I'm adding a walk in closet in what is now unfinished attic space. It will be attached to a bedroom in the finished side of the attic and it's above a living room. I need to "tap in" to existing wiring to add the switch and outlet, preferably the wiring from the bedroom so that it's on the same breaker. I have an idea of how this is accomplished, but I was hoping someone with experience could explain it so that I can be 100% confident with what I'm doing.
Adding a light and outlet to new room
- Thread starter swindmill
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After doing a little more reading, I have the wiring from the source to the light, switch, and the outlet figured out. What I'm not 100% sure of is how to know if a certain receptacle is a good source of power. If I have an outlet with live/neutral/ground connected, can I simply run new 12/2 from the unused connections on that receptacle? Alternatively (maybe better), there is an outlet in the BR near where the attic is that I will never use. Can I remove that outlet and use that wire as a source?
Wuzzat?
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You could get a clamp-on ammeter
http://news.thomasnet.com/images/large/008/8194.jpg
and measure the typical current through the breakers in your panel that are handled by your candidate outlets.
Pick an outlet served by a breaker that typically runs well below it's rated 15A or 20A capacity.
If an outlet can run a hair dryer at full speed and full power, the wiring connection integrity is good all the way back to the panel.
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travelover
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If you are just adding a switch and outlet to a closet, I'd use 14 gauge wire vs 12 unless the circuit has a 20 amp circuit breaker. The heavier wire is much harder to work with.
Are you serious? This gear would cost more than hiring an electrician to perform the work on a one-time installation.
Wuzzat?
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Pretty much always.
If an electrician costs $100 and the gear costs $200, you should buy the gear or come up with a reasonable substitute* if there is at least a 50-50 chance that you will again need an electrician or the gear.
If the gear is $300, then you should buy the gear if there is at least a 50-50 chance that you will need an electrician or the gear twice more.
Place your bets!
*Just don't wear polyester.
"Polyester melts and burns at the same time, the melting, burning ash can bond quickly to any surface it drips on including skin."
Another angle: if the OP has
http://en.wikipedia.org/wiki/Risk_aversion
he should hire someone. Then some of what he pays that person goes into having that person assume the risk of doing the work.
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pick off the outlet you can get to. Match the wire size that is in there. Run to the outlet you want in closet, then to the switch, then to light. Turn off power, then hook all wires up to matching colors. Good luck...
Lightingguru
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The first thing that you want to check is how many plugs are already on the circuit as well as you will want to tie into the existing circuit with the same size wire example 12/2 to 12/2 so you do not creat a fire hazard.
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travelover
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Check your smoke detectors and homeowner's policy before you start
So Ohmy, did you come here to offer any real help or did you just come to bully the homeowners?
