In North America the inventor and entrepreneur George Westinghouse entered the electric lighting business in 1884 when he started to develop a DC system and hired William Stanley, Jr. to work on it.
En Norteamérica, o inventor e empresario George Westinghouse entrou no negocio da iluminación eléctrica en 1884, cando comezou a desenvolver un sistema de CC, contratando a William Stanley, Jr. para traballar nel.