Wiring method for 220VAC power cables in Class A workshops
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Hello everyone, I have a question: can the 220VAC power cables in Workshop Class A be routed through cable trays? Are there any regulations that prohibit it? What do people usually do? We have a baijiu storage facility; explosion-proof cabinets are installed in Area 2, and the power cables are laid using cable trays, with the cables entering the cabinets through pipes. Some experts raised objections, stating that pipes are required in Class A workshops, and the owner asked us to provide evidence for this requirement. I couldn’t find any regulations prohibiting the use of cable trays; the Code for Design of Electrical Installations in Explosive Environments and the Code for Design of Electrical Cable Engineering both contain provisions regarding the use of cable trays. I would like to ask if anyone else knows of any regulations that I might have missed. Thank you all
According to the standards I am aware of, 220VAC power cables in Class A workshops can generally be routed through cable trays. Cable trays are a common method for cable installation, and they are also widely used in industrial settings. However, the specific regulations may vary by region and industry. It is recommended that you refer to the following standards and regulations to determine the requirements applicable to your industry: 1. \"Code for Design of Electrical Installations in Industrial Enterprises\" (GB 50054), which is a Chinese standard that focuses on the design, installation, and acceptance of electrical installations in industrial enterprises, including cable laying methods. 2. \"Safety of Electrical Equipment for Use in Explosive Environments\" (GB 3836) – this is a Chinese standard that specifies the safety requirements for electrical equipment used in explosive environments; it may also address the methods of cable installation. 3. Relevant standards from the International Electrotechnical Commission (IEC), such as the IEC 60079 series, which are globally recognized and provide detailed regulations for electrical equipment used in explosive environments. Furthermore, if your baijiu storage facility is located in a special environment, such as an area prone to fire or explosion, you may also need to comply with specific explosion-proof requirements. You can consult professional electrical engineers or explosion-proof experts to obtain more detailed advice and guidance. .
Hazardous areas for fires are defined in GB 50016; please refer to clause 10.2 there. It is not explicitly stated that cable trays cannot be used, but in certain situations only enclosed trunking or conduit can be employed.
I recommend that you check the following specifications, and you will be able to draw a conclusion. 1 \"Code for Telecommunication Design in Petrochemical Industries\" SH/T3153-2021; 2 \"Code for Construction and Acceptance of Cable Trays in Petrochemical Industries\" SH/T3569-2020.
An expert who doesn’t provide evidence is just talking nonsense
I took a look; it wasn’t mentioned. I’m using a trough-type cable tray with a cover