How can sheath currents be eliminated in a wiring system?

To eliminate sheath currents in a wiring system, grounding the supply side and isolating the load side is a highly effective method. When the supply side is properly grounded, any potential current that could travel through the sheath is directed safely to the ground before it can become a problem. This prevents stray currents from affecting the integrity and safety of the electrical installation.

Isolating the load side contributes to this process by ensuring that any load does not unintentionally create a conductive path back to the source through the sheath. By effectively separating the load side from the supply side, it minimizes the risk of leakage and helps maintain the system's safety by reducing potential shock hazards and electromagnetic interference.

Other techniques like double insulating and using shielded cables can help manage electrical safety and reduce interference, but they do not directly address the specific issue of sheath currents in the way that grounding the supply side and isolating the load side do.