What is the minimum surface area required for plate electrodes made of iron or steel?

The minimum surface area required for plate electrodes made of iron or steel is indeed 2 square feet. This requirement is outlined to ensure adequate conductivity and grounding performance. The size of the electrode affects its ability to dissipate electrical energy safely into the ground, which is crucial for protecting electrical installations and ensuring safety.

A plate electrode with a surface area of 2 square feet strikes a balance between practicality and effectiveness. A smaller surface area might not provide enough conductive surface for proper grounding, while a larger area could be unnecessary and cost-inefficient. It is essential for electrical contractors to adhere to these standards to minimize the risks of electrical faults and improve the overall safety of the electrical system.