What must be provided in every workspace above service equipment?

Illumination is essential in every workspace above service equipment because it ensures that technicians and electricians can work safely and effectively. Proper lighting helps to reduce the risk of accidents and injuries by allowing workers to clearly see electrical connections, tools, and equipment. Good visibility is particularly important when handling potentially hazardous equipment, as it aids in identifying any issues with wiring or connections and ensures that safety protocols are followed.

In contrast, while ventilation, fire extinguishers, and work benches have their own specific purposes and benefits in a workspace, they are not universal requirements for all situations regarding spaces above service equipment. Ventilation may be necessary in certain environments to reduce exposure to fumes, fire extinguishers are important for fire safety but are situational, and work benches are useful for organization and functionality but are not a must-have in every service equipment workspace.