求翻译：10． 穿入配管导线的接头应设在接线盒内，线头要留有余量150MM，接头搭接应牢固，绝缘带包缠应均匀紧密。是什么意思？

10. Penetration piping wire connector should be located in the junction box, thread the left margin 150mm, joints lap should be firmly tape wrapped even close.

正在翻译，请等待...

10. Penetrates the tubing wire the attachment to be supposed to be located in the connecting box, the end of a thread must leave leeway remainder 150MM, attachment joining should be reliable, the insulating tape wind should even close.

10. Piping wire into the connector should be located inside the junction box, head to 150MM, and take the strong support, insulated band wrapping should be even close.