Electrical wiring in the United Kingdom lawnmower does it need an RCD?" The risk of electrical shock on construction sites can be reduced by several measures, including reduction of the normal 230 volt distribution voltage to 110 volts for electrical lighting and power tools. By using a centre-tapped transformer, each conductor of the circuit is only at 55 volts with respect to earth. This reduces the chance of dangerous electrical shock when using power tools in wet locations. Where 230 volts must be used, a residual current device (RCD) can be used to detect small leakage currents and automatically isolate faulty equipment. In sites where hazardous
Name of Mexico to the formation of the Mexican Republic which formally is known as the United Mexican States. Complications arose with the capital's former colloquial and semi-official name "Ciudad de Mexico, Distrito Federal (Mexico, D.F.)", which appears on postal addresses and is frequently cited in the media, thus creating a duplication whereas the shortened name was "Mexico, D.F., Mexico". Legally, the name was Distrito Federal (Federal District or District of the Federation). This ended with the change in statute of Mexico City into a state in 2016. Today it is officially called "Ciudad de México, México" abbreviated CDMX, Mexico. The official name