Flame retardant non-halogenated thermoplastics for use in the ultra thin insulative wall of a cable are disclosed. Suitable thermoplastics include polyamides, including polyamides comprising a repeating unit of amino caproic acid or A-D, wherein A is a residue of a dicarboxylic acid selected from the group consisting of adipic acid, isophthalic acid, terephthalic acid, 1,4-cyclohexanedicarboxylic acid, rescorcinol dicarboxylic acid, naphthalenedicarboxylic acid, and mixtures thereof, and wherein D is a residue of a diamine selected from the group consisting of m-xylylene diamine, p-xylylene diamine, hexamethylene diamine, ethylene diamine, or 1,4 cyclohexanedimethylamine, and mixtures thereof. Suitable flame retardants disclosed include nitrogenous phosphate and a nitrogenous sulfonate, and mixtures thereof, and ethylene diamine phosphate. The insulative wall of the cable may also include hydrotalcite or hydrotalcite-like compounds and metal deactivators such as 1,2bis(3,5-di-tert-butyl-4-hydroxyhydrocinnamoyl)hydrazine.