WIPCOOL Inverter Phase CheckerProduct Overview The WIPCOOL APC1000 is a non contact inverter phase checker that revolutionizes traditional phase detection methods. Unlike conventional tools that require direct contact with exposed live wires, APC1000 uses clamp on, non contact detection technology. No wire disconnection, no direct contact with high voltage just clip the three clamps onto the insulated layers of the three phase wires and get fast, safe, and reliable results. Key