On which side of a circuit is the pin section of an AN/MS connector normally installed?

In aircraft electrical systems, the pin section of an AN/MS connector is typically installed on the ground side of the circuit. This design choice is based on the principle of maintaining safety and minimizing the risk of electrical shock or short circuits. Having the pins connected to ground allows for a safer handling of wiring and connectors, as the ground is generally at a lower potential compared to the power supply side, which can carry a higher voltage.

Additionally, connecting the pins to the ground side helps to ensure that any leakage currents can be safely directed to the ground, preventing potential hazards. This arrangement also aligns with standard practices in aircraft wiring, where grounding is critical for system integrity and safety.

The other options do not align with established practices in electrical systems. For instance, placing the pin section on the power supply side could expose technicians to higher voltages and increase the risk of electric shock. The neutral side, while it may seem like a viable option, is not specifically defined in the context of aircraft systems in the same way as power and ground, leading to ambiguity. Therefore, the standard convention is to have the pin section on the ground side for both safety and operational reliability.