What is meant by "Grounded" in electrical systems?

In electrical systems, "grounded" refers to the connection of equipment or systems to a conductive body that provides a path for electrical current to disperse into the earth, or earth-like conductive material, thereby ensuring safety and stability. This grounding ensures that in the event of a fault, any excess electrical energy can safely flow into the ground, reducing the risk of electric shock or fire.

When a system is grounded effectively, it minimizes the risk of electric shock to individuals who may come into contact with electrical equipment. The grounding path provides a route for fault current, which can activate protective devices (like circuit breakers) to disconnect the supply, thereby protecting both the system and users.

The other choices highlight concepts that do not accurately align with the meaning of being "grounded." For instance, disconnecting a circuit from the power supply does not involve any grounding; it merely involves isolating the circuit. Isolating a system from direct earth contact does not provide a grounding solution, as grounding necessitates some level of contact with the earth or a similar conductive body. Grounding without sufficient precautions can present hazards rather than ensuring safety and reliability, further underscoring the importance of proper grounding practices.