Why Your Fuse Box Keeps Tripping and What to Do About It in Barnstaple

Published October 2026 | Why your fuse box keeps tripping and how to fix it

If you've come home to half the lights out, or stood in the dark wondering what just happened to your kitchen, it can feel alarming - especially when it's the first time you've had to deal with anything like this. You're not alone in that feeling, and in most cases it isn't as serious as it seems in that first moment of panic. This guide will walk you through what's actually happening inside your fuse box, what you can look at yourself right now, and how to find a reliable electrician in Barnstaple when you need one.

What Is Actually Happening - the Basics Explained Simply

Your fuse box - more accurately called a consumer unit - is the control centre for every electrical circuit in your home. Inside it, you'll find a row of switches called circuit breakers, and in modern installations, devices called RCDs (residual current devices). Each one protects a specific circuit: the upstairs lights, the downstairs sockets, the cooker, the shower, and so on.

When a circuit breaker trips, it's doing exactly what it was designed to do. Something on that circuit has either drawn too much power, developed a fault, or caused electrical current to flow along a path it shouldn't. The breaker detects this and cuts power automatically to protect your home and everyone in it. It's a safety mechanism working correctly - not a sign that something is catastrophically broken.

There are three main causes behind most tripping:

1. Overloading. Too many appliances drawing power from a single circuit at once. Plug in a fan heater, a kettle, and a toaster on the same ring circuit and you can easily push it past its rated capacity, causing the breaker to trip.
2. A short circuit. A live wire comes into contact with a neutral wire somewhere on the circuit - usually inside a faulty appliance or a damaged socket - causing a sudden surge of current that trips the breaker almost instantly.
3. An earth fault. Current leaks to earth through a route it shouldn't, often because of a failing appliance, damaged wiring, or moisture in a socket or fitting. Frequent tripping of circuit breakers may indicate overloaded circuits, and burning smells from sockets or switches are a warning sign of overheating.

The difference between a one-off trip and repeated tripping is important. A breaker that trips once and stays reset after you've unplugged a couple of appliances is usually a load issue. A breaker that trips the moment you try to reset it, or one that trips every few days with no obvious cause, is telling you there's a fault that needs a qualified set of eyes on it.

Is This an Emergency or Can It Wait?

This is the first question most people have, and the answer really does depend on what you can see and smell.

Call an emergency electrician right away if:

• You can smell burning coming from any socket, switch, or from the fuse box itself
• You can see scorch marks or discolouration around a socket, plug, or on the consumer unit casing
• There are any signs of sparking, even minor ones
• Your entire home has lost power and you've confirmed there's no street-level outage affecting your area
• The main switch on your consumer unit keeps tripping and won't stay on

A burning smell is never something to leave until tomorrow. Electrical engineers in Barnstaple can identify faults urgently and have the skills to fix the problem to keep you safe - it's worth having an emergency number to hand before you ever need it.

You can usually wait for a routine appointment if:

• One specific circuit has tripped and you can identify the appliance that caused it
• Resetting the breaker works and the power stays on
• The tripping only happens when you run too many things at the same time
• There are no smells, sparks, or any visible signs of damage

If you're unsure which category you're in, treat it as urgent. Electricity doesn't offer many second chances, and an out-of-hours call-out costs a lot less than the alternative.

What You Can Safely Check Yourself (With Zero Experience)

You don't need any electrical training to carry out these checks. All you need is a bit of care and methodical thinking.

Step 1: Find your fuse box. It's usually in a hallway, under the stairs, in a kitchen cupboard, or in a utility room. Open the cover and look at the row of switches inside. They should all be pointing in the same direction when everything is working normally.

Step 2: Identify the tripped breaker. A tripped breaker will typically be sitting in a middle position between on and off, or it may have flipped fully to the off position. Some units have a small coloured indicator window that shows red or orange when a fault has been detected.

Step 3: Unplug everything from that circuit before you touch anything. Go around every room on that circuit and unplug all appliances. If it's a lighting circuit that's tripped, turn off every light switch in the affected area.

Step 4: Reset the breaker. Switch it fully off first, then back on. If it holds, start plugging appliances back in one by one, waiting a minute or so between each one. If it trips again when you reconnect a specific appliance, that appliance is almost certainly faulty and should be taken out of use.

Step 5: If it trips immediately on reset with nothing plugged in, stop there. Do not keep resetting it. This points to a wiring fault on the circuit itself rather than a faulty appliance, and that needs a qualified electrician to trace and fix it properly.

A few things you should never do: tape a breaker in the on position to stop it tripping, keep resetting a breaker that won't hold, or try to open up sockets or the consumer unit itself. These actions bypass the protection that's keeping your home safe and can turn a minor fault into a serious hazard.

How to Find a Trustworthy Electrician in Barnstaple

Barnstaple and the wider North Devon area has a solid number of local electricians to choose from, but quality and pricing vary more than you might expect. Here's how to filter for someone you can actually trust.

Check for NICEIC or NAPIT registration. These are the two main competent person schemes for electricians in England and Wales. A registered electrician has been assessed against current wiring regulations and is authorised to self-certify their work. You can verify any electrician's registration on the NICEIC or NAPIT websites - it takes about 30 seconds and is well worth doing before you book.

Ask about certification for significant work. Any substantial electrical work on your property should come with an electrical installation certificate on completion. An electrician who's registered and working correctly will provide this as a matter of course. Keep any certificates you receive - you'll need them if you ever sell the property.

Get at least two quotes for anything beyond a minor repair. Prices across Devon can vary quite a bit between firms, and a second opinion often gives you a much clearer sense of what's fair for the job.

Read recent local reviews. Look specifically for comments about whether the electrician was upfront about what the job involved, whether the final price matched the quote, and whether they explained things clearly. Reviews from other Barnstaple homeowners are particularly useful because they tell you the electrician knows the area and isn't subcontracting to someone unfamiliar with local properties.

The Voltrade GoFIX diagnostic tool can help you describe your problem accurately before you make contact with anyone, which means you get to a useful conversation faster and are more likely to receive an accurate quote from the outset.

Be cautious of anyone who:

• Won't give you a written quote before starting work
• Asks for a large cash payment upfront
• Can't produce a registration certificate when you ask
• Tells you the problem is far more serious than it sounds without being able to show you why

What a Repair Visit Looks Like (So You Know What to Expect)

If you've never had an electrician round for a fault investigation, not knowing what to expect can feel as stressful as the fault itself. Here's what our engineers typically do during a visit for a tripping consumer unit.

The diagnostic phase comes first. The engineer will ask when the tripping started, whether it's linked to a particular appliance or time of day, and whether anything changed recently - new appliances, recent building work, or any changes to the rooms affected. This sounds like small talk but it tells a good electrician quite a lot about where to look. They'll then carry out a series of tests on the affected circuit, checking things like insulation resistance, earth continuity, and the condition of the breaker itself.

Tracing the fault can take anywhere from 15 minutes to a couple of hours depending on how complex the problem is. A faulty appliance is usually identified quickly once the testing gets underway. Wiring faults - particularly in older properties in and around Barnstaple where the wiring may not have been touched in decades - can take longer to trace because the problem might be anywhere along a cable run.

The repair itself should only begin after the engineer has explained what they've found and what they're going to do about it, including the cost. Common repairs include replacing a faulty breaker, replacing a damaged socket, or isolating and replacing a section of cable. If the investigation reveals an overloaded or dated consumer unit, upgrading to a modern consumer unit is sometimes the right recommendation rather than repeatedly patching around the underlying issue.

After the work is complete, the engineer should walk you through what was done and why. For any work that requires certification, you should receive this before the engineer leaves. Don't accept a promise that it'll be posted to you - it should be on hand at the end of the job.

Typical Costs - So You Are Not Caught Off Guard

Electrical pricing in Barnstaple broadly tracks national averages for a rural market town, with some variation based on the firm, the complexity of the job, and the time of day you need someone.

Call-out and fault-finding: typically between 60 and 120 pounds for the first hour of labour, with a separate call-out fee that commonly adds another 40 to 80 pounds. Emergency call-outs outside of normal working hours can cost between 150 and 300 pounds for the visit alone, before any repair work is factored in.

Replacing a circuit breaker or RCD: commonly between 80 and 200 pounds including parts and labour, depending on the type of device being fitted and how simplely the old one can be removed.

Replacing a socket or damaged section of cable: typically between 60 and 150 pounds per socket or cable run, depending on how much access is needed and the length of cable involved.

Consumer unit replacement: a full upgrade to a modern dual RCD or RCBO consumer unit typically costs between 400 and 750 pounds for a standard domestic property in Devon. Larger homes or those with more complex wiring arrangements will usually sit at the higher end or above.

Electrical Installation Condition Report (EICR): if your engineer recommends a full inspection of your property's wiring - common in older Barnstaple homes that haven't been inspected in some time - this typically costs between 150 and 300 pounds depending on the size of the property and the number of circuits being tested.

Always get a written quote before any work begins. A reputable electrician will not start the job without one, and you should not agree to proceed without it.

Questions You Should Ask Your Engineer

Asking the right questions helps you understand what you're paying for and gives you a clear picture of whether the work has been done to a proper standard. Here's what's worth raising before and during the visit.

1. "Are you NICEIC or NAPIT registered?" - and then verify it online before they start. A legitimate, competent electrician will have no problem with this at all.
2. "What's causing this specifically?" - ask for a plain-English explanation, not just a quote for a fix. If an electrician can't tell you in clear terms what the fault is and why it's happening, that's a concern.
3. "Will this work come with a certificate?" - so you know what documentation to expect and can chase it if it doesn't arrive.
4. "Did you notice anything else while you were working on it?" - a good electrician will flag anything they spot that could cause problems further down the line, without necessarily pushing you to fix everything on the spot.
5. "What does your workmanship guarantee cover?" - most reputable electricians in the Barnstaple area offer at least a 12-month guarantee on their labour.
6. "Can I have an itemised invoice?" - this is a standard ask for any trade job and should never be refused.

First-Timer Questions

Why does my fuse box only trip at certain times of day?

Timing is usually a strong clue. If the circuit trips during the morning rush or in the evening when multiple appliances are running simultaneously, you're most likely overloading the circuit rather than dealing with a wiring fault. It can also happen when an appliance is developing a fault - working most of the time but failing when it reaches a certain operating temperature or load. Make a note of exactly when the tripping happens and what was running at the time, because this information helps our engineers locate the source of the problem much faster when they arrive.

Is it safe to reset the breaker myself?

Yes, resetting a tripped breaker is something you can do safely yourself, provided you unplug everything on that circuit first. Switch the breaker fully off, then back on. If it holds, plug appliances back in one at a time with a short gap between each, and watch for which one causes the trip. If the breaker trips the moment you switch it on with nothing plugged in at all, stop and leave it in the off position. That pattern points to a wiring fault rather than an appliance problem, and repeated resetting won't fix it - it'll just mask it.

Could the problem be with my electricity supplier rather than my wiring?

It's possible in some situations but less likely than a fault in your own wiring. If your entire property loses power at the same time and your neighbours are affected too, a network issue is the probable cause - your supplier will have an outage map or a fault line you can check. However, if only specific circuits are tripping, or if the main switch on your consumer unit is the one that keeps cutting out, the problem is internal to your property. That's a matter for an electrician in Barnstaple, not a call to your energy supplier.

How old does a fuse box have to be before it should be replaced?

There's no fixed rule, but consumer units that are more than 25 to 30 years old are often worth assessing regardless of whether they're causing problems. Older units frequently lack modern RCD protection, which is now considered a baseline safety standard for domestic properties. Many older homes across Devon - particularly those that haven't had electrical work done since the 1990s or earlier - are still running on units that were adequate at the time but don't meet current expectations. A qualified electrician can assess your unit and give you an objective view of whether it needs updating.

Will I need to be at home for the whole visit?

Yes, in almost all cases you'll need to be present from start to finish. The electrician will need to move between rooms, may need to ask questions as the fault-finding progresses, and should walk you through their findings before they leave. If you're a landlord arranging work on a rental property in the Barnstaple area, you'll need to make sure either you or the tenant is available and able to give access to all relevant parts of the property for the duration of the appointment - partial access can significantly slow down the diagnostic process.