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Old 04-23-2019, 04:12 PM   #1
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landscape lighting wire


I am attempting to repair my old outdoor lighting and discovered that the wire in the ground has three (3) wires it looks like a 10 gauge outdoor wire. I purchased 12/2 outdoor wire; ran some lights with a new transform and everything worked. I discovered that the old wire that runs under my driveway is a 3 three wire. Why are there three wires? do I have to get different connectors with the three wire or shoud I just leave them and run new wire? The old transformer still works and puts out 12.5 volts.
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Old 04-23-2019, 04:34 PM   #2
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Re: landscape lighting wire


There may have been two separate circuits to distribute the load so there is less voltage drop at the end of the line.
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Old 04-25-2019, 02:39 PM   #3
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Re: landscape lighting wire


It also provides an extra or backup wire should one of the two fail. I actually run outdoor plastic conduit in such situations so I can pull a new wire in the future rather than have to saw cut the concrete, etc.
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Old 04-25-2019, 04:33 PM   #4
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Re: landscape lighting wire


sure is hard to pull this wire apart. I am trying to splice a section that is under concrete. Thanks for your response.
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Old 04-25-2019, 04:56 PM   #5
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Re: landscape lighting wire


Can you post a picture? Never seen any 3 wire low voltage landscape wire. Maybe someone used UF cable.
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Old 04-25-2019, 06:46 PM   #6
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Re: landscape lighting wire


It is UF Cable. Wondering if I can splice the 12/2 wire to make it under the concrete. Can't pull the UF through so splicing is my only option if i use the UF wire.

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Old 04-25-2019, 11:01 PM   #7
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Re: landscape lighting wire


If you working on the 12 volt side of the system you can do whatever you want.
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Old 04-26-2019, 06:56 AM   #8
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Re: landscape lighting wire


Thanks for the reassurance and information. Its great to get advice and guidance from pros.
Thanks again!
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