How many additional supports must be installed between support #1 and support #2 for a 26 feet Type AC cable installation?

For a 26-foot installation of Type AC cable, the National Electrical Code (NEC) provides guidelines regarding the spacing of cable supports. According to NEC standards, Type AC cable must be supported and secured at intervals not exceeding 10 feet. Additionally, the cable should also be secured within 12 inches of each outlet box, cabinet, or fitting.

In this scenario, between support #1 and support #2, which are 26 feet apart, cable supports must be installed at necessary intervals to comply with the NEC guidelines. Given that the maximum spacing is 10 feet, the 26-foot span would require several additional supports.

To calculate the required number of supports, divide the total length (26 feet) by the maximum allowable spacing (10 feet). This results in 2.6, which indicates that at least 3 supports are needed to maintain compliance between the existing supports. Since it’s essential to adhere to regulations for safety and proper function, it’s clear that more than 3 additional supports will be needed to adequately secure the cable over that distance, aligning with the requirements.

Thus, identifying that more than 3 additional supports are necessary confirms the appropriateness of the selection.