Working clearance is measured from which part of a battery rack?

Working clearance is specifically measured from the edge of a battery rack. This measurement is crucial because it ensures that there is enough space available for safe and efficient operation around the batteries, allowing for proper handling, maintenance, and ventilation. The edge serves as a practical reference point since the design and configuration of battery racks can vary, making it essential to measure from a consistent point when assessing clearance.

When considering this in the context of battery maintenance and installation, evaluating working clearance from the edge helps to prevent accidents and ensures compliance with safety standards. Adequate clearance facilitates easy access to the battery terminals, reduces the risk of contact with adjacent equipment, and allows for the necessary air circulation that can help in cooling the batteries.