DIY Home Improvement, Remodeling & Repair Forum > DIY Home Improvement > Electrical and Wiring > Adding a light & switch to a room?




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Old 10-14-2013, 05:40 PM  
savatreatabvr
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Default Adding a light & switch to a room?

My predicament is I want to add a light above my pool table controlled by a wall switch. Can I run the new wire off of a wall outlet?



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Old 10-14-2013, 09:40 PM  
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Ok this drawing may be easier to understand? I hope this is correct so I don't burn my house down, lol!





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Old 10-14-2013, 10:06 PM  
nealtw
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Yes, Use short peice of wire "pigtails" to connect to the outlet instead of wiring to both sides of the outlet. Just wire nut the two black wires and a pigtail together, and the same with the white.
You can go to either the light or the switch first which ever is easiest and just cut the wire at the box and join the two white wires with wire nuts, don't forget the grounds and welcome to the site.
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Old 10-14-2013, 10:33 PM  
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Originally Posted by nealtw View Post
Yes, Use short peice of wire "pigtails" to connect to the outlet instead of wiring to both sides of the outlet. Just wire nut the two black wires and a pigtail together, and the same with the white.
You can go to either the light or the switch first which ever is easiest and just cut the wire at the box and join the two white wires with wire nuts, don't forget the grounds and welcome to the site.

Thank you nealtw for your response, I understand what you're saying about pigtailing to the outlet instead of wiring the other side but why, that's what I don't understand.
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Old 10-14-2013, 11:37 PM  
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http://electrical.about.com/od/recep...eceptacles.htm
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Old 10-15-2013, 05:53 AM  
bud16415
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Adding a single light at the end of the run I personally wouldn’t have a problem doing it off the screw terminals. I have often wondered about the merits of the pigtails and wire nuts method and if a wire nut connection is as secure as a connection made under the screw. On a long chain of outlets they say the reason is if the outlet fails the whole string will go down and also something about internal resistance of each outlet. That I don’t know but I’m sure there is resistance to the wire nut connection that can vary a lot based on how well the wires are in contact. A screw is in my mind much more repetitive and secure. The biggest advantage to pigtails I think is if you need to change the outlet or that there is no confusion as to what wire is coming into the outlet feeding it.

The other method is to get a pool table light with a swag cord and line switch and just plug it in the outlet. No need to rip up the walls and ceiling.
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Old 10-15-2013, 07:11 AM  
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Your connections are correct but I don't like your description of 'left the whites uncut'. Exact how did you run your cables? Did you use a box for the switch? It should have taken two cables in the switch box requiring you to connect the two whites together.
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Old 10-16-2013, 08:15 AM  
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Your connections are correct but I don't like your description of 'left the whites uncut'. Exact how did you run your cables? Did you use a box for the switch? It should have taken two cables in the switch box requiring you to connect the two whites together.
Yes I apologize for the misleading drawing, I've got one cable, (1 black wire & 1 white wire) going into the switch box and one cable coming out going to the light. The white is uncut in the box. My next project I want to add two switches to control three lights, I'll start a new thread for that one. Thank you for your replies it's helped out tremendously!
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Old 10-16-2013, 09:54 AM  
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How did you manage to feed the cable through the box without cutting it? I never heard of any one do that.
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Old 10-16-2013, 10:11 AM  
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I don’t know but I doubt it’s against code. I have seen it done. When the wiring is exposed just double it over and stick it thru the hole in the box and strip the middle. I have seen barns where they ran wire for lighting and every so often striped a couple spots and used a porcelain light fixture with the bare wire slipped under the screw heads, whole row of lights and never cut the feed wire.


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