Electrical issues can be common in commercial buildings. Especially older properties that weren’t built for the demand you’d expect to see in a more modern development.

But when something goes wrong, it disrupts the daily function of the building. Lights go off in offices, equipment powers down in factories, and you get phone calls from disgruntled occupants that are facing downtime.

A lot of common electrical issues don’t just happen overnight. They build up silently over time through heavy usage or a lack of regular maintenance.

The good news is that most commercial electrical issues can be found and fixed early, with preventable steps to stop future reoccurrence.

What Causes Electrical Faults in Commercial Properties?

Electrical systems are constantly under pressure. Powering more equipment, running for longer hours, and supporting a wider range of systems compared to domestic homes. Over time, this means faults are more likely to develop. The most common causes are:

  • Increased usage or overloading – as businesses grow, extra equipment is often added without reviewing the electrical system, straining it beyond its normal capabilities.
  • Older infrastructure – over time wiring, distribution boards, and components may not be able to keep up with modern power demands.
  • Lack of maintenance – without regular inspections, small problems go unnoticed until they become noticeable big problems, costing you more time and money. Preventative maintenance is essential in minimising electrical faults in commercial buildings.

Common Electrical Problems in Commercial Buildings and How You Can Prevent Them

Despite electrical issues being common in commercial buildings, in most cases they’re easily avoidable. If you find yourself encountering any of the faults below, keep in mind the steps you can take to prevent them happening again in the future.

Commercial electrical issues can also lead to health and safety risks, operational disruption, and non-compliance with UK building regulations. Acting early and quickly when your building has a fault is the best way to avoid these repercussions.

Overloaded circuits

Connecting too many devices or systems to one circuit can lead to overloading. If your circuits are overloaded, power may trip or get interrupted, or sockets and equipment will start getting hot.

Overheating equipment is a fire hazard, so it’s important to address overloaded circuits as soon as you can.

How to avoid it:
Contact an electrician to complete a load assessment. This will help you determine if your system is powering more than it’s designed to handle. You may need to upgrade your circuits or redistribute power to prevent ongoing problems with overloading.

Faulty wiring

If your wiring has been installed incorrectly or is damaged, it will quickly become a problem. When connections aren’t made, the circuit can’t work. As a result, you may experience flickering lights, intermittent power issues, or burning smells.

How to avoid it:
Regular inspections by qualified electricians help you spot damaged or wrongly fitted wiring. It’s best to replace and upgrade your wiring when needed to keep your building operating safely.

Tripping circuit breakers

Circuit breakers cut the power if there is fault. In the moment, resetting the breaker can get the power back on, which is fine if tripping only happens occasionally. But frequent tripping can be a sign of a deeper fault.

How to avoid it:
Ask an electrician to investigate the root cause. Whether it’s overloaded circuits, damaged equipment, or a wiring issue, they’ll be able to fix it properly and prevent future problems.

Problems with lighting

Lighting issues are a serious fault for commercial buildings. From health and safety concerns to reduced productivity or even a full shutdown, a fault with the lights should be top of your priority list.

Fixtures may become damaged or outdated, with defective wiring, poor installation, or a faulty bulb.

Look out flickering lights, areas of darkness, and frequent bulb failures. Don’t wait for a complete blackout.

How to avoid it:
Routine maintenance and, if applicable, upgrade to modern, more energy-efficient lighting systems. Not only will this reduce failures, but it can also improve performance across your building.

Power surges

Power surges are sudden spikes in voltage when electricity massively exceeds the typical flow. Some causes of a power surge are out of your control, like a lightning strike or an electrical outage in the area.

But there are other potential risks, including faulty wiring and electrical overloads from using high-power devices.

How to avoid it:
Installing a surge detection device can help safeguard your systems from increased voltage. An electrician will be able to assess where protection is needed in your building and implement the best solution to reduce risks.

The Importance of Regular Electrical Maintenance

When it comes to electrical systems in commercial buildings, prevention is better than cure. Don’t wait until a problem is costing you valuable time and money.

Routine inspections and maintenance will keep your building running safely and reliably. No downtime or operational disruption.

It’s also important for compliance. Commercial properties are required to meet electrical safety standards. Regular inspections like the Electrical Installation Condition Report (EICR) will ensure you meet those standards.

Avoid Electrical Issues in Your Commercial Building with Fusion Electrical

You may not be able to control when an electrical fault occurs. But you can reduce the risks of issues through routine inspections and maintenance.

Our electrical contractors are NICEIC-approved specialists in inspections and testing within commercial buildings. We have decades of experience under our belt, providing a comprehensive service that ensures your electricals are safe and compliant.

To check the condition of the electrical systems in your commercial building, get in touch with us today.