When the distribution line passes through the plastic pipe, can it be laid directly in the ceiling?

Yes, but it's best to fix it on top.

Wearing plastic pipes can be laid directly in the ceiling.

First of all, it is necessary to clarify a copy point: electrical wires.

The attack pipe is laid directly on the ceiling, and there is no such thing as "dark application", and Du Junzhi should be regarded as "open application". dao

When it is a fire distribution line (except for MI cables) and laid in the ceiling (i.e., open laying): 1) If it is a high-rise civil building, according to Article GB50045-95 (2005 Edition) of the Code for Fire Protection Design of High-rise Civil Buildings: "When laying open, a metal pipe with fire protection or a closed metal trunking with fire protection should be worn.

2) Buildings other than 1) shall comply with Article GB50016-2006 of the Code for Fire Protection Design of Buildings: "When laying in the ceiling (including laying in the ceiling), metal pipes or closed metal trunking shall be worn, and fire prevention measures shall be taken."

When it is a non-fire distribution line:

1) For buildings applicable to Building Regulations GB50016-2006, Article GB50016-2006 of Building Regulations shall be implemented: "Distribution lines..."When laying in the ceiling with combustibles, it is advisable to use fire protection measures such as metal pipes, closed metal trunking or plastic pipes of non-combustible materials".

2) Buildings other than 1) shall implement Article GB50054-95 of the "Low-voltage Distribution Design Code": If the distribution cable is laid in the roof of the building, "metal pipes and metal trunking must be used."

In general, there is no problem, but if it is easy to enter mice, it is better to have a steel pipe.

First of all, it should be clear that the electrical conduit is laid directly in the ceiling, and there is no such thing as "dark dressing", which should be regarded as "open application".

When it is a fire distribution line (except for MI cables) and laid in the ceiling (i.e., open laying): 1) If it is a high-rise civil building, according to Article GB50045-95 (2005 Edition) of the Code for Fire Protection Design of High-rise Civil Buildings: "When laying open, a metal pipe with fire protection or a closed metal trunking with fire protection should be worn.

2) Buildings other than 1) shall comply with Article GB50016-2006 of the Code for Fire Protection Design of Buildings: "When laying in the ceiling (including laying in the ceiling), metal pipes or closed metal trunking shall be worn, and fire prevention measures shall be taken."

When it is a non-fire distribution line:

1) For buildings applicable to Building Regulations GB50016-2006, Article GB50016-2006 of Building Regulations shall be implemented: "Distribution lines..."When laying in the ceiling with combustibles, it is advisable to use fire protection measures such as metal pipes, closed metal trunking or plastic pipes of non-combustible materials".