Auxiliary tool for measuring insulation resistance of secondary cable core wire

The utility model discloses an auxiliary tool for measuring the insulation resistance of a core wire of a secondary cable. The auxiliary tool comprises an insulated soft copper wire, a grounding wire clamp and a plurality of elastic wire noses, one end of the insulated soft copper wire is electrically connected with the grounding wire clamp; the plurality of elastic wire noses are fixedly installed on the insulated soft copper wire, and the conductive parts in the elastic wire noses are electrically connected with the insulated soft copper wire. The conductive part comprises at least one metal spring piece, and the middle of the metal spring piece protrudes towards the center of the elastic wire nose. According to the utility model, the insulating soft copper wires are arranged, so that the risk of short circuit of live parts in the screen cabinet is avoided; by arranging the plurality of elastic wire noses and utilizing a unique internal conductive part structure, a stripped core wire of a secondary cable ca