Is it ok to use PVC pipe for lighting and wiring in steel structure workshop? Are there any relevant regulations?

1. The lighting pipes of the steel structure workshop shall be made according to the design and construction drawings.

2. The fire resistance grade of industrial equipment in the steel structure workshop determines the materials used in the pipeline. PVC pipes cannot be used for those with high fire protection grade. Because, the specific requirements of fire prevention: when the temperature is above 225 degrees, the conductor must be able to keep for 3 minutes without being burned out. PVC pipes can't do it.

3. If PVC pipe can be used, it should be noted that the current carrying capacity of the conductor passing through the steel pipe will decrease by more than 1/3 after passing through the PVC pipe, because the heat dissipation of the PVC pipe is poor.