If the decoration of the ceiling when the wire is not threading, how much harm you?
The pipe is usually used when the wall is used for the wall. First digging, re-pipe, and then lead in the tube. Finally, cement is used to close the slot.
So that the first can have a protection of the wire to avoid the wire plastic insulation sleeve for a variety of reasons caused by rupture caused by short circuit. Also extended the service life.
My house is just a balcony, bathroom ceiling, is the PVC buckle board, I did not wear thread tube
If it is gypsum ceiling, should be worn, gypsum is corrosive
Toilet easy to leak, to wear pipe.
Metal ceiling to wear pipe, will leak.
Other do not wear, are cut corners.
Because it is the first pipe, in the lead. So that the alignment can have a layout and control.
Also, as the latter need to replace the wire, as long as the wire out, then the introduction of new lines can be. If there is no pipe, then the wire will be bonded with the concrete wall, to replace all the knock.
General ceiling above, if not into the wall of the line, there is no threading. One is not necessary, the second is not convenient post-maintenance operations.
