POWER SUPPLY CORD

PROBLEM TO BE SOLVED: To provide a power supply cord capable of improving safety and preventing the number of components from being increased or wiring from being complicated.SOLUTION: The power supply cord includes a plug 1 including a plurality of plug blades 11, and a load connection part connected to a load. The plug 1 includes two PTC thermistors 50 each detecting a temperature of the plug blade 11 one by one. The two PTC thermistors 50 form one series circuit and in the case where a resistance value of the series circuit becomes higher than a predetermined value, electrification from the plug blades 11 to the load connection part is turned off by a cutoff device 3. In the case where only a temperature of one PTC thermistor 50 rises, the electrification can also be turned off, thereby improving safety in comparison with the case where only one PTC thermistor 50 is included. Further, the number of components can be prevented from being increased or wiring can be prevented from being complicated differently from the case where the resistance values of the PTC thermistors 50 are individually monitored. 【課題】 安全性の向上が可能であって部品点数の増加や配線の複雑化が避けられる電源コードを提供する。【解決手段】 複数個の栓刃１１を有するプラグ１と、負荷に接続される負荷接続部とを備える。プラグ１は、１個ずつの栓刃１１の温度を検出する２個のＰＴＣサーミスタ５０を有する。２個のＰＴＣサーミスタ５０は１個の直列回路を構成しており、この直列回路の抵抗値が所定値よりも高くなったときに遮断装置３により栓刃１１から負荷接続部への通電がオフされる。一方のＰＴＣサーミスタ５０の温度だけが上がった場合でも通電をオフすることができるから、ＰＴＣサーミスタ５０を１個しか有さない場合に比べ、安全性の向上が可能となる。また、各ＰＴＣサーミスタ５０の抵抗値が個別に監視される場合と違い、部品点数の増加や配線の複雑化が避けられる。【選択図】図１