NEC Commercial Electrical Practice Test

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the NEC Commercial Electrical Test with multiple choice questions each with detailed explanations. Study efficiently to excel in your exam!

Practice this question and more.

How often should sheet metal auxiliary gutters be supported along their length?

Every 3 feet
Every 5 feet
Every 7 feet
Every 10 feet

The correct answer is: Every 5 feet

Sheet metal auxiliary gutters need to be adequately supported to ensure structural integrity and to prevent sagging or damage over time. According to the National Electrical Code (NEC) guidelines, auxiliary gutters should be supported at regular intervals to maintain stability and proper functionality. The correct answer indicates that these gutters should be supported every 5 feet along their length. This interval is established as a standard practice to provide a balance between sufficient support and practical installation considerations. Supporting the gutters every 5 feet helps to distribute the weight evenly and decreases the risk of bowing or displacing due to environmental factors or the weight of the wiring and other components contained within. This practice is essential not only for the longevity of the gutter system but also for ensuring that it complies with safety standards as outlined in the NEC.