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I was walking through a house during the middle of construction and came across what appears to be a recpticle attached to a pvc pipe that seems to pass a low voltage wire. Also connected to the receptacle was a 14 gauge wire. enter image description here

bigmike7801
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2 Answers2

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That appears to be a central vacuum system. The LV wire is to turn the vacuum on via a relay. Hard to tell from the picture if the end of the wire has simply been tucked into the pipe awaiting the final cover-plate install that it will be pulled out and wired to (correct) or if some genius ran the wire inside the vacuum tubing (incorrect.) I would bet on the correct case, though.

The 14 gauge wire would provide AC power for a beater-brush or similar accessory on the vacuum-hose.

Ecnerwal
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This question already has a very good answer but I wanted to provide a couple of pictures that will provide some additional clarity to the installation and usage.

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enter image description here

Michael Karas
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