Ideally soon electric as well as mechanical engineering companies will embrace reduced voltage electrical wiring even more than they do today (2012). You should separate your office or home electrical wiring into three classifications, 48V DC Low Voltage for Lighting as well as 48V DC Air Conditioning, 120V Air Conditioning for computers and wall outlets, 240V A/C for Cooling and also Heating. The illumination ought to be LV electrical wiring to a central factor where you can have the power supplies for the illumination, a good lights modern technology the LED will certainly never fail yet the Power Supply using existing readily available technology eventually will.