Today, my bathroom was decorated with wires. Only the wiring workers in Yuba put four wires into four pipes and tied them together.

Traditional Yuba, from the switch to Yuba, must have at least 5 control lines (6-7 with warm air and lighting at the same time). In addition, the live wire and neutral wire of the power supply can penetrate into the cassette on the ceiling of the bathroom, or can be separately wired and fixed above the ceiling, and the cassette on the ceiling can be connected with corrugated pipes (both metal and flame retardant plastic). ?

The following figure shows the wiring on the ceiling, in which arrow A is the power cord worn by the box left by the original developer (the conduit is in the ceiling); B and C are the junction box and conduit of the new cloth; D is bellows.