The Kenwood PS-30 power supply provides 13.8 VDC at 20 Amps intermittent or 15 Amps continuous. It features large heat sinks and automatic overload reset. The rear panel has a input voltage select switch, fuse holder and low amperage (5 Amp) terminals to operate accessories. Ripple voltage is less than 20 mW at 13.8 VDC 20 Amps. Input is 120/220 VAC 470W. 7.2 x 5.3 x 11.5 inches 19.6 lbs. (180x133x287mm 8.9 kg).