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I have a junction box where wires from 3 electric cables are connected together:

Is there a way I can hook up a light fixture to this box? The fixture looks like this:

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  • Can you tell which of the two potential always-hots is an always-hot? (The answer could be both or neither, by the way.) Also, what else is on this circuit? – ThreePhaseEel Oct 19 at 13:44
  • 3 black wires joined together are hot. Red and white wires are cold. Do you mean I should disconnect 3 black wires and check whether each of them is hot? – Leo Oct 19 at 14:01
  • I don't know what those cables are connected to -- they are in the basement, and run somewhere into the walls... – Leo Oct 19 at 14:04
  • Is there a wall switch that operates a light or outlet? Or one that you don't know what it does? – JACK Oct 19 at 14:12
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    You said the red wires were cold... was the other light on when you tested the red wires? – JACK Oct 19 at 14:33
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It looks like you plan on using the pull chain. If that’s the case I think you need a black wire from the fixture to the black marette and a white wire from the fixture to the white marette. If there is a terminal on the fixture for ground you would join it to the other grounds as well which I think have their own marette if I’m looking at that picture correctly. There are several experienced people involved with this conversation who you should consult with first, but I believe it’s the easy answer.

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