FRNCFlame Retardant Non-Corrosive (cable)
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EVM is a copolymer of ethylene and vinyl acetate which is particularly suitable for use in FRNC (fire retardant non-corrosive) cables.
As, however, the combustion gases of PVC, CM, CR and compounds of similar composition are corrosive and irritate the eyes and respiratory passages, these materials are unsuitable as base polymers for FRNC cables.
The filler most widely used for FRNC cables is aluminium hydroxide (ATH).