At trolley wire splices, where should trolley hangers be installed?

The correct choice indicates that trolley hangers should be installed within 3 feet of both sides of the splice. This guideline is essential for ensuring that the trolley wire remains properly supported and can accommodate any potential movement or stress that occurs at the splice. Installing the hangers too far away may lead to inadequate support, which can cause sagging or excessive strain on the splice, potentially leading to failures in equipment or safety hazards.

By maintaining the hangers within this range, the structural integrity of the wire is preserved, ensuring the smooth operation of the trolley system. Proper placement helps to minimize the risk of wires becoming loose or damaged, which could disrupt the electrical feed needed for operations. This is a critical aspect of maintaining both safety and efficiency in transportation systems that rely on such wiring configurations.