What factors should be considered when selecting cables for explosive hazardous areas?

When choosing cables for explosive hazardous environments, key considerations include conductor material (copper core is mandatory for Class I areas), insulation strength (minimum 500V), and敷设 methods (e.g., steel conduit with 2MPa pressure resistance). Cables must avoid intermediate joints and use flame-retardant sheaths. Additionally, routing should maintain distance from ignition sources, with special sealing measures at wall/floor penetrations using flexible organic blocking materials or modular sealants.