| The C-2 through C-10 were the first Westinghouse polyphase meters to have a style number for each
configuration (C-2: 3-phase 3-wire, C-3: 3-phase 4-wire Y 3-stator, C-4: totalizing, C-5: 3-wire network, C-6: totalizing, C-7: 3-phase 4-wire delta 2 stator, C-8: 3-phase 4 wire Y 2 1/2 stator, C-9: 3-phase 4-wire delta 3 stator, and C-10: 2-phase 5-wire). The stators were the same as used in the OC singlephase meter. |
 Westinghouse Handbook on Watthour Meters |