What is the main purpose of grounding equipment?

The main purpose of grounding equipment is to ensure safe operation of electrical systems. Grounding creates a direct physical connection between an electrical system and the ground, which helps to prevent electric shock hazards and provides a pathway for fault currents to safely dissipate into the earth. This is crucial in protecting both equipment and personnel from electrical faults, such as short circuits or equipment malfunctions that could pose serious safety risks.

When equipment is properly grounded, it minimizes the risk of electrical surges causing damage, enhances the stability of the electrical system, and aids in the proper functioning of protective devices like circuit breakers, which can trip in the event of a fault. Grounding is fundamental to electrical safety practices in various environments, from residential installations to industrial applications.

The other options, while relevant to different aspects of electrical systems, do not pertain specifically to the primary function of grounding. Supporting structure relates to physical stability, energy consumption isn't directly affected by grounding, and voltage levels are managed through other means such as transformers and regulators.