Describe the term "derating."

Derating refers to the process of reducing the allowable ampacity of a conductor or electrical component. This is done to enhance the safety and reliability of electrical installations under specific conditions. For example, conductors may be derated because of higher ambient temperatures, multiple conductors bundled together, or installation in enclosed spaces where heat can accumulate. By reducing the ampacity, you decrease the risk of overheating, which could lead to insulation failure, reduced lifespan of the conductor, or even fire hazards. Understanding derating is crucial for any electrician to ensure that installations comply with safety codes and effectively manage the performance of electrical systems.