Use Of 12/3 For Two Circuits

We are just beginning to start with our kitchen remodel. Today, I mapped out all the circuits and this is what I found.



Circuit # 7 - 20 amp circuit to 1 back splash outlet then to 3 kitchen wall outlets, then to a closet outlet and closet ceiling light and then to a side  porch light!



Circuit # 8 - 20 amp to Dishwasher and Disposal



Circuit # 9 - 20 amp circuit to microwave and kitchen ceiling lights. 2 patio recessed lights and dining room ceiling light.



Circuit # 12 - 20 amp circuit to another back splash outlet then to 2 dining room wall outlets.



Circuit # 14 - 20 amp to Refrigerator only



Circuit # 18 - 15 amp to GFCI outlet in garage then that feeds 3 outlets for 3 bathroom outlets and 1 outside patio outlet.



I going to have to add 1 more back splash outlet due to increase in counter space. I'll put the microwave on a dedicated circuit. So I need 2 additional breakers but I only have 1 blank spot in the breaker panel. I guess I can add one of those slim tandem breakers.



So my question, is it ok to have additional wall outlets on the same circuit as a back splash outlet?  If it's ok I'll lighten up circuit # 7 by putting some of those wall outlets on the additional back splash outlet.

Oh, I have 2 20 amp circuits I did not get identified yet! I'll get to those tomorrow.



thanks!
      

I have 3 bedrooms on 15 amp circuits, 14 gauge wire. Original wiring is one bedroom is on one circuit and the other 2 bedrooms on another circuit. The wall switches in each switched the top half of an outlet in each room. I converted the wire at the wall switch to a 110V feed from the outlet and ran 14/3 from the switch to the ceiling for a ceiling fan. I replaced the outlets since the jumper was cut to isolate the 2 plug ins for switching. Is this whole scenario code compliant?
      

hi everyone.



i am installing 4" recessed lighting throughout my main floor.  my house was built in the 40's and the previous owner installed drywall over the existing lath and plaster ceiling.  so I've cut a trench down the center of my room to drill floor joists to run wiring and cut my holes for the new lights.

the lights are fire rated and do not require insulated cans for a traditional installation in a drywall ceiling.



question i have is with the additional 1/2 to 3/4" of lath and plaster above the drywall, should these lights now have insulated cans or should i be fine with the cans I've got?  there is no insulation in ceiling.



any suggested would be appreciated.



thanks

d
      

Hey everyone - question about home wiring that was done when the house  was built about 20 years ago (which putting it delicately...is very  shoddy at best).  I'd like to think of myself as fairly knowledgeable in  basic home wiring...but this one has me baffled and I really hope  someone can help.



I am redoing a screened-in porch at the back of our house.  There is  currently a working outlet, and single-pole switch that turns on an  outside bug zapper, and a wire running coming into a second  switch...then leading into nothing in the ceiling (presumably for a  future ceiling fan / light install that was never completed).  I gutted  the entire porch and using one of those audible voltage testers,  discovered the wire than ran into the second switch / ceiling box did  NOT work. 



Not thinking much about it, I tried figuring out how the first switch  (to that outdoor bug zapper) was wired.  Most of the wiring for that  switch and the outlet I mentioned is behind the plywood sheathing of the  house...so it's near impossible to figure out where it goes.  Initially  it LOOKED like the power from the circuit panel came into the outlet  first...and then went out to the bug zapper switch.  (Why did I think  this?  The outlet had a B/W wire coming into it...and another B/W going  out back into the wall somewhere.  Tracing that wire along the basement  foundation best I could...it looked like it went right into the bug  zapper switch).  So wanting to completely eliminate the bug zapper  switch, I disconnected all of the wires that were connected to the  outlet to figure out which set was leading to it.



Here's where I got confused.  When I did this and re-tested voltage at  the outlet, one set of wires was live...and the other set was dead.  And  that makes perfect sense.  Yet the bug zapper switch STILL worked.  OK -  so my conclusion: the power for this bug zapper switch isn't coming  from the outlet.  No problem.  But just because I was near it, I decided  to also check that 2nd switch / ceiling wire combo...and what do you know - it was LIVE!



I got super excited it was working but then super baffled because I  didn't do anything to that ceiling wire at all.  In fact - all I did was  DISconnect 2 sets of wires at a nearby outlet. 



Confused but happy, I was ready to pack it in for the evening and  re-connected the incoming / outgoing wires back to the power outlet.   Flipped the circuit breaker on.  No issues.  BUT - now all of a sudden  the 2nd switch / ceiling wire that magically started working was NO  longer working - just like it hadn't been since I started this whole  process. 



Logic is telling me it's obviously got something to do with the outlet  wiring...since that's the only thing I messed with.  But why would the  ceiling wire all of a sudden become LIVE when the wires going into the  outlet were all disconnected?  It's certainly a first for me.  Can anyone help me figure this mystery out?  Thanks gang!
      

Hello all.  I'm new on the forums and new to electricial.  I bought a house recently and found some outdoor outlets that don't work.  Only one does.  I've searched the forums and found some troubleshooting steps such as reset all the GFI outlets in house, but that didn't resolve the issue.  None of the outdoor outlets are GFI (they don't have a button).  I only have one circuit breaker and I've looked around and didn't find a second one.  None of the circuit breakers are label for the outdoor outlets and they are all in the "on" position.  All the indoor outlets work fine.  What other troubleshooting steps can I do before forking out $$ for an electrician?  Thanks!
      

This is kind of a complicated question, but I  think I have figured out how to do it right.  I wanted to run it by some folks here before going to the city code enforcer.  See the attached diagrams for details.



I  am planning a fairly elaborate lighting scheme for my home theater  area, mostly because I plan for the theater automation to be a hobby for  me. (I'm an electrical engineer)

 

I want to have banks of lights that I could later choose to group  differently onto dimmer switches.  For example, I have six can lights.   Some people I have talked to think I should dim the front four together  and back two separately.  Some think I should dim the front two together  and back four separately.  Some say I should dim them all together. 



So I decided I'd run each group of two cans to a junction box, run  the switches to a junction box, and then wire the switches to the lights  in the junction box - then I could later change it if I decided it should work  differently.  In addition, this would keep the junction boxes the  dimmers were in free from extra wires, since I plan to buy nice dimmers  that are fairly deep and would take more space in the switch boxes.  And  if I find that using switches differently would make it more intuitive,  I can change which switch controls which lights easily after the fact.   This would also allow me later to possibly control the lights with an  automated system.

 

There are some track lights and rope lights, as well as a couple  receptacles that would all come back to the junction box where they'd be  connected to the switches/dimmers.



I am bringing in power from  two circuits to balance the lighting.  I plan to put some of the lights  on one circuit and some on the other.  The second circuit has some other  stuff on it already, so it has less load left over, so most stuff will  go on the first circuit.

 

Also to save on wiring and make running wire easier, I was planning  to use 14/3 wiring where possible.  Any given 14/3 wire would  always be connected to only one of the circuits (no shared neutrals).



The attached files show my exact plan for each circuit. Note they both  share the junction box in the upper right corner of the pictures, they  also share the switch banks.  This allows me to decide which switches  control which lights, as well as decide which lights will be powered on  which circuit to balance them properly.  Note that the track lights are  each 2 circuit track, that's why I'm running 14/3 to each.

   

See the attached files for circuit #1 and circuit #2



I am running 14/3 NM to the switches.  I was planning to have two  switches share one 14/3 cable.  I am also running 14/3 to each group of  two light groups that I want to control separately.



I've also attached a diagram from the perspective of the junction box.



I also attached an example circuit on how I plan to use the 14/3 wire.

   

Here are some other decisions I made:



- The junction box will  be PVC 8x8x4 (256 cu. in.)  All the wires coming into the box add up to  70 cu in. so the box should be plenty large.

- All the grounds from both circuits will be tied together

  - The neutrals for both circuits will always be kept completely separate (NO shared neutrals)

- No 14/3 wire will ever carry power from more than one circuit (this would violate the shared neutrals anyway)



Even  though this is kind of elaborate and for hobby, I want to be sure to do  it safely and up to code.  Does anyone see anything wrong with  my plan?

 

Thanks,



Daniel
      

I have 2" grey pvc conduit running from my basement underneath a patio and terminating vertically from the ground a few feet past the edge of the patio (in the dirt).  I want to install an outlet on the stone wall at the edge of this patio.  I do not know how to properly return the wire from that open 2" vertical conduit back to the wall a few feet away.  I assume I need a junction box on the existing conduit, but can't find one with a 2" inlet.  I would like to keep the connections buried if possible, return with a smaller conduit to the wall and up to a mounted outlet box (weatherproof).  Any suggestions about how to manage the conduit connections from the vertical pipe?



Tom
      

Hi,



I would like to wire a switch to be able to cut the power to the ceiling mounted outlets that feed our garage door openers. Running new wiring to them will be a bit cumbersome, so I am hoping to avoid that. The ceiling outlets are powered by light fixtures in the garage (one near by each outlet). There is a 3 wire romex cable running from the light switch to the first light and another one between the lights, and then regular 2 wire romex cables from the light fixtures to the outlets. The red wires in the 3 wire cables to the lights are switchable, the black wires are always hot.



I mainly want to be able to cut the power to the doors when we are away on vacation, and the reason for that is that one night both doors somehow opened up - I have no idea why. I'd hate for that to happen when we're away. Unplugging and plugging in the openers is a bit of a hassle due to the high ceiling.



I thought about wiring in a switched outlet so that I could just reach up with a long handle of some sort and switch off the power to the outlet. It would not be ideal, but definitely easier than getting the ladder out and unplugging the door openers.  However, there is possibly another option that I'd like some input on if anyone cares to comment. I believe I could wire in a switch on the wall next to the light switch that would allow me to cut the power to the black wires in the 3 wire cables. This would cut the power to the ceiling outlets and anything downstream from there (possibly an outside light, I would need to check on that).



My question is, are there any potential issues with this sort of wiring? Is there perhaps any code violation if both hot wires in a 3 wire cable can be switched off separately?



Thoughts?
      

I am redoing my basement, and i am making the electrical runs for the recessed lights in the ceiling. I am using 14 gauge wire, and i have 16 recessed lights with 65 watt bulbs in them, however they are rated at 75 watts max. assuming someone after us may put in the max bulb, the total watts would be 1200, equaling 10 amps. When all of the new wiring is done, i am going to have an electrician connect the circuits to the circuit breaker (using 15 amp breakers) however since i am not comfortable doing this myself, and i would like to use the lights now, can i connect them to the existing 12 gauge wire (this will not overload the breaker... i already checked what else was plugged in to the electrical outlets).



to recap:

The power draw will only be 10 amps at MAX. capacity

existing wiring is 12 gauge/ 20 amp breaker

electrician WILL connect 14 gauge wire to breaker using 15 amp breaker



*THIS WILL BE TEMPORARY*
      

Can you install 6 recessed light off of one circuit by starting at a switch that is designed to turn an outlet on and off for a lamp that sits on a table.  i've determined all of the outlets in one room are on the same circuit.  The max wattage that will be used in that room if all recessed lights and TV etc are on would be approx. 1,500.  the electrical wire in place is 14 g.