Emergency Electrician in Catford - When to Call and What to Expect

Published July 2026 | When You Need an Emergency Electrician

A homeowner in Catford notices the lights in the upstairs landing flickering every time someone turns on the kitchen kettle downstairs. At first it seems like one of those things older houses just do. But then, on a Wednesday evening, a faint burning smell starts drifting from the double socket near the front door - faint enough to second-guess, strong enough to make you stop and look. The main circuit breaker trips while the oven is on. The house goes dark. A quick reset brings the power back, but twenty minutes later it trips again, and this time the burning smell is stronger. This is not a quirk. This is an emergency, and the right call is to stop resetting the breaker and pick up the phone to an emergency electrician.

What Was Actually Going On

When our engineers attended this job in Catford, the fault was traced to an overloaded and partially failed consumer unit - the main fuse board that distributes power through the property. The house was a 1960s mid-terrace, and the consumer unit was the original installation: old-style rewirable fuses rather than modern circuit breakers, no residual current devices (RCDs) to protect against electric shock, and wiring that had been extended and modified piecemeal over the decades by various previous owners.

The burning smell was coming from a circuit inside the consumer unit itself. One of the fuse holders had developed a loose connection over time, and as the metal aged and expanded and contracted through thousands of heating and cooling cycles, the contact had deteriorated to the point where it was arcing - generating heat at the connection rather than just passing current. The flickering lights were a symptom of the voltage on that circuit dropping every time load increased elsewhere in the property. The tripping was the house doing its best to protect itself, but with rewirable fuses rather than modern RCDs, the protection was limited.

In Greater London properties of this age - terraces built across south-east London in the post-war decades - this kind of installation is not unusual. Catford has a significant stock of these houses, and many of them still have their original fuse boards. The components are not inherently dangerous when they are in good condition, but they age, and they were never designed to carry the electrical load of a modern home: phone chargers on every socket, a dishwasher, a tumble dryer, an electric shower, an induction hob. The gap between what the wiring was designed for and what it is being asked to do is the underlying problem.

Loose connections are, according to our engineers, one of the most common causes of emergency callouts in older residential properties. A connection does not have to fail completely to become dangerous - the partial failure, where current is still passing but through a degraded contact point, is often more hazardous because it generates heat without necessarily tripping a breaker. Left untreated, the heat builds up in an enclosed space, and the risk of an electrical fire becomes real.

How the Problem Was Resolved

The engineer's first step on arrival was a full inspection of the consumer unit and the circuits it fed. Using a visual inspection combined with a thermal assessment, it was clear that the faulty fuse holder was generating excess heat even with the circuit only lightly loaded. The immediate action was to isolate that circuit completely and establish which rooms it served - in this case, the ground floor ring main, which powered most of the downstairs sockets.

The short-term fix was to safely isolate the faulty circuit, restore power to the rest of the property, and make the installation safe for overnight use. The homeowner was advised not to use that circuit until the full repair was carried out. Temporary power for essential downstairs sockets was arranged by carefully redistributing load across other circuits.

The permanent repair, carried out the following day, was a full consumer unit replacement. The old rewirable fuse board was removed and replaced with a modern 18-way metal consumer unit with dual RCD protection and individual MCBs (miniature circuit breakers) for every circuit. All existing circuit connections were inspected, re-terminated where any looseness was found, and tested to current BS 7671 wiring regulations standards. An Electrical Installation Condition Report (EICR) was issued at completion.

A consumer unit replacement in a property like this typically takes five to seven hours for a competent electrician working alone, or three to four hours with two engineers on the job. The work requires the supply to be isolated at the meter for the duration, which means no power to the property during the installation. That timing was planned around the household's schedule - a consideration our engineers always discuss before starting work.

All notifiable electrical work of this type in England and Wales must be either inspected and certified by a local authority building control officer, or carried out by an electrician registered with a competent person scheme such as NICEIC or NAPIT. An unregistered electrician doing this work without building regulations notification is not legal, and you will not receive the correct certification. When you sell your property, the absence of that certification will become a problem. Always check registration before any electrician starts work on your consumer unit.

What This Cost and How Long It Took

Emergency electrical callouts in Greater London typically attract a call-out fee separate from the labour rate. For an out-of-hours emergency in the Catford area, expect to pay between 80 and 150 pounds as a call-out charge, with an hourly labour rate of between 70 and 110 pounds per hour on top of that. Rates vary between contractors, and some quote a fixed price for the emergency visit rather than hourly.

For the initial emergency visit - attendance, diagnosis, isolation of the faulty circuit, and making the installation safe - the total came to 195 pounds including parts. That covered roughly two hours on-site plus the call-out charge.

The full consumer unit replacement the following day cost 620 pounds including the new unit, all associated materials, labour, testing, certification, and building regulations notification. That is at the lower end of the typical range for this type of work in south-east London; a more complex property, or one where additional remedial work is discovered during the installation, can push the cost to 900 to 1,100 pounds. Get a written fixed-price quote before work starts, and make sure it explicitly includes certification and building regulations notification - some cheaper quotes exclude these and pass the cost on later.

Timeline from the initial emergency call to completed, certified installation: 28 hours. Emergency attendance on Wednesday evening, full installation completed by 5pm Thursday. That is a realistic timescale when you use a well-organised local contractor who carries common consumer units and materials in their van.

How to Spot the Same Issue in Your Home

Most electrical emergencies do not arrive without warning. The signs are usually present for weeks or months before a fault becomes critical. Knowing what to look for - and taking it seriously when you find it - can make the difference between a planned repair and a 2am emergency callout.

These are the warning signs our engineers most commonly find in Catford homes before a serious electrical fault develops:

1. Burning smell from sockets, switches, or the fuse board area. Any smell of burning plastic, hot metal, or a distinctive acrid electrical smell is an immediate red flag. Do not assume it is something else. Isolate the circuit if you can identify it and call an electrician the same day.
2. Flickering or dimming lights that are not bulb-related. If lights flicker when other appliances come on - particularly high-draw appliances like kettles, ovens, or showers - the cause is typically a voltage drop caused by a loose connection or an overloaded circuit.
3. Circuit breakers or RCDs that trip repeatedly. A breaker that trips once and does not trip again when reset may have been a transient fault. A breaker that trips repeatedly is telling you something is wrong. Do not keep resetting it and hope for the best.
4. Discolouration or scorch marks around sockets or switches. Any browning, blackening, or warping of socket faceplates indicates that heat has been generated at that point. Replace the socket and have the circuit checked.
5. Sockets or switches that are warm or hot to the touch. Sockets should be at room temperature. If one is noticeably warm, there is a connection problem inside or behind it.
6. A consumer unit with rewirable fuses rather than MCBs and RCDs. If your fuse board has wire fuses rather than switch-type circuit breakers, and particularly if there are no RCDs, your installation may be functional but it does not offer modern levels of protection. This is not automatically an emergency, but it is worth an EICR to establish the current condition of the installation.

The Voltrade GoFIX diagnostic tool can help you describe and document symptoms before an engineer visits - particularly useful for intermittent faults that are not present when the engineer arrives. Logging when faults occur, what appliances were in use, and which circuits were affected gives the attending electrician significantly more to work with.

Lessons - What Every Catford Homeowner Should Know

The homeowner in this case did the right things once the fault became undeniable. But there were earlier warning signs that could have prompted action sooner - the flickering lights had been present for several months before the burning smell appeared. Here is what our engineers would want every Catford homeowner to take away from this kind of job.

Take intermittent faults seriously. Electrical faults rarely appear fully formed from nowhere. They develop. An intermittent flicker or an occasional unexplained trip is the fault at an early stage, not a false alarm. Addressing it at that point means a smaller job, lower cost, and no emergency.

Know the age and condition of your consumer unit. If you bought or rent a property in Catford and you are not certain when the consumer unit was last inspected or replaced, the answer to that question matters. Consumer units installed before 2016 may not comply with current regulations, which require metal enclosures for fire safety. Units installed before the 1990s may not have RCDs at all. Neither situation requires immediate action, but an EICR - which typically costs between 150 and 300 pounds for a three-bedroom house - will tell you where you stand.

Understand what constitutes a genuine electrical emergency. A genuine electrical emergency is one where the fault poses an immediate risk of fire, electric shock, or complete loss of power to essential systems. That includes: burning smells from the installation, visible arcing or sparking, sockets or fuse boards that are hot to the touch, and situations where power cannot be safely restored. An emergency electrician callout is appropriate for these situations. A socket that has stopped working or a light fitting that needs replacing is not an emergency and can be scheduled as a normal job - a distinction that keeps emergency response times fast for those who need it.

Greater London properties vary enormously in electrical age. Catford has a mix of Victorian terraces, 1930s semi-detached houses, post-war council-era terraces, and more recent conversions and new builds. The age of the building does not always tell you the age of the wiring - properties are rewired at different points in their lives. The only way to know the actual condition of your electrical installation is an EICR from a qualified electrician. For landlords in Catford, an EICR is now a legal requirement at least every five years, or at every change of tenancy.

Related Questions

How do I know if my electrical fault is a genuine emergency or something that can wait?

A burning smell, sockets or switches that are hot to the touch, visible scorch marks, sparking, or a circuit breaker that trips repeatedly after being reset are all genuine emergencies that warrant calling an electrician immediately. A single socket that has stopped working, a light that flickers when it needs a new bulb, or a trip that does not repeat after a single reset are non-urgent faults that can be scheduled as a normal job. When in doubt, call and describe the symptoms - any reputable emergency electrician will tell you whether it can wait.

What should I do while waiting for an emergency electrician to arrive?

If you can identify the affected circuit on your consumer unit, switch it off at the breaker or fuse and leave it off. Do not use appliances on that circuit until the fault is resolved. If there is a burning smell that appears to be coming from inside a wall or from the consumer unit itself, do not reset any breakers - isolate the whole property at the main switch if you feel the situation warrants it. Keep the area around the consumer unit clear and accessible. If you see any sign of fire, leave the property immediately and call 999 before calling an electrician.

Is it worth getting an Electrical Installation Condition Report on an older Catford property?

For any property built before 1990 that has not had a recent inspection, an EICR is worth every penny. Older installations in Catford terraces and semi-detached houses commonly show deteriorating insulation, undersized cables for modern loads, missing earthing, or consumer units without RCD protection. An EICR will categorise any issues as immediate danger, potentially dangerous, or improvement recommended - giving you a prioritised repair list rather than a vague concern. The typical cost is between 150 and 300 pounds for a three-bedroom house.

Can I replace a fuse in my consumer unit myself to restore power in an emergency?

Replacing a blown cartridge fuse in an older-style consumer unit is technically within the capabilities of a competent DIYer, but you should only do it once to restore power while you arrange a proper inspection - not repeatedly to override a fault that keeps blowing the fuse. Rewiring a fuse holder with new fuse wire is work that should only be done by a qualified electrician, and any fault that causes repeated fuse blowing or breaker tripping needs professional diagnosis before you restore power to that circuit. Resetting a fault without identifying its cause is how electrical fires start.