These cables are used for transmission of analoge and digital signals in instrument and control systems at chemistry and petrochemistry industry plants, power plants, natural gas and petroluem plants, etc… . Instrumentation cables are not allowed for direct connection to a low impedance sources, e.g. public mains electricity supply. These cables are not recommended for direct burial. They are for indoor and oudoor installation, in dry and wet locations; on racks, trays, in conduits.