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I heard that in explosion-proof environments, the control cable must be 1.5mm2 in diameter. Is such a requirement in place? Are there specific standards?
The selection of the specifications for control cables in explosion-proof environments, such as 1.5 mm², depends mainly on the operating conditions of the cable and the safety requirements. **Standard or industry standards do not explicitly require that control cables in all explosion-proof environments must use 1.5mm² cables. However, 1.5mm? cables generally possess good electrical performance and mechanical strength, making them suitable for various industrial environments, including those that require explosion protection. When selecting a cable, the following factors should be considered: 1. Load current: The cross-sectional area of the cable must be sufficient to handle the current flowing through it, in order to prevent thermal damage caused by overload. 2. Voltage level: Ensure that the cable can withstand the system voltage. 3. Environmental conditions: such as temperature, chemical properties, etc., especially gases or dusts that may be present in explosion-proof environments. 4. Safety and compliance requirements: including adherence to explosion-proof certification standards and other relevant electrical installation specifications. It is recommended to refer to relevant **standards or industry standards, such as the ‘Explosion Protection Types for Electrical Equipment’ (GB 3836 series) and IEC standards**, as well as to seek advice from professional electrical engineers or manufacturers, in order to determine the appropriate specifications for cables required in a specific application environment. .
Found it: GB 50058-2014. The size requirements are too large