When working on or near electrical equipment, including battery chargers, it's crucial to establish a safe working space. Here's what you need to consider:

• General Requirements: Sufficient access and working space must be provided and maintained around all electrical equipment to allow for its safe operation and maintenance 9, 11, 19. This space should be kept clear and not used for storage 9, 11.
• Minimum Dimensions: The working space should be at least 30 inches (762 mm) wide in front of the electrical equipment 9, 11, 19. Ensure the workspace allows for at least a 90-degree opening of equipment doors or hinged panels 11, 19, 20.
• Depth of Working Space: The depth of the working space depends on the voltage and conditions around the live parts. Distances should be measured from the live parts if they are exposed, or from the enclosure front or opening if the live parts are enclosed 9, 11, 19.
• Entrance and Access: At least one entrance to the working space must be provided, with a minimum width of 24 inches (610 mm) and a height of 6 feet 6 inches (1.98 m) 6, 8, 20.
• Guarding Live Parts: Live parts operating at 50 volts or more must be guarded against accidental contact [1].
• Overhead Lines: If work is performed near overhead lines, they must be de-energized and grounded, or other protective measures must be in place [2]. Maintain a minimum clearance from energized high voltage electrical conductors [3].
• Specific Battery Charging Area Requirements: Battery charging installations should be located in designated areas 1, 7. Adequate ventilation should be provided to disperse fumes from gassing batteries [4]. Facilities for flushing and neutralizing spilled electrolyte and for fire protection should be available 1, 7.

Remember to consult relevant safety standards and regulations for detailed requirements and specific situations.