Parts of an electrical system that should be connected to earth include which of the following?

In an electrical system, ground conductors are essential for safety and system integrity. They are designed to provide a safe path for electrical current to return to the ground in case of a fault, such as a short circuit or equipment failure. This connection helps prevent electrical shock hazards and protects equipment by dissipating excess voltage that may arise due to lightning strikes or electrical surges.

Grounding also plays a crucial role in protecting sensitive electronic equipment from damage due to surges and transients. By ensuring that there is a proper grounding system in place, the risk of electric shock is minimized, and the overall safety of the electrical system is enhanced.

In contrast, neutral conductors typically carry return current in a balanced system and do not serve the same purpose as ground conductors in terms of safety during faults. Live conductors are those carrying current and pose a risk of shock under normal operating conditions, while voltage regulators are devices used to maintain a steady voltage level in a system but are not directly related to grounding. Therefore, connecting ground conductors to earth is crucial for safety and effective operation in an electrical system.