NW type fireproof wire cable with A-level combustion performance

The invention relates to the field of cable manufacturing, in particular to an NW type fire-resistant wire and cable with the combustion performance level A. The NW type fire-resistant wire and cable comprises a wire core, an insulating layer, a shielding layer, a waterproof layer, a fireproof layer and a sheath which are sequentially wrapped from inside to outside, and the wire core comprises a copper conductor; the insulating layer comprises powdery magnesium oxide, the particle size of the powdery magnesium oxide is 0.5-1 [mu] m, and the sheath is a copper sheath; the outer diameter of the cable does not exceed 20mm; the shielding layer comprises a shielding outer layer and a shielding inner layer, the shielding inner layer is a copper foil attached to the insulating layer, and the shielding outer layer is formed by weaving a plurality of copper wires; the copper foil is a composite copper foil doped with particulate matters; the preparation process of the cable comprises a test step. According to the inve