The RCD trips while the washing machine runs. A socket feels warm. You may also plan to let, buy, or renovate a Swansea property.
These are sensible reasons to ask a qualified electrician to assess the installation.
For most owner-occupied homes in Swansea, have your home’s wiring inspected with an Electrical Installation Condition Report (EICR) at least every 10 years. Rented homes in Wales need testing at intervals of no more than five years. Book sooner after major changes, flood damage, or warning signs.
Swansea inspection intervals: 5 years or 10 years?
The usual interval is 10 years for an owner-occupied home. It is no more than 5 years for a rented home in Wales.
An EICR tests the fixed installation. This includes cables, sockets, switches, the consumer unit, and safety devices.
Choose the interval for your property
A home with unknown changes, old wiring, or heavier demand may need an earlier check. This is often within 3 to 5 years when an earlier report flags risks or limits.
| Property situation | Usual next inspection | Earlier trigger |
|---|
| Owner-occupied home | Within 10 years or on sale | Faults, alterations or damage |
| Rental home in Wales | No more than 5 years | New tenancy, defect or report advice |
| Older or unknown installation | Often 3 to 5 years after assessment | No RCD, old fuse box or DIY work |
| EV charger, heat pump or extension | Before the new work | Supply capacity or earthing concern |
Warning signs need faster action
A burning smell, hot socket, brown marks, electric shock, or repeated RCD trip needs prompt attention. Do not keep resetting a tripping RCD. Switch off the affected circuit, if safe, and call a qualified electrician.
The 3 to 5, 5, and 10-year periods have different uses. They are not competing rules.
In Wales, rental EICRs must be renewed at intervals of no more than five years. Welsh landlord electrical safety rules set this duty.
For owner-occupied homes, UK guidance commonly uses a 10-year interval. This applies where normal home use creates no worrying history.
A 3 to 5-year interval is based on risk. It is not a rule for every home.
It may suit homes with old wiring, repeat faults, damp, extensive DIY changes, or heavy demand. An earlier report may also set a shorter date.
Online advice from other countries may follow different rules. Check the last EICR and Welsh requirements first.
Owners: age and demand decide the real risk
Wiring age alone does not show whether a Swansea home needs rewiring. Test results, capacity, and safety protection matter more.
Older wiring does not always mean rewire
An EICR may find one damaged circuit, poor earthing, or missing RCD protection. These faults can sometimes be fixed without rewiring the whole home.
An RCD is a safety switch. It cuts power quickly when it detects a dangerous fault.
Older fuse boxes, fabric-covered cables, aluminium cables, rodent damage, and damp areas need close checks. The electrician checks them against BS 7671 Requirements for Electrical Installations.
The most common mistake is treating every old installation as a full rewire job. A proper test can separate a repairable fault from a wider problem.
Check capacity before adding new loads
Before adding an EV charger, heat pump, electric shower, loft conversion, or extension, ask for checks. The electrician should check supply capacity, circuit load, earthing, and consumer unit space.
They should also check cable size and RCD protection. Think of the supply like a water pipe.
Too many high-demand items can overload the electrical system. A larger supply or safer arrangement may be needed first.
A simple inspection timing route
Owner occupier
Book by 10 years.
Welsh rental
Book within 5 years.
Damage or major change
Book before the routine date.
Danger sign
Isolate if safe and seek urgent help.
An EICR tests fixed wiring, not every appliance
An EICR checks fixed wiring through visual checks and electrical tests. It records faults with observation codes.
It is not PAT testing. It also does not automatically prove that a home needs rewiring.
Observation codes show urgency
A C1 code means danger is present. A C2 code means a fault could become dangerous.
An FI code means further investigation is needed. A C3 code suggests an improvement.
A C3 code alone does not make a report unsatisfactory. C1, C2, and FI findings need action or further checks.
Sampling and access must be declared
The report must state its scope and limits. It must also list sampled circuits and inaccessible items.
Furniture, floors, and sealed areas can block access. This can stop the electrician from testing every socket or hidden cable.
An electrical wiring safety check involves more than looking at sockets. The electrician normally completes visual checks and safe dead and live tests.
These tests check protective conductor continuity, insulation resistance, polarity, earthing, and bonding. They also check earth-fault loop impedance and RCD operation.
A consumer unit is the UK name for an electrical panel. Its check covers breakers, circuit labels, the enclosure, overheating, and suitable safety devices.
These tests assess the fixed installation. They do not expose every cable or require rewiring.
A rewiring assessment is needed only where tests show damaged insulation or unsafe circuit design. It may also be needed where capacity is too low or faults cannot be reliably repaired.
Avoid unsafe shortcuts and weak paperwork
Choose a competent electrician and ask what the price covers. Check recognised schemes such as NICEIC, NAPIT, or ELECSA.
Ask for the complete report
Ask for the full EICR. It should include scope, limits, test results, observation codes, actions, and the next inspection date.
The report should also show the electrician's details. Keep it with other property records.
Heat, smells, discolouration, and shocks are warnings. Avoid touching damaged equipment.
Isolate power only if it is safe. Seek urgent help when needed.
The 10-year owner-occupier guide does not replace urgent action during electrical danger. It also does not override Welsh rental duties. Commercial premises, shared areas, special-use buildings, and harsh conditions may need shorter intervals. The interval depends on use, risk assessment, and the previous report.
If your Swansea property lacks a report, has repeat RCD trips, or needs high-load work, ask for an EICR scope in writing. Do this before the visit.
Before booking, ask for the electrician's business details and inspection scope. Ask about access needs and their competence to inspect domestic installations under BS 7671.
Scheme registration can help you check an electrician. It does not replace checking experience, insurance, and the report they will give.
Keep the EICR, safety certificates, invoices, test results, and repair records. These papers can help when you sell, let, or manage the property.
For extensions, replacement consumer units, or new circuits, check if Building Regulations notification applies. Ask the local authority or the installer's competent-person scheme before work starts.
Common questions
Does a house need rewiring after 25 years?
No. Book an EICR first, because rewiring depends on condition, safety devices, cable condition, capacity, and test results.
How often should a consumer unit be checked?
Check it during the normal EICR. This is usually within 10 years for owners and five years for Welsh rentals.
Book sooner if it overheats, is damaged, or trips repeatedly.
Do electricians test every socket in an EICR?
Not always. The report should state the sampling method, access limits, and any untested sockets, circuits, or hidden areas.
Is PAT testing the same as an EICR?
No. PAT testing checks portable appliances, while an EICR checks fixed wiring, sockets, and the consumer unit.
Can I install an EV charger before an EICR?
Check electrical capacity and earthing before fitting an EV charger. Older homes may need changes to protection, cables, or the consumer unit first.
Book the right check for your property
For a Swansea owner-occupied home, use 10 years as the normal EICR interval. Book sooner after faults, changes, or heavier demand.
For a Welsh rental, keep a satisfactory report no more than five years old. This is a legal duty, not just good practice.
Ask for the full EICR, its scope, limits, test results, and observation codes. Act on C1, C2, or FI findings without delay.
