If overvoltages (short-duration rises of voltage) can occur in an installation, the design and dimensions of the electrical insulation are also determined by the magnitude of possible over-voltages and by the short-term electrical strength.
Ray, North Dakota. Ray is a city in Williams County, North Dakota, United States. The population was 592 at the 2010 census.
Welcome to the Ray County, Missouri website. Ray County was organized in 1820 and on January 1, 1821, when Missouri became a state, it was one of the original 14 counties and at that time included the entire northwest corner of the state. It was named after the Honorable John Ray, a state legislator. Richmond became the permanent county seat on September 24, 1827.