Common Safety Mistakes Around Overhead Power Lines

Working near overhead power lines is one of the highest-risk activities in the electrical supply industry. Despite strict guidelines and mandatory training, preventable incidents still occur — often because of simple safety mistakes. Whether you’re an electrician, crane operator or non-electrical worker, understanding these common errors is essential to keeping yourself and your team safe.

In this article, we’ll take a look at the most frequent safety mistakes people make when working near overhead power lines and how to avoid them.

Failing to maintain safe approach distances

One of the most common and dangerous mistakes is failing to maintain the required minimum safe distance from live overhead power lines. In NSW, these distances are clearly defined depending on the voltage of the lines and the type of work being performed. Ignoring these rules can lead to contact with live conductors, which may result in serious injury or fatality. Proper training ensures workers understand the safe distance requirements and know how to apply them on-site.

Lack of hazard identification and site assessment

Another key mistake is starting work without thoroughly assessing the worksite for electrical hazards. Workers sometimes overlook the presence of power lines or assume they’re de-energised without confirmation. This is why it’s crucial to carry out a detailed site risk assessment before starting any job near live electrical assets. Identifying hazards early allows workers to plan their tasks safely and implement appropriate control measures.

Incorrect use of plant and equipment

Crane operators and plant workers sometimes underestimate how easily machinery can breach safe approach distances. Booms, cranes, tipper trucks and even scaffolding can accidentally enter exclusion zones if operators are not vigilant. This is often due to poor planning, lack of spotters, or inadequate training. It’s vital that all plant operators receive proper training — such as our crane and plant course — to understand how to work safely around live electrical infrastructure.

Poor communication on worksites

A lack of clear communication between workers is a leading factor in overhead power line incidents. Everyone on site must understand the risks involved and be aware of the location of live assets. When teams don’t communicate effectively, the chances of someone unintentionally entering a danger zone increase. Toolbox talks, site inductions and clear signage all help reduce this risk.

Assuming power lines are insulated or de-energised

Many workers mistakenly believe that overhead power lines are insulated, or that lines will automatically be de-energised during their work. This is a dangerous assumption. Most overhead lines are not insulated, and they must always be treated as live unless confirmed otherwise by the network operator. Workers must never rely on appearance or assumption — only on confirmed information and proper isolation procedures.

Lack of refresher training

Finally, a common mistake is assuming that once you’ve completed your training, you’re set for life. In reality, the rules, risks and best practices in the electrical supply industry change regularly. Refresher training is mandatory for many workers, including ASP Level 2 electricians, and it’s vital for maintaining a safe workplace.

Want to learn more about overhead power line safety?

At IAC Safety Services, we specialise in electrical safety training tailored to the ESI. Our overhead power lines and crane and plant courses are designed to keep workers informed, compliant and safe. Contact us today to book your next course.