Electrical test and measurement equipment is used to test and verify safety and operating parameters of electrical equipment. Quality electrical test and measurement tools offer electricians solutions for safety and accuracy, with user friendly interfaces. Typical electrical test and measurement equipment test insulation resistance, continuity of protective conductors and equipotential bonding, residual current devices, line impedance, fault loop impedance, earth resistance, phase sequence, voltage and frequency, PE test terminal, over voltage category, HV, step / contact voltage and earth resistance.