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What is this? old Voltage reducers?

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  • What is this? old Voltage reducers?

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    What are the two things coming out of the jbox. The black one say Central Control 110 V 50-600Y. The silver one Liberty 110V 60 cycles 10 volts bell. I take it they are both old voltage reducers?
    The silver one for the door bell. And the black one for I don't know? something maybe to do with old telephone?

  • #2
    They're both bell transformers. Faulty installation too - no romex wire connectors to the box even with loom on the wires.

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    • #3
      Thanks. Old KT but the least of my problems. Do you need two of these for one door bell? It has always been a single family house so may be someone to lazy to remove one while replacing it?

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      • #4
        could be one to supplement the other but you can't series them up like a battery. If you are concerned replace both with one rated 120 volts primary - 24 volts secondary.

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        • #5
          Could one be the front door, the other the back door?

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          • #6
            Are both transformers still wired? Can you trace the lines?

            The black one looks a bit older than the silver, so the silver may simply be a replacement. I don't think phone systems used transformers that far back. I think that was a 50's-60's thing. That black one is likely from the 20's-30's.

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