What was wrong with early construction practices?

Early construction practices in electrical substations often faced significant flaws leading to serious safety concerns. One of the main issues was related to the number of wires installed in close proximity, which created a hazardous environment. These wires could block sunlight, reducing visibility and making it difficult for workers to navigate safely around the equipment. Furthermore, the presence of so many wires heightened the risk of accidental contact, increasing the chances of electrocution. This highlights the importance of careful design and layout in construction to ensure both efficiency and worker safety.

While the other choices touch on valid concerns such as costs, material durability, and safety regulation compliance, the specific risk of electrocution from blocked sunlight and wire density directly reflects the practices that could lead to immediate and dangerous situations for workers, underscoring the critical need for safety in electrical installations.