Live working. Voltage detectors. Two-pole low-voltage type|Surges (electrical), Instructions for use, Classification systems, Electric cables, Measuring instruments, Safety measures, Low-voltage equipment, Clearance distances, Thermal resistance, Performance testing, Vibration testing, Temperature, Dimensions, Live working, Dielectric-strength tests, Electrical safety, Drop tests, Adhesion tests, Electrical insulation, Signal devices, Environmental testing, Acoustic measurement, Type testing, Audible signals, Current measurement, Voltage, Equipment safety, Bend testing, Tensile testing, Detectors, Leakage paths, Humidity, Electrical testing, Impact testing, Electrical equipment, Testing conditions