Fluorescent lighting poses significant fire risks

Approximately one in three building fires are believed to originate from electrical issues, often caused by faulty or overloaded installations or connections. Lighting is a common factor, yet it’s rarely inspected during routine property maintenance. Without considering fire safety during lighting upgrades, the risk of electrical fires can increase significantly.

According to our statistics, electricity causes roughly one third of company fires, often due to faulty or overloaded electrical devices, poor connections, or inadequate maintenance. Among the most hazardous are fluorescent tube fixtures with magnetic ballasts; these are typically older lamps or tubs, which can heat up to over 200 degrees Celsius when left on for longer time periods. Despite advances in lighting technology, these fixtures are still widely used in many Nordic companies and pose a serious fire threat that can cause extensive damage.

“Our fire experts have cautioned about the risks associated with fluorescent tube lamps for some time,” says Jussi Lehtonen, Leader Risk Managers Finland, Commercial and the Founder of If’s Safety Academy. “These fires are not only dangerous but also entirely preventable with proactive measures.”

Even though the production and importing of fluorescent tubes into the EU officially ended in 2023, many businesses continue to use these types of fixtures during the transition period. Lehtonen points out that some organisations may be delaying upgrades simply to use up existing stock, but this decision significantly increases fire risks.

“Timely replacement of outdated fluorescent luminaries with safer LED technology-based lighting solutions will reduce the risk of an electrical fire”, says Lehtonen.

A small investment can prevent a major risk

Jussi Lehtonen picture — Jussi Lehtonen, the Founder of If’s Safety Academy

For older fluorescent tube fixtures, the risk of overheating grows as the tube nears the end of its lifecycle. At that point, the starter continuously attempts to ignite the flickering tube, which can cause certain components to overheat.

Replacing standard starters with safety starters is a simple yet effective solution. These safety starters automatically switch off the tube before overheating occurs, significantly reducing the risk of an electrical fire.

"While fires caused by lighting fixtures have decreased in recent years, it’s crucial to continue raising awareness to prevent losses and minimise these risks," Lehtonen notes.

He highlights that one key cause of fires could be linked to less frequent maintenance checks, which allow faulty fixtures to go undetected. Simply, relying on outdated fixtures without proper oversight further increases the risk.

Modifications to LED lights can affect product liability

LED lamps are widely regarded as safer options due to their lower power loss and low voltage. However, as their use becomes more widespread, new electrical and fire safety risks have emerged. When installing LED lighting, it’s important to factor in changes to the electrical system’s overall load and power quality. To ensure safety, lighting upgrades should always be carried out by qualified professionals.

DIY modifications to LED lights may transfer liability to the person carrying out the modification. If the original configuration of a traditional fluorescent tube fixture with a magnetic ballast to accommodate LED tubes is altered, responsibility for product safety may shift from the manufacturer to the person making the modification.

Recommendations for improving fire safety

Upgrade traditional starters to safety starters that automatically shut off faulty fixtures.
Remove flickering or glowing fluorescent tubes immediately.
Schedule regular maintenance checks to ensure lighting systems are safe and functional.
Work with professionals to ensure your lighting systems are both safe and compliant.
Replace fluorescent tubes with LED alternatives
Educate staff and subcontractors about potential risks and include lighting safety as part of routine electrical maintenance procedures.

Meet our expert

Jussi Lehtonen, Leader Risk Managers Finland, Commercial and the Founder of If’s Safety Academy.