JIS C 8305:2019规定了交流1000V和/或直流1500V以下的电气装置或通信设施中用于保护电线和/或电缆的刚性钢导管(以下简称导管)的尺寸、结构和试验方法。
JIS C 8305:2019 specifies the dimensions, constructions and test methods for rigid steel conduits, (hereafter referred to as conduits) used for the protection of electric wires and/or cables in electrical installations or communication facilities up to 1 000 V a.c. and/or 1 500 V d.c.