Modern life pretty much revolves around a host of electrical appliances and systems. This means that, when people do DIY, they inevitably have to deal with electrical appliances at some point. However, attempting to handle electrical tasks at home without proper understanding and training can cause considerable problems, some of which could seriously compromise the safety of your household. So, to prewarn you before you get your tools out, here are some common DIY mistakes that could put your home’s electrical system at risk:

Inappropriate Supply of Power

One of the most common DIY mistakes is using an inadequate or excessive electrical supply. It’s key to make sure that every appliance or outlet in your home is receiving the right amount of electrical flow - if you’re not sure how to do this, consult with local electricians to get a qualified view of the state of your home’s power supply. Remember, overloading an outlet can lead to an electrical fire, so it’s vital to get this right.

Using Wrong Wire Sizes

Choosing the correct wire size is a technical exercise that requires solid knowledge of electrical systems. Different wire gauges correlate with specific amp ratings. Using a wire with an incorrect gauge could potentially overload the circuit, causing the wires to overheat and (again) potentially leading to electrical fires.

Ignoring Earthing Systems

The earthing system, also known as the grounding system, serves as a protective measure against electrical faults. It provides a pathway for electrical energy to follow should there be a break in the insulation of the wiring. Ignoring the earthing system or incorrectly setting it up is a serious mistake that increases the risk of electrical shock, especially in outdoor setups that might get wet.

Bypassing Electrical Inspections

All UK electrical installations and systems must comply with specific safety standards and regulations. This isn’t to make you jump through hoops - it’s for the safety of you and your family. If you avoid getting any new installation properly inspected by competent professionals, you risk compromising your home’s safety.

Neglecting Fuse and Circuit Breaker Specifications

Fuses and circuit breakers play protective roles in your house. They help to prevent overloads by cutting off the electricity whenever too much current flows through the wiring. Replacing a fuse or circuit breaker with one carrying a higher rating may seem like a quick fix to a constantly tripping breaker. Still, it is dangerous as it leaves your wiring exposed to potentially damaging levels of electric current.

Disregarding Junction Boxes

Electrical boxes, also known as junction boxes, are designed to encase and protect the joints where wires are connected. DIY enthusiasts often overlook this small but crucial component, which results in exposed connections. These can be hazardous, leading to sparks, shocks, or fire if disturbed or exposed to flammable materials.


It's always best to steer clear of DIY when it comes to electronics. Matters of wiring and electrical maintenance may seem relatively straightforward and tempting to take on independently, but they can quickly turn catastrophic if you're not trained and experienced. To safeguard your home’s electrical system, hire a professional for the job. Their comprehensive knowledge of electrical systems will prevent mishaps and ensure your home remains safe and protected.