New flush mount, need help with wires


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Old 06-21-15, 03:28 PM
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New flush mount, need help with wires

I am replacing a flourescent light fixture in a bedroom. I got the light down and the ceiling has 3 white wires wrapped together and a red wire. The new fixture has a white, black and what I'm guessing is a ground (has no colored coating, just clear and can see the wires). What do I do with the red? Do I connect it to the black? Also, do I just leave the ground wire unattached from the fixture (do I have to cap it?). The house was built in '54 if that helps.
 
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Old 06-21-15, 03:54 PM
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From what you are describing you have conduit in your house. That means there should be a metal box that you can attach your ground wire to.

Your fixture white goes to the white connection and your fixture black goes to the red wire.
 
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Old 06-21-15, 04:32 PM
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Thank you for your response. After looking up closer into the metal box, I found 3 black wires wrapped together that were tucked up into the metal box. Would you still hook it up as you stated? Also, just to clarify, would you attach the ground wire to one of the screws that I see on the top of the metal box?
 
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Old 06-21-15, 04:41 PM
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I found 3 black wires wrapped together that were tucked up into the metal box. Would you still hook it up as you stated?
Yes. The black are obviously constant hots because of color and more importantly there are more then one. The red on the other hand is a single wire and logically there would only be one wire from the switch. Also while not a rule most electricians use red (or yellow) as a switched hot in conduit systems.
would you attach the ground wire to one of the screws that I see on the top of the metal box?
Are they 10-24 machine screws in a tapped hole and are not used for fastening something. If the answer is no look for an unused hole in the back of the box that a (green) 10-24 ground screw will fit.
 
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Old 06-21-15, 04:48 PM
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Thank you so much! I will use one of the unused holes for the ground. I really appreciate your responses.
 
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Old 06-21-15, 04:51 PM
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Old 06-21-15, 04:56 PM
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Great picture, thank you.
 
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Old 06-21-15, 06:53 PM
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The house was built in 1954, I doubt you'll find a threaded hole in the box. You could use a grounding clip though. the box store sell them. You'd probably have to attach a bare #12 to the box with the clip and attach the fixture ground wire to the #12 with a small wire nut.
 
 

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