Which of the following best defines the term 'stray-current corrosion'?

Stray-current corrosion is best defined as the decomposition of a material caused by an outside electric current. This phenomenon occurs when an electric current that is not intended for metal protection inadvertently passes through a conductor, such as underground pipelines or structures, interacting with the surrounding environment. This unintended current can accelerate the corrosion rate of metallic surfaces, leading to significant deterioration over time.

In contrast to other forms of corrosion, stray-current corrosion is specifically linked to external electrical influences rather than chemical reactions with soil, moisture-related rust formation, or biological activity. Understanding this concept is crucial for professionals in the field of distribution operations, as managing stray currents is essential for maintaining infrastructure integrity and longevity.