What does it mean if a circuit is 'grounded'?

When a circuit is described as 'grounded,' it means that it has a direct electrical connection to the earth or ground. This connection serves several important safety functions, primarily reducing the risk of electrical shock for individuals using electrical equipment or appliances. By having this grounding connection, any excess or stray electrical current can be safely directed away from the user and toward the ground, which acts as a reference point for electrical systems and enhances overall system stability.

In addition to safety from shock, grounding helps prevent damage to equipment and reduces electromagnetic interference. Overall, the grounding mechanism plays a vital role in protecting both people and devices from potential electrical faults, making it a crucial aspect of electrical system design and implementation.