Which type of hydraulic fluids are required around energized lines in aerial lifts?

The requirement for using insulating hydraulic fluids around energized lines in aerial lifts is crucial for ensuring safety in environments where electrical hazards are present. Insulating hydraulic fluids have properties that help prevent electrical conduction, which is vital when working near energized equipment. This type of fluid helps to protect the operator and equipment from potential electrical shocks or short circuits, thereby enhancing the overall safety of aerial lift operations.

In contrast, while fire-resistant hydraulic fluids might be beneficial in some applications, their primary function is to reduce flammability rather than provide insulation against electrical current. Non-conductive hydraulic fluids could also be relevant, but the term "insulating" typically emphasizes their capability to prevent electrical flow effectively. Standard hydraulic fluids do not provide the necessary protection required in environments with energized lines, which could pose a serious risk.