Heavy rubber sheathed cable for use in medium mechanical stress in dry, damp and wet rooms, in agricultural premises and outdoors. It is used for equipment in commercial operations, e.g. hot plates, hand lamps, power tools such as drills or circular saws. The cable is suitable for fixed installation on plaster as well as in temporary structures. It may be operated with a rated voltage of up to 1000 V AC or a DC voltage of up to 750 V to ground when laid in protected, fixed positions in pipes or in equipment.