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
Special Agricultural Safeguard imports that exceed tariff-rate quota volumes. The SSG is an alternative to the general safeguard provision of the GATT and is easier to invoke because it does not require a test of injury or threat of injury. In the Doha Development Agenda (DDA) negotiations, the United States, the Cairns Group, and many developing countries have proposed elimination of the SSG. Special Agricultural Safeguard The Special Agricultural Safeguard (SSG) is provision in the Uruguay Round Agreement on Agriculture. The SSG allows Member countries to impose additional tariffs on agricultural products if their import volume exceeds defined trigger levels, or if prices