Which grounding technique is primarily used for safety in electrical systems?

The choice of system ground is primarily employed for safety in electrical systems as it provides a reference point for the electrical system's voltage and helps ensure that electrical faults are safely managed. A system ground connects the neutral point of a power supply directly to the ground, which is essential for maintaining a stable reference voltage. This grounding technique minimizes the risk of electric shock to personnel and protects equipment by facilitating the operation of protective devices, such as fuses and circuit breakers.

By grounding the system, any fault that occurs—such as a short circuit—can safely redirect fault current into the ground. This enables circuit protection devices to operate correctly, isolating the fault and preventing any hazardous conditions. Proper system grounding also limits transient overvoltages and enhances the overall reliability of electrical systems.

Thus, a system ground is integral to ensuring safety in electrical installations, allowing for effective protection against electrical faults.