What is the minimum dimension of working space required for access to live parts operating at 300V?

The minimum dimension of working space required for access to live parts operating at 300V is indeed 4 feet. This measurement is based on established safety codes that aim to provide electricians and workers with adequate space to safely perform their tasks around energized electrical equipment.

In practical terms, having 4 feet of working space allows for maneuverability and helps ensure that there is sufficient distance to avoid accidental contact with live parts. It also permits the safe use of tools and other equipment that may be necessary for maintenance or repair work.

Furthermore, the specifications regarding working space dimensions are a crucial part of electrical safety regulations, ensuring that individuals working on or near electrical systems have the appropriate safeguards in place to reduce risks associated with electrical hazards. Proper adherence to these dimensions helps prevent electrical shock and other safety incidents, thereby promoting operational safety in electrical work environments.