Using Extension Leads in the Workplace

Whilst the risk of fire is generally well known, there are still over 7,000 workplace fires every year.

Whilst we can appreciate that workplace fires can start for various reasons, faulty electrical equipment is the biggest cause, accounting for almost 25% of workplace fires, followed by waste, combustibles, smoking and human error.

Overloaded sockets

In an office environment, you’re likely to be surrounded by many electrical devices including computers, printers, shredders to the kettle and microwave in the breakout area. Most workplaces depend on electricity, often requiring multiple appliances to be plugged in simultaneously, however, overloading power sockets is a common and often preventable cause of electrical fires.

Using damaged / worn extension leads or plugging too many devices into a single outlet can lead to overheating and increase the likelihood of a fire.

Each extension lead has a maximum current rating (usually 13 amps). Daisy-chaining increases the number of devices drawing power through a single wall socket, which can easily exceed the safe limit. This can cause overheating, melting of wires and electrical fires along with the chance of loose plugs or exposed wires, damaged insulation and tripping hazards.  (If you use extension leads in ways not intended by the manufacturer, e.g. daisy chaining, it can void their safety certifications and warranties. This means that insurance claims may be denied in the event of a fire. It will also mean that you will be in breach of relevant regulations such as the Regulatory Reform (Fire Safety) Order 2005.)

Coiled extension leads

A further fire hazard can be created if you use coiled extension leads, as the electrical current generates heat that cannot dissipate effectively. The coiled cable increases the electrical resistance, which can reduce efficiency and overheating of both the cable and connected devices, which can lead to melting insulation and fire. This is particularly dangerous when high-powered appliances are plugged in. Tightly coiled cables are more prone to kinks and twists, which can damage internal wiring. Wear and tear from repeated coiling/uncoiling can also put strain on them.

If you are routinely using an extension, try to find ways of securing the extended lead to prevent trip hazards and other damage, including:

• Fully unwind extension leads before use
• Use cable reels with thermal cut-outs
• Regularly inspect leads for signs of damage
• Avoid using extension leads as a permanent solution – install additional sockets if needed.

If the electrical equipment used at your office is faulty or dangerous, this can substantially heighten the risk of an electrical fire. It is important to have a qualified electrician to regularly PAT test your equipment to confirm it is still safe to use. It is also important to keep an extra eye out for any signs of loose cables or damaged plugs, and to replace any equipment found to be faulty.

As previously mentioned, the main cause of workplace fires is electrical equipment. It always recommended to adopt a safe approach when using extension leads, e.g. not overloading them and fully uncoiling them before use and regularly check them for damage to avoid a fire taking hold in your workplace.

For more health and safety advice, please contact us!