PV Test leads for CAT III allow you to safely measure up to 1500 V using the CM276 IGM Clamp Meter with Thermal Camera. DC power measurement should be done safely in solar photovoltaic (PV) systems. Troubleshoot and maintain PV systems by testing solar panels and inverters. The leads consist of two male test tips connected to a 4 mm (0.15 in) encased banana plug on 127 cm (5 in) test lines.