Do explosion-proof distribution boxes need to be cross-wired

In the explosion-proof enclosure with an explosion-proof environment hazard level of 2, the power supply line shall use aluminum core wires or cables with a cross-section of 4mm² or more, and the lighting line may use a cross-section of 2. Proper installation, wiring, and usage are critical to ensuring the safety and functionality of these systems. Wire Protection: Wires should not be exposed to the air directly. For example, when connecting an explosion-proof pressurized enclosure. Wiring all fasteners are used galvanized parts, the secondary wiring needs to use black wire, and add casing sequencing; box of measuring instruments in the conductor should be well enameled tin; layered distribution box wiring should be considered trunking in and out. Always ask: "Does this need to be. When cable wiring is used, overhead lines of 10kV and below shall not cross the explosion-hazardous environment; when the overhead line is adjacent to the explosion-hazardous environment, the distance between them shall not be less than 1. 0 ft) of the floor), they shall be protected.