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Cat 3 Cable?

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How many pairs of wires are in Cat3 cable? Thanks for your help! Linda

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by ann777

Cat 3 and Cat 5 are the same. They have 4 pairs of wires within.

Two pairs are activated or used. You may find that some of your Cat 3 or Cat 5 wiring are only wired with 2 pairs (or four wires) in each connector. While that technically is "not-standard" (to only connect the two active pair to the connectors on either end), those cables will function just as well as a complete 4 pair cable.

Sometimes the wires in a single cable are split and also used for voice -- in which case all of the cable is being used.

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