What is the function of a power surge?

A power surge refers to a temporary increase in voltage that occurs in an electrical circuit. This increase can be brief but significant, often exceeding the normal voltage levels. Surges can happen due to various reasons such as lightning strikes, power outages, or the sudden activation of large electrical devices. Understanding this concept is crucial for recognizing the potential impact a surge can have, including damaging electrical equipment and causing malfunctions.

The term "surge" inherently implies a sense of rapid change, which is why the temporary nature of this increase is a key aspect. Recognizing that a power surge represents a spike in voltage, rather than a decrease or stable condition, helps differentiate it from other electrical phenomena that might occur in a circuit. This understanding is essential for anyone in the electrical field, as it highlights the importance of surge protection devices that can safeguard equipment from these spikes.