How many down conductors are required for a building with a perimeter length of 425 feet?

To determine the number of down conductors required for a building with a specified perimeter, the key consideration is the perimeter length and the regulations or standards that specify the required number of down conductors based on that measurement. According to the industry standards, typically a certain number of down conductors are required for every designated length of perimeter to ensure proper grounding and lightning protection.

For a perimeter length of 425 feet, calculations based on standard guidelines indicate that the number of down conductors necessary to effectively manage electrical safety and ensure adequate protection should be five. This is based on recommendations to maintain an effective grounding system that distributes the electrical charge safely in case of lightning strikes or electrical mishaps.

In this case, selecting five down conductors adheres to established safety requirements and practices within the field, effectively enhancing the safety and reliability of the electrical system for that building.