What kind of assessment is critical before working on electrical systems?

A hazard assessment is essential before working on electrical systems because it identifies potential risks and dangers associated with electrical work. This includes recognizing sources of electrical shocks, arc flashes, and other electrical hazards that can occur during installation, maintenance, or repair activities. Conducting a hazard assessment ensures that appropriate safety measures and protocols are in place to protect workers and prevent accidents.

While cost assessments, environmental impact assessments, and market analyses are valuable in their own contexts—related to financial considerations, ecological consequences, and industry demand, respectively—they do not specifically address the safety and health risks inherent in electrical work. The primary focus of a hazard assessment is to create a safe working environment and mitigate risks associated with electrical systems, making it the critical assessment required in this scenario.