When using 26 feet of Type AC cable for a luminaire, how many additional supports are needed between supports #1 and #2?

In this scenario, the determination of the number of additional supports needed for 26 feet of Type AC cable is based on the requirements set out by the National Electrical Code (NEC) or similar regulatory guidelines that dictate how cable should be supported throughout its length.

Typically, Type AC cable must be supported at intervals not exceeding 10 feet. Therefore, for a length of 26 feet, initial support can be placed at the start and end, which accounts for 20 feet of coverage with the first two supports. This creates the need for additional supports in the remaining distance.

To cover the span adequately, after placing supports at the beginning and end, the distance of 6 feet between supports must be evaluated. Given that the maximum distance between supports is 10 feet, the existing two supports (one at each end) may suffice for the first 20 feet, but more support is necessary for the remaining length. In this case, an additional support can be added approximately halfway through the remaining distance, leading to the conclusion that less than 2 additional supports are required to ensure compliance with standard safety practices.

Overall, this analysis reflects an understanding of proper installation practices and safety considerations surrounding electrical installations.