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Old 11-29-2013, 04:07 PM   #1
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Fixture with no colored wires


I have a simple lighting fixture I want to install; it has two wires and a ground wire, but the wires are not sheathed in plain cable, in other words, not delineated white or black.

Is this a safe fixture to install, and if so, anything I need to know about attaching to the black and white wires in the box?
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Old 11-29-2013, 04:17 PM   #2
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The ribbed or identified conductor splices to the white from the ceiling.
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Answers based on the National Electrical Code. Local amendments may apply. Check with your local building officials.
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Old 11-29-2013, 04:55 PM   #3
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Don't see any ribbing or other obvious indicator. Any ideas, or should I just chuck it?
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Old 11-29-2013, 05:07 PM   #4
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Use your fingers to feel the clear insulation. You can generally feel the ribbing (ridges) easier than seeing them. Some wires will have a single rib, while others use multiple ribs.

The ultimate test is to use either an ohm meter or a continuity meter. One of those wires will have continuity between the end and the threaded portion of the socket. That would be the neutral.
The other wire would show continuity with the raised blade in the bottom of the socket. That would be the hot.

I generally mark the hot with a large black band, put on with a sharpie.
That way you can readily ID it next time.
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Old 11-29-2013, 05:14 PM   #5
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It's easy to check with a multimeter. Set your meter to continuity and place one lead on the little metal tab at the bottom of the base where the lightbulb screws in. Put the other lead on one of the wires. If it beeps you have found your hot.
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