Thomas Edison suggested for Edison's anti-AC stance. One notion is that the inventor could not grasp the more abstract theories behind AC and was trying to avoid developing a system he did not understand. Edison also appeared to have been worried about the high voltage from misinstalled AC systems killing customers and hurting the sales of electric power systems in general. Primary was the fact that Edison Electric based their design on low voltage DC and switching a standard after they had installed over 100 systems was, in Edison's mind, out of the question. By the end of 1887, Edison Electric was
Thomas Edison National Historical Park Thomas Edison National Historical Park Thomas Edison National Historical Park preserves Thomas Edison's laboratory and residence, "Glenmont", in Llewellyn Park in West Orange in Essex County, New Jersey, United States. These were designed, in 1887, by Henry Hudson Holly. For more than 40 years, the laboratory had a major impact on the lives of people worldwide. Out of the West Orange laboratories came the motion picture camera, improved phonographs, sound recordings, silent and sound movies and the nickel-iron alkaline electric storage battery. The history of how the site became a National Historical Park is complicated. Edison's home was designated as