What must be provided in all working spaces above service equipment?

In all working spaces above service equipment, illumination is a critical requirement. Proper lighting ensures that technicians can safely perform maintenance and troubleshooting tasks in these areas. Without adequate lighting, the risk of errors increases, and safety hazards, such as slips or falls, become more prevalent. This requirement is intended to promote a safe working environment, allowing workers to see clearly and handle equipment more effectively.

While heating, ventilation, and access panels might be relevant in certain contexts, they do not specifically address the immediate need for visibility and safety during work activities. Therefore, illumination stands out as the essential element that must be consistently provided in these spaces.