I am adding two kitchen light pendants to an existing electrical box which contains 5 wires: a 2 way switch, 1 single switch, a receptacle, and 2 unknown destinations (see current picture attached). I will be attaching the new 14 gauge wire as follows: ground wire to existing ground bundle, common wire to existing common bundle, hot wire to top switch terminal, and a pigtail from the bottom switch terminal to the hot wire bundle. ( see future diagram highlighted). Is this setup to code? why is the the existing 2 way switch bottom hot wire terminal connected to the bottom terminal of the existing
single switch? Any feedback would be appreciated.
Although in your case there are only two switches.... it's called a three way switch circuit.
So there are three way switches and single pole switches.
I see a two gang box. Where will the third switch go?
Only one type of connection should be used on a device.... both screws terminals or both push-in terminals. It's much easier to connect one wire to the screw and the other to the push-in terminal.... but it's wrong. You need to remove the wire from the push-in and nearby screw terminal and connect together. Add a third wire.... tail.... to go to switch.
Added some corrections.....
Two terminals on new switch.
All three switches have a tail that goes to the splice.
You could make a splice of the three switch hots to a tail and then to the main hot splice.
Word of warning: That box is wiring overloaded. It should be changed to a three gang box.
[color=#282829]I am replacing toilet fan/light: there are 2 existing 12/2 wires going to fan/light and new bathroom unit has two sets of black, white and green wires. There is no green screw at fan fixture. I assume to connect each 12/2 to each set of new unit wires by color? Totaling 6 connections?[/color]
The kitchen light box has 3 single pole switches A, B, and C. Light switches A and B share a live wire and two separate load wires. Switches A and B Lutron Ariadni dimmers and replaced with Lutron Mastro MACL-153. The new switches work fine until you turn on light switch D, a single pole switch located in the living room. This causes a short and the breaker is flipped off. Light switch D Controls the fireplace light. When "living room lights" breaker is turned off, the fireplace lights actually stay on. Light switch D only turns off when the breaker to "living room outlets" is turned off. I replaced light switch D with Lutron MACL-153 and still got a short. When the "living room outlet" breaker is off or light switch d is in the off position light switch A and B work. Any thoughts as to why the Lutron Ariadni dimmer is able to work without any issue and when a new Lutron MACL- 153 dimmer is added light switch D causes a short in on position?
[img]https://cimg4.ibsrv.net/gimg/www.doityourselft.com-vbulletin/1500x2000/lutron_25bb3f29f8f734eba8cb183fde749d9b90a60df2.jpeg[/img]
[i]Lutron Ariadni [/i]