Why Does My Circuit Breaker Keep Tripping? Causes, Risks, and When to Call an Electrician

Lisa — Fri, 05 Jun 2026 09:52:53 +0000

Lisa Fri, 06/05/2026 - 10:52

A circuit breaker that trips once and stays reset is rarely cause for concern; it has done exactly what it was designed to do. A breaker that trips repeatedly, or one that
trips immediately every time you reset it, is a different matter.

It is worth understanding what each common cause looks like, because some are straightforward to resolve, and others need a qualified electrician involved fairly
quickly.

What a circuit breaker is doing when it trips

A miniature circuit breaker (MCB) protects the wiring on its circuit from carrying more current than the cable is rated for. When the current exceeds the breaker's rated capacity, it trips and cuts the supply to that circuit. This is the protection working correctly; the problem that needs diagnosing is whatever caused the excessive current in the first place.

Overloaded circuit

This is the most common cause of a tripping breaker. If a circuit is being asked to supply more power than it was designed for — often because too many high-draw appliances are connected to a limited number of sockets — the breaker will trip when the cumulative demand exceeds its threshold. The immediate fix is to spread the
load by moving some appliances to a different circuit. If this is a recurring pattern, adding a new circuit is the proper long-term solution.

A faulty appliance

If the trip happens consistently when a specific appliance is in use, that appliance is a strong suspect. Unplug it and test the circuit with something else. If the breaker
stops tripping, the appliance has a fault, either an internal short circuit or failing insulation, and needs repairing or replacing rather than continuing to use.

A short circuit in the wiring

A short circuit occurs when a live conductor comes into direct contact with a neutral conductor, usually as a result of damaged insulation, a deteriorated connection, or a
failure inside a socket or fitting. Short circuits produce a large and sudden current surge, which trips the breaker immediately and forcefully. They tend to be more
serious than overloads and require an electrician to trace and repair the fault.

A ground fault

A ground fault occurs when a live conductor makes contact with an earthed surface: the metal chassis of an appliance, a damp wall, a conductive floor in a kitchen or
bathroom. Where RCD protection is in place, the RCD will typically respond to this type of fault before the MCB. Ground faults in wet areas are particularly dangerous
and should be investigated as a priority.

A worn or faulty breaker

Circuit breakers are mechanical devices, and they have a finite service life. A breaker that trips at low load, trips without an obvious cause, or repeatedly trips despite there being no identifiable fault on the circuit may itself be the problem.

Replacing a single MCB is a straightforward job that can make a significant difference.

When to stop resetting and call an electrician

The same breaker trips more than once or twice without a clear cause
You notice a burning smell or scorch marks near the consumer unit or any socket on the affected circuit
The breaker trips the moment it is reset, before anything is switched on
You are not confident identifying which of the above scenarios applies

I cover Bedfordshire and can usually turn fault-finding work around quickly. Call me on 07881 627 423 or send a message, and I will get back to you.

Fault finding

Consumer unit upgrades

Fault finding

fuse board upgrades

Fuse Box upgrades

Kings Reach, Biggleswade

What Electrical Work Can You Legally Do Yourself and What Needs a Qualified Electrician?

gazza — Fri, 15 May 2026 11:59:28 +0000

What Electrical Work Can You Legally Do Yourself and What Needs a Qualified Electrician?

gazza Fri, 05/15/2026 - 12:59

Some electrical jobs are fine to do yourself. Others are legally restricted to qualified electricians. Here is how to tell the difference before you start.

There is a common assumption that all electrical work in a home requires a qualified electrician. There is an equally common counter-assumption that you can do
whatever you like if you know what you are doing. Neither is accurate. The legal position in England and Wales is more nuanced than either, and understanding it
properly can save you both money and significant problems down the line.

What you can legally do yourself

Certain minor maintenance tasks are not covered by Part P of the Building Regulations and can be carried out by a competent homeowner without notification
or certification. These include:

Replacing a like-for-like socket, switch, or ceiling rose
Changing a fuse in a plug or at the consumer unit
Fitting a new light fitting in place of an existing one
Replacing the flex on a lamp or other portable appliance
Installing battery-operated devices such as smoke alarms or doorbell systems

The key qualifier in all of these is 'like for like'. Replacing an existing single socket with a single socket of the same type is minor maintenance. Adding extra sockets to a circuit, or doing any work in a kitchen or bathroom, is a different matter entirely.

What must be done by a registered electrician

Part P of the Building Regulations governs most significant electrical work in domestic properties. Work in this category must either be carried out by an
electrician registered with a government-approved competent persons scheme — such as NICEIC, NAPIT, or ELECSA — who can self-certify the work, or be separately notified to your local authority building control department. Notifiable work includes:

Adding any new circuit in the property
Any electrical work in a kitchen, bathroom, or other special location
Replacing or upgrading the consumer unit
Installing outdoor sockets, garden lighting, or external circuits
Wiring for an EV charger, hot tub, pool, or outbuilding

The Building Regulations guidance on gov.uk covers Part P in detail if you want the authoritative version.

Why this matters when you come to sell

Electrical work that should have been notified and certified but was not becomes a legal problem at the point of sale. Solicitors routinely ask for Building Regulations completion certificates or Electrical Installation Certificates for any work carried out in the property. If you cannot produce one, you may need to commission an inspection to verify the work retrospectively, or in some cases, have the work redone entirely.

The cost of getting it right the first time is almost always less than dealing with it later.

A grey area: permitted development and minor alterations

Some jobs feel borderline, adding a socket to an existing ring circuit in a living room, for example, or extending a lighting circuit in a loft conversion. These are technically notifiable under Part P, but because they are being done by a registered electrician the self-certification process handles the compliance side without any further steps
from you. The key is using someone who is actually registered and will issue the correct documentation on completion.

If you are not sure, just ask

I am always happy to give a straight answer before any work starts. Drop me a message or call 07881 627 423 and I can tell you in plain English what the job
requires.

Additional Circuits

Bathroom Electrics

Doorbell and Smart Doorbell Installation

Lighting Installation

Like For Like Electrical Replacement