Secondary or service wire that contains three phase conductors wrapped around a single neutral conductor is referred to as:

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When a single service or secondary cable carries three phase conductors wrapped around one neutral conductor, the arrangement is described as quadruplex. This four-conductor assembly is the standard way to provide a three-phase system with a neutral in one insulated bundle, making it distinct from other cable formats.

A triplex cable, by contrast, is typically used for single-phase service drops and involves two insulated conductors plus a neutral, not three-phase with a central neutral. A bundle is just a general term for multiple conductors grouped together and doesn’t specify the exact number or arrangement. Quadruple isn’t a standard term for this configuration, so it isn’t used.