what guage wire for outside light (covered area)


  #1  
Old 10-26-14, 01:12 PM
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what guage wire for outside light (covered area)

Am repairing an outside light where the bulb keeps blowing and the wire was old.
It hangs under a covered area so is not really exposed to the rain but could be exposed to humidity and cold.
What guage wire should I use for this? It's probably just going to have an energy saving bulb in it. It connects to a junction box that is housed in brick at the moment.
It's on a 15A circuit powering 3 lights and a receptacle.

Also, if I replace the light bulb holder does it need to be metal?I assume plastic will crack after repeated -30 degrees celsius in winter.
 

Last edited by qwertyjjj; 10-26-14 at 01:38 PM.
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Old 10-26-14, 02:09 PM
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A 15 amp circuit always requires #14 or larger. The fixture should be rated for outdoor use even if partially protected from the weather.
 
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Old 10-26-14, 02:45 PM
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On most indoor lamps it seems like the wires are thinner than that used in the nm cable that connects to it?
ie the loose wire you have in your lounge coming from receptacle to lamp.
For example lamp wire is 18 guage
 

Last edited by qwertyjjj; 10-26-14 at 03:02 PM.
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Old 10-26-14, 03:14 PM
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The light should come with the wires so I don't understand your question. If you are trying to replace fixture wires better to just replace the fixture.
 
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Old 10-26-14, 03:33 PM
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The fixture is fine, it's an old metal holder/frame but the bulb holder/connector and the wires are old and need to be replaced.
I am wondering which guage to use for the light wire. Most lamps do not seem to use the 14 guage like hidden in the walls, they seem to use something thinner.
 

Last edited by qwertyjjj; 10-26-14 at 04:01 PM.
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Old 10-26-14, 04:28 PM
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Fixture wire is special purpose with a higher temperature rating for the insulation then house wiring. A lot easier to just replace the fixture.Try a lighting store for the wire if you are determined to rewire it.
 
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Old 10-26-14, 04:43 PM
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It matches 2 other fixtures, which is why I want to replace it.
So, what type of wire am I supposed to use?!
 
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Old 10-26-14, 04:47 PM
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Use #18 or # 16 fixture wire. Use something with at least a 90 rating.
 
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Old 10-26-14, 05:59 PM
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I would probably use 16 AWG THHN/THWN.
 
 

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