What is the safe working distance for an unqualified worker at 480V?

The safe working distance for an unqualified worker at 480V is indeed 1’1”. This distance is established based on the potential for electrical hazards, and it is important to maintain this clearance to ensure safety from accidental contact with live parts or equipment.

In the context of working around electrical installations, different voltage levels dictate specific clearance requirements. For low voltages, such as 480V, the recommended minimum distance allows for safe operation and reduces the risk of electrical shock, which can be vital for those who may not have formal training in electrical safety.

The other options represent distances that are either too far or too close for the voltage level in question. Ensuring that unqualified personnel adhere to these safety guidelines is crucial in preventing accidents and creating a safer working environment around electrical equipment.