一、北美洲的AWG系统（North Amercia）                                                               
        1、是以接线号作为标称：如18AWG或16AWG。                                                       
        2、Conductor  colour  codes导体颜色标称：                                                       
        L：Live（hot）火线                        Black                黑               
        N：Neutral  中线                        White                白               
        E：Earth（ground）地线                        Green                绿               
        第四条导线                        Red                红               
        第五条导线                        Yellow                黄               
        第六条导线                        Orange                橙               
                                                               
二、Harmonized协调系统                                                               
        1、是以平方毫米作为标称： 如0.75mm2。                                                       
        2、Conductor  colour  codes导体颜色标称：                                                       
         L：Live（hot）火线                       
            Brown                棕               
         N：Neutral  中线               
         Blue                蓝               
         E：Earth（ground）地线               
         Green/Yellow                绿/黄               
                                                               
三、日本JIS线分类                                                               
        Calss                                                Symbol       
        PVC insulated single core cord                                        VSF       
        Heat-resistant PVC insulated single core cord                                HVSF       
        PVC insulated twin-twisted cord                                        VTF       
        Heat-resistant PVC insulated twin-core cord                                HVTF       
        PVC insulated flat cord                                                VFF       
        Heat-resistant PVC insulated flat cord                                HVFF       
        PVC insulated cabtyre round cord                                        VCTF       
        Heat-resistant PVC insulated cabtyre round cord                        HVCTF       
        PVC insulated cabtyre oval cord                                VCTFK       
        Heat-resistant PVC insulated cabtyre oval cord                        HVCTFK       
                                                               
        V        polyvinyl chloride                        聚氯乙烯
        SF        single core flexible cord                        单芯软电线
        TF        twin-twisted flexible cord                        双芯绞合软电线
        FF        flat flexible cord                        扁形软电线
        CTF        cabtyre cord                        圆形电线
        K        oval                        卵形
        H        heat-resistant  insulation                        耐热绝缘
                                       
四、协调线材编码系统                                       
        H 0 5 V V    F 3 G 0 7 5                               
                                       
1        TYPES：H协调系统；A其它标准                               
2        Voltage rating电压：300/300；300/500；450/750。                               
3        导体绝缘：V：PVC；R：橡胶；S：硅橡胶；*******                               
4        电线护套：V：PVC； R：橡胶；T：编织结构。                               
5        特别（不常用）                               
6        导体：扁型，分隔电线；扁型，不分隔电线。
7        导体结构：单支；绞合；幼细-固定装置；幼细-软线种；特幼细-软线种；天梳线。
8        导体数目：2；3；4；5；6。
9        地线：G：有地线导体；X：无地线导体。
10        导体面积：0.75；1.0。
       
注：        0.5平方毫米线材不能超过2M长；
        1平方毫米线材超过2M长,使用10A的连接器；
        1.5平方毫米线材超过2M长,使用16A的连接器；