• Rapid installation and removal

• Multiple contractors

• Long cable runs and trip hazards

• Wet ground and crowd movement

Insurance implication: Temporary electrics are a common source of public liability claims. Insurers often expect method statements, competent contractors, and documented checks before energising.

The legal and standards backdrop (UK)

You don’t need to be an electrician to manage risk, but you do need to understand the framework that insurers expect you to follow.

Commonly referenced UK requirements include:

• Electricity at Work Regulations 1989 (EAWR): requires electrical systems to be maintained to prevent danger.

• Health and Safety at Work etc. Act 1974: general duty to protect employees and others.

• BS 7671 (IET Wiring Regulations): the key standard for electrical installations.

• HSE guidance on electrical safety and safe use of electrical equipment.

Insurance implication: Insurers don’t just look for “we try our best”. They look for evidence of a system: competent installation, periodic inspection, documented maintenance, and incident controls.

Practical EHU safety controls insurers like to see

1) Installation quality and certification

• Use competent electrical contractors.

• Keep installation certificates and any design documentation.

• Ensure equipment is suitably rated (IP rating, corrosion resistance, mechanical protection).

Keep on file: electrical installation certificates, commissioning documents, as-built drawings (if available), and contractor details.

2) Periodic inspection and testing (PIT) for the fixed installation

• Schedule periodic inspection/testing appropriate to usage and environment.

• Address remedial actions promptly and document completion.

Why it matters: In claim scenarios, insurers often ask: “When was it last inspected? What defects were found? What did you do about them?”

3) Routine checks by staff (simple, repeatable)

Create a checklist staff can do without tools:

• Visual check of bollards/pedestals for cracks, missing covers, scorch marks

• Check sockets and doors close properly

• Check signage is present and legible

• Check for obvious cable damage on occupied pitches (where practical)

• Record and isolate any suspect point immediately

4) RCD testing regime

• Follow manufacturer guidance.

• Encourage customers to test their RCDs (where appropriate) and provide simple instructions.

• Record your own routine tests for site equipment.

5) Clear customer rules (and enforce them)

Publish simple, non-negotiable rules:

• Only use purpose-made EHU leads of suitable rating

• No domestic multiway extensions outdoors

• Fully unwind cable drums before use

• No taped repairs or damaged leads

• No adapters that defeat weather protection

• Report repeated tripping immediately

Insurance implication: Rules reduce liability exposure and show you took reasonable steps.

6) Load management and signage

• State the maximum amperage per pitch clearly.

• Provide guidance on high-load appliances.

• Consider metering or load monitoring on higher-risk sites.

7) Safe isolation and lock-off procedures

When something looks wrong, speed matters:

• Train staff on safe isolation (what they can and cannot do).

• Use lock-off where appropriate.

• Keep a clear escalation path to a qualified electrician.

8) Fire safety integration

EHU risk management should connect to your wider fire controls:

• Suitable extinguishers and staff training (where appropriate)

• Clear access for emergency services

• Incident reporting and near-miss logging

• Regular review of high-risk pitches/areas

Common EHU incident scenarios (and how to reduce them)

Scenario A: Melted plug at the bollard

Typical cause: poor contact, corrosion, overload, damaged socket.

Prevention: routine visual checks, replace worn sockets, ensure correct protective devices, educate customers on load limits.

Scenario B: Customer cable overheats on a drum

Typical cause: high load with cable coiled.

Prevention: signage at hook-up points, staff reminders at check-in, include in welcome pack.

Scenario C: Repeated tripping leads to unsafe bypass

Typical cause: moisture ingress, faulty appliance, or cable fault.

Prevention: policy: after X trips, staff attend; isolate point; require cable/appliance check; do not allow “temporary fixes”.

Scenario D: Shock incident near a wet area

Typical cause: damaged cable, poor earthing, water ingress.

Prevention: zoning and drainage, robust IP-rated equipment, strict cable rules, rapid isolation, documented inspections.

Insurance implications: what policies can be affected?

EHU incidents can touch multiple covers. The exact wording varies by insurer, but typically:

Public Liability (PL)

Covers injury or property damage to third parties arising from your business activities.

EHU relevance: shocks, burns, trips from cables, damage to customer units due to supply faults.

Insurer focus: risk assessments, inspection/testing records, signage, contractor competence, incident response.

Employers’ Liability (EL)

Covers injury/illness claims from employees.

EHU relevance: staff resetting supplies, handling damaged equipment, working in wet conditions.

Insurer focus: training, safe systems of work, what tasks staff are permitted to do.

Property / Material Damage

Covers your site infrastructure (bollards, distribution boards, cabling, buildings).

EHU relevance: fires in pedestals, damage from impact, electrical faults causing wider site damage.

Insurer focus: maintenance, protection against vehicle impact, prompt repair, compliance with standards.

Business Interruption (BI)

Covers loss of income following insured damage.

EHU relevance: closures after a fire, loss of pitches/berths, cancelled events.

Insurer focus: whether the underlying damage is covered and whether risk controls were reasonable.

Equipment Breakdown / Engineering

May cover sudden mechanical/electrical breakdown of specified equipment.

EHU relevance: failures of distribution equipment, switchgear, metering.

Insurer focus: inspection regimes and whether the equipment is insured under the section.

Cyber (sometimes relevant)

If metering, access control, or site management systems are connected, a cyber event could disrupt power management.

EHU relevance: less common, but worth considering on larger sites.

What can cause claim delays or disputes?

Insurers typically don’t expect perfection, but they do expect evidence. Common friction points include:

• No records of periodic inspection/testing

• Known defects not repaired

• Unclear responsibility split between site and customer equipment

• Lack of signage or customer guidance

• Staff carrying out electrical work beyond competence

• Poor incident documentation (no photos, no witness notes, no timeline)

Documentation checklist (make claims easier)

Keep a simple “EHU safety file” (digital is fine):

• Electrical installation certificates and any upgrades

• Periodic inspection and test reports (and proof of remedial works)

• Routine visual check logs

• RCD test logs (where applicable)

• Contractor list and call-out records

• Customer EHU rules (website + check-in pack)

• Incident/near-miss reports with photos

• Training records for staff (what they can/can’t do)

If a claim happens, this file can be the difference between a smooth settlement and months of back-and-forth.

Risk assessment: what to include

Your EHU risk assessment should cover:

• Who is at risk (customers, staff, contractors, children)

• Environmental factors (water, salt air, flooding, ground conditions)

• Electrical hazards (shock, fire, arcing)

• Cable management and trip hazards

• Inspection/testing frequency

• Controls for repeated tripping

• Emergency response and isolation

• Contractor management for temporary installs

Quick customer-facing copy you can use (welcome pack / signage)

Use plain English and keep it short:

• Maximum supply per pitch: [X] amps. High-load appliances may trip the supply.

• Use a purpose-made EHU lead in good condition. No taped repairs.

• Fully unwind cable drums before use.

• Keep connections off the ground and protected from water.

• If your supply trips more than once, contact reception. Do not attempt repairs.

Conclusion: safer hook-ups, stronger insurance outcomes

EHU incidents are rarely “bad luck”. They’re usually a chain of small failures: worn sockets, water ingress, overloaded leads, unclear rules, rushed resets. The good news is that the controls are straightforward: competent installation, regular inspection, simple staff checks, clear customer rules, and solid documentation.

From an insurance perspective, those same controls help you demonstrate reasonable care, reduce the likelihood of severe injury claims, and make any claim far easier to evidence and settle.

Call to action

If you provide electrical hook-ups to customers—whether on a campsite, marina, event site or temporary location—review your EHU safety controls and insurance cover together.

Speak to a specialist commercial broker who understands outdoor electrical risks, liability exposures and the documentation insurers want to see. It’s often a quick conversation that can prevent a very expensive problem later.