Why is maintenance of electrical equipment important for electrical safety?

Maintenance of electrical equipment is crucial for electrical safety because it helps to maintain safe work conditions when equipment is energized. Regular maintenance practices ensure that faults, wear, and deterioration are identified and addressed before they lead to hazardous situations. For example, through routine inspections and servicing, potential issues such as insulation breakdown, loose connections, or dust accumulation can be detected and rectified. This proactive approach mitigates the risk of electrical shocks, short circuits, or even fire hazards, creating a safer work environment when the equipment is energized.

While preventing overheating is important and plays a role in equipment safety (as indicated in the first option), it's not the only consideration in electrical safety. Simply ensuring effective operation under all conditions, as suggested by the second option, does not directly address the immediate risks associated with energized equipment. Similarly, promoting equipment longevity contributes to overall efficiency and cost-effectiveness, but it does not inherently ensure safety during operation. The emphasis on maintaining safe work conditions while equipment is energized is paramount for protecting workers and ensuring compliance with safety standards.