According to the NEC Article 620-32, what is the maximum interval for supporting vertical wireways?

The maximum interval for supporting vertical wireways, as stated in the National Electrical Code (NEC) Article 620-32, is 15 feet. This requirement is in place to ensure that the vertical wireways maintain structural stability and that the wiring contained within is adequately supported and protected. The 15-foot interval limit allows for manageable support without compromising the integrity and safety of the installation.

Proper support is critical in preventing sagging or movement of wireways, which can lead to potential hazards, such as damage to the wires or connections and increased risk of electrical faults. Therefore, adhering to this support interval is essential for both safety and compliance with established electrical codes.