How many high voltage jumper cables run between married pairs in M-3 cars?

The correct answer indicates that there are two high voltage jumper cables that run between married pairs in M-3 cars. This setup is essential for the operation of the multiple unit (MU) trains, as these jumper cables are responsible for linking the electrical systems of paired cars. By connecting the high voltage systems, they enable the transfer of power necessary for various functions, including propulsion, lighting, and heating.

Having two jumper cables ensures a reliable electrical connection between cars, promoting efficiency and safety in operations. The specific number of cables is critical for maintaining balance in the electrical distribution system, ensuring that each car receives the necessary power without overloading. This design choice also aids in the management of electrical faults, where redundancy within the systems can be crucial. Thus, the two high voltage jumper cables play a vital role in the functionality of M-3 married pair cars, making this answer accurate.