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
USNS Safeguard (T-ARS-50) USNS Safeguard (T-ARS-50) USNS "Safeguard" (T-ARS-50), (formerly USS "Safeguard" (ARS-50)), is the lead ship of her class and the second United States Navy ship of that name. "Safeguard" was laid down on 8 November 1982 by Peterson Builders, Sturgeon Bay, Wisconsin; launched on 12 November 1983; and commissioned on 17 August 1985. "Safeguard" is the lead ship of the newest auxiliary rescue and salvage class of vessels constructed for the US Navy. The rugged construction of this steel-hulled vessel, combined with her speed and endurance, make "Safeguard" well-suited for rescue and salvage operations throughout the world. The hull below the