现在有一个小问题，请大家给个答案：关于电缆的载流量问题

我在一本《实用电工手册》上看到

通用橡套绝缘软电缆（电线）连续负荷载流量/A　（铜，450/750V)

YQ   YQW   YZ   YZW    YC   YCW

截面/mm2     一芯　　　　二芯　　　　　三芯　　　　　四芯

35                      145               120                   100                          98

50                      175                145                   125                         115

70                       220               185                   160                         140

95                       265                220                   195                         170

120                     310                                          225                         195

150                     360                                          255                          220

185                     410                                  

240                    490

300                    560

400         &nbs