电线槽内的电线容量
根据安全准则，电线槽内的电线容量，应以下列两表作为参考，即电线槽的数值应等于或高于所藏电线的数值总和。
Trunking size is determined by mulitiplying the each single core P.V.C.insrlated cable sizes by the apptopriate factor shown in table A. This amount is compared with the factor shown in table B .The factor should either equal or exceed the final factor used.