What is the estimated amount of non-metallic sheathed cable required for circuit 7 (RP-BA)?

The estimated amount of non-metallic sheathed cable needed for circuit 7 (RP-BA) is calculated based on the specific requirements of that circuit, which may include factors such as the distance the cable needs to cover, any bends or obstacles, and necessary allowances for installation.

The correct answer indicates a precise measurement of 77 feet and 7 5/8 inches, which likely reflects a careful consideration of the installation environment and the layout of the circuit. This measurement includes not only the actual run of the cable but also any additional lengths needed for termination at both ends, taking into account standard practices for wiring installations.

In the context of the other options, they either indicate longer or shorter lengths that may not meet the requirements of the circuit, suggesting that they do not match the assessment of the specific installation scenario as precisely as the correct answer does. The importance of accuracy in estimating cable length cannot be understated, as using too much or too little can lead to project inefficiencies or code compliance issues.