Why can cables with different naming standards be used interchangeably in global projects?

Interchangeability is based on performance certification rather than nomenclature. High-performance fire-resistant cables are manufactured to meet IEC 60331 (tests for circuit integrity) or BS 6387, which are the global benchmarks for life safety systems. As long as the cable passes the required temperature/time threshold (e.g., 950°C for 3 hours), its functional equivalency is recognized by international engineers, regardless of whether it is labeled NH-YJV or an IEC-compliant equivalent.