電力電纜的選擇應(yīng)遵照以下原則：

Power cable selection should follow the following principles:

（1）電纜的額定電壓要大于或等于安裝點(diǎn)供電系統(tǒng)的額定電壓；

(1) rated voltage of cables installed point to is equal to or greater than the rated voltage of power supply system,

（2）電纜持續(xù)容許電流應(yīng)等于或大于供電負(fù)載的大持續(xù)電流；

(2) cable continued allow current should be equal to or greater than the maximum continuous current power supply load,

（3）線(xiàn)芯截面要滿(mǎn)足供電系統(tǒng)短路時(shí)的穩(wěn)定性的要求；

(3) wire core section should satisfy the stability of the power supply system short circuit requirements;

（4）根據(jù)電纜長(zhǎng)度驗(yàn)算電壓降是否符合要求；

(4) according to the cable length checking whether the voltage drop requirements,

（5）線(xiàn)路末端的小短路電流應(yīng)能使保護(hù)裝置可靠的動(dòng)作。