Cable assembly

The invention discloses a cable assembly, which comprises a three-wire-core medium-voltage fire resistant cable and an intelligent water pump, and is characterized in that the three-wire-core medium-voltage fire resistant cable is provided with three insulated wire cores, a protective layer and a plurality of metal tubes, the protective layer covers the external parts of the three insulated wire cores, first gaps are formed between the three insulated wire cores and the protective layer, the plurality of metal tubes are located in the first gaps respectively, each metal tube is abutted betweenthe protective layer and at least one insulated wire core, and the metal tubes are internally filled with a cooling liquid; and the intelligent water pump is provided with a temperature sensor, the plurality of metal tubes are connected to the intelligent water pump, and the intelligent water pump is switched on when the temperature sensor detects the temperature of the cooling liquid reaches a trigger temperature of the