What do older homes typically use to prevent electrical overload and fires?

Older homes typically utilized fuses to prevent electrical overload and potential fires. Fuses are essential safety devices that contain a metal wire or strip that melts when too much current flows through, thereby interrupting the electrical circuit. This mechanism serves as a protective measure by stopping excessive electrical flow that could lead to overheating and fires.

While circuit breakers, ground fault interrupters, and surge protectors are modern devices designed to enhance electrical safety and protect against various risks, they became standard in later home constructions. Circuit breakers can be reset and reused, providing a modern solution to overload issues, whereas fuses need to be replaced after they blow. Ground fault interrupters specifically protect against electrical shocks by monitoring current flow and tripping when a fault is detected, and surge protectors safeguard against voltage spikes. However, these systems are part of newer electrical safety standards and were not commonly used in older homes. Thus, in the context of older homes, fuses were the primary device used for preventing electrical overload and associated hazards.