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Wiring the Home Addition
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" -Now with me is our electrician Steve Bradley. How are you doing Steve?"
" -How are you doing Bob."
" -Well, we've got the master bedroom here and it's a pretty big room. Now how do you get started? What have you done already?"
" -Well Bob we've pulled 2 home runs, 1 for the lighting circuit and 1 for the receptacle circuit. This here is going to be our main switching area."
" -Why do you need 2 separate home runs or circuits for the bedroom?"
" -With such a large room and the new high hats and everything. They have 4 high hats and some track lighting that they want--"
" --And high hats are the recess fixtures"
" --Recess fixtures, yes."
" -Yes. So when you've got that many specialties you might as well have 2 separate circuits."
" -Exactly."
" -Alright."
" -It keeps the lights from dimming when you use a certain equipment and--"
" --And this will be what 1,2,3,4 switches here?"
" -4 switches. 4 dimmer switches."
" -And they're at 48 inches. That's the standard height?"
" -48 is the standard."
" -Ok. Now Steve, this room is about 20 feet by, I think its 12 here if I look at the plywood, maybe 14 over there. What does the code require you in terms of receptacles? How, how many do you have to put in?"
" -Well they want receptacles in at 12-foot centers. 12 foot to center around the room, along any wall. It's not broken by a doorway."
" -Ok. So what we're doing over here, that means if you've got a 6-foot extension cord or--"
" --You could hit--"
" --whatever appliance--"
" --anywhere you put a light fixture or a lamp or a TV or a stereo you have a 6-foot cord on the back and could hit any spot on the wall."
" -You've already looped wire overhead from the, from the switch over there to this wall right?"
" -That's correct."
" -Show, show me what's happening over here."
" -Well we bought a feed in on the opposite side of the room and we've daisy-chained 3 wire around the room so that we can switch the circuits."
" -Those receptacles will be switched so that you can walk into the room and turn on a table lamp--"
" --Exactly."
" --for example."
" --Exactly."
" -How do you actually slice it?"
" -First thing Paul wants is a staple within 8 inches of the bar."
" -And that of course is the code requirement. Hope you haven't made a mistake."
" -We need a quarter inch of insulation inside the barks so we're gonna keep a little, we made a little thumb mark here and--"
" --Yes and by insulation you mean the, the vinyl coating on the wires--"
" --Yes. The outer vinyl coating. That's correct."
" -What are the 3 wires that you got in there?"
" -Well, we have a ground wire. There's actually 4. They call it 3-wire but there's actually 4. We have a bare ground wire--"
" --Yes."
" --a white neutral. I'm gonna use the black wire as our constant feed around the room and the red wire is gonna be our switch receptacle."
" -I see."
" -This is called pig-tailing. The receptacle that we're gonna end up putting here only has 1 screw for a ground wire. To keep the ground continuous through the loop we have to slice it together and take off what we call a pigtail and this will actually go to the receptacle. And we do the same for the white. We also have to pigtail where, this is a switched receptacle, we have to pigtail the black wire and the red. What we'll do is we'll break a tab on the receptacle which will isolate the top receptacle from the bottom half and the red will control the top half from the switch and the black will be constantly hot. The red wire is gonna switch the top half of the receptacle. Now we tuck the wires in nice and tight so when they put the sheet rock on and cut out the box it will nip the wires. Ok now what we have left here is we have the neutral, the ground, the constant feed and the switch from the top of the receptacle."
" -Great."