What is the maximum vertical spacing for support of an 18 gauge conductor in a vertical raceway?

The maximum vertical spacing for the support of an 18 gauge conductor in a vertical raceway is specified to be in accordance with industry standards, which aim to ensure safety and proper functioning of electrical systems. In this case, the correct answer indicates that the support can be spaced a maximum of 100 feet apart.

Support spacing is crucial because it helps to prevent sagging or mechanical stress on the conductor, which could lead to potential damage, overheating, or shorts. For smaller gauge wires like the 18 gauge, maintaining organized and secure installations is particularly important to ensure compliance with the National Electrical Code (NEC) and to facilitate maintenance or troubleshooting in the future.

Choosing a maximum vertical spacing of 100 feet strikes a balance between practical installation needs and safety requirements, thereby providing adequate support while optimizing the use of materials and labor. This regulation helps to prevent issues that could arise from longer spans that might compromise the integrity of the wiring and the safety of the electrical system overall.