Faber kabel sheathed cable flame retardant cable nym j series grey faber kabel 020337 the faber kabel 020337 is sheathed flame retardant cable ideal for use inside of buildings on and under plaster in dry and moist rooms as well as in walls and laid in concrete the cable is suitable for installation outdoors if protected against direct sun irradiation the grey cable has a bare copper conductor with a pvc outer sheath the cable has a voltage rating of 500v and an operating temperatur