Electrical equipment is designed to accept a wide range of input voltages about its nominal design centre. However, if the actual supply is higher than necessary the equipment will consume more power than needed and in many cases, equipment life is reduced, effectively increasing the cost of ownership. A 230V linear appliance operated at 240V will consume approximately 9% more energy than necessary. A voltage reduction within statutory limits can produce up to 25% (subject to load) reduction in energy consumption and in addition will extend the life of many types of electrical apparatus. The reduction of the supply voltage to a controlled (side adjustable level, allowing equipment to operate at Reduce utility optimum efficiency thus lowing power consumption, overall running and ownership cost.