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We specialise in rectifying electrical faults

Why Does my Fuseboard Keep Tripping?

If you're experiencing a situation where the fuse switch keeps tripping, it's usually an indication of a faulty electrical device or an overloaded circuit.


Fortunately, finding the root of the problem is typically a process of elimination that you can perform on your own. In this guide, we'll walk you through the steps of identifying why your electricity is continuously tripping and how you can fix a tripped fuse.


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Identifying a circuit over load

Electrical circuits have limitations on how much electricity they can handle. Each device or light that you use will add to the circuit's overall load. When the circuit is overloaded with too many devices, it can draw more electricity than it can handle, causing a fuse switch to blow.

If you have been using a lot of appliances in a single room and the fuse switch has tripped, it is likely that you have overloaded the circuit. The solution is straightforward: unplug some of the devices and reset the fuse switch in your fuse box by moving it back to the "on" position.

It is worth noting that extension leads are frequently the source of overloaded circuits. Although they have multiple sockets, it does not mean that all of them should be used simultaneously. Using all of the sockets at once could be the reason why your electricity keeps tripping.

Fluorescent lamps to be phased out in 2023

The acronym RoHS stands for "Restriction of the Use of Hazardous Substances", which specifically targets the use of mercury in lamps. Due to its classification as a hazardous substance, the utilization of mercury in electrical equipment is prohibited


Identifying a faulty electrical appliance

A MCB, or Miniature Circuit Breaker, is an electrical device designed to protect electrical circuits from damage caused by excess current. It works by interrupting the flow of electricity when the current exceeds a certain level, thereby preventing the circuit from overheating or catching fire.

Inside a MCB, there is a small electromechanical switch called a trip mechanism. When the current in the circuit exceeds the rated value of the MCB, the trip mechanism activates and breaks the circuit by opening the switch. This action stops the flow of electricity and prevents any further damage to the circuit.

MCBs have different ratings depending on the amount of current they can handle before tripping. They also have different trip curves that describe how quickly they will trip under different current conditions. The trip curve is important because it determines how well the MCB can protect the circuit from damage caused by short circuits or overloads.


Overall, MCBs are an essential component of modern electrical systems, providing a cost-effective and reliable way to protect against electrical faults and prevent potentially dangerous situations.

When your fuse switches start tripping, a faulty electrical appliance could be the cause. This may be due to wiring issues or the appliance itself being old and worn out.

You can potentially pinpoint the source of the problem by checking your fuse box. If the switches are labeled, you can identify which room or circuit has the fault and try to recall the last device you plugged in.

If the switches are not labeled, you will need to follow a lengthier process of unplugging all devices in your home, resetting the fuse switch to restore power, and gradually plugging each device back in one by one. Once the faulty appliance is plugged in, the fuse switch will trip again, signaling its location. Make sure to turn off and unplug the appliance before resetting the fuse switch.


Identifying and resolving electrical faults promptly is essential to prevent electric shocks or fires. If you are uncertain about the cause of the issue, it is advisable to contact a qualified electrician to inspect your electrical installation and appliances.

Avoid using faulty appliances

It is crucial to exercise caution when dealing with a faulty appliance. Once you have identified a defect, it is essential to avoid using it until it has been inspected and cleared for use. In case the electrical appliance is new and covered under warranty, it is recommended to return it to the store for a refund or replacement.

However, for older devices, it is unlikely that they will be covered under warranty. In such instances, it is prudent to enlist the services of a qualified electrician to conduct a thorough examination of the faulty appliance. They possess the necessary skills, knowledge and tools to inspect the device safely and determine if a repair is feasible.

It is advisable to avoid repairing faulty electrics independently, as it can be hazardous. While most individuals can competently repair a blown fuse in a plug or fuse socket in a fuse box, addressing faulty electrics is a complex issue that requires specialized expertise. Dealing with such matters unprofessionally can result in severe accidents or harm.

How to repair a tripped fuse box

In contemporary times, the majority of residential buildings have been fitted with up-to-date fuse boxes that are equipped with electrical breakers. These breakers are designed to activate automatically and cut off the electrical supply by flipping downwards when the circuit is overloaded. Resetting them is an easy task that involves simply flipping them back up into the 'on' position.

However, if you are a resident of an older property, you may still have a conventional fuse box that contains fuse sockets.


Inside each socket lies a piece of wire that snaps or burns through when the circuit is overloaded, thereby breaking the circuit. Replacing this fuse wire is relatively simple and straightforward, and we provide a step-by-step guide on our website on how to repair a blown fuse.

Napit Approved Engineers

At JS Electrical Services, we understand the importance of ensuring that your property's electrical system is safe and up-to-date. That's why we only use NAPIT accredited electricians to upgrade new fuse boards.

NAPIT is a UK-based organization that works to ensure the safety and quality of electrical installations in homes and commercial properties.


By working with NAPIT accredited electricians, we can assure our clients that their fuse board upgrade will be carried out by a skilled and knowledgeable professional who adheres to the highest standards of safety and quality. Our commitment to using only NAPIT accredited electricians is part of our dedication to providing top-quality electrical services that our clients can trust.

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