When a cable type is assigned a wiring system code it means that a cable, representative of its group as defined by AS/NZS 3013, has satisfied the test criteria for that rating.
In order to understand what a WS rating means, reference to section 3 of AS/NZS 301 3 is recommended, however we have prepared a brief overview of how the WS ratings relate to the electrical and mechanical performance of fire rated cables and elements in both normal service and fire conditions.