Arch Rao is a former head of engineering at Tesla Energy, and he’s now the CEO of a company called Span, which he founded in 2018. His company produces one product: a smart electrical panel that ...

Fuse Boxes Use Consumable Fuses To Protect Against Overloads If you live in an older home, there's a good chance that there's a fuse box built into your power grid. In fact, the invention of fuse ...

A breaker box in your home may contain several circuit breakers, each of which has a switch that will flip off if an overload occurs. Once the cause of an overload is corrected, the breaker can be ...