FLAME- RETARDANT ELECTRICAL CABLE

A flame-retardant electric cable (10;20) having a core comprising at least one electric conductor (11), an electrically insulating coating (12) and an outermost layer (13a;14) made from a flame-retardant polymer composition comprising:a) polyvinylchloride (PVC) as base polymer;b) 25-45% (70-110 phr) by weight of at least one metal hydroxide;c) 0.4-3% (about 1-8 phr) by weight of an optionally surface-treated montmorillonite having average particle dimensions of from 5 to 20 µm;d) 1.2-3% (about 3-8 phr) by weight of antimony trioxide;wherein the sum of the amount of montmorillonite and antimony trioxide is at least 5.5 phr and wherein the antimony trioxide and montmorillonite are in a ratio of from 1:0.1 to 1:2.5.Such a cable has improved reaction to fire performances, especially reduced dripping or absence of dripping during burning, which render it compliant with the requirements of the more recent international standards.