Are wires or cables required for wiring the lighting fixtures in explosion-proof areas? Are there any standards that specify the use of cables?

If you already have metal conduit and explosion-proof flexible hoses, then BV wire will suffice for use there.

Then ask the design institute to send you the regulations for review, and check on your own whether they are mandatory; there are quite a few new rules these days.

Personally, I think a cable should be used, because BV cables with explosion-proof connectors do not provide proper sealing and thus fail to achieve the explosion-proof effect

The old standards allowed wires to be placed inside steel pipes, but the new standards require cables; wires are no longer permitted

This post was last edited by chb1534 on 2017-7-31 08:23. 1. Clause 9.1.2 of GB3836.15-2000 stipulates: “Unsheathed single-core wires shall not be used as conductive wiring, unless they are installed within distribution boards, enclosures, or conduits.” “ 2. Article 5.4.1.2 of GB50058－2014 stipulates: “In areas with explosion hazards, except in distribution panels, junction boxes, or systems using metal wires for wiring, unshielded wires shall not be used as distribution circuits.” “ 3. The distribution panels, junction boxes, or enclosures mentioned in the previous two points are easy to understand; they refer to explosion-proof products in which wires and metal conduits can be used for the power distribution system. For such systems, one can refer to Article 13.2 of GB3836.2–2010. This article contains many details, so I won’t go into them here. In short, metal conduits must also meet the requirements for explosion protection, and they need to have gasket seals. This approach is widely used in the United States, but it is hardly ever employed in our country.