group3Name is a read-write text field (up to 64 characters) that lets an admin assign a human-readable label to logical receptacle group 3, one of up to 16 groups the Unity PDU can organize its outlets into. Naming the group matters because group 3's outlets are tracked and reported together, so a clear name helps an admin recognize what that aggregated set of receptacles represents when reviewing grouped status or alarms. For example, an admin might set group3Name to describe a redundant server pair's combined draw, so group 3 is immediately identifiable in the PDU's group listing rather than just showing as 'Group 3'.