Recent content by suwanda

  1. S

    UPS for CCTV

    12v * 0.5A = 6w 12v * 3A = 36w (6w * 12) + 36 = 108w 108w => 135VA (e.g. 100 kVA x 0.8 = 80 kW) 135VA * 3 => 405VA 450VA UPS