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1. Junior Member
Join Date
Oct 2010
Posts
3

## Electrical question

Help, cannot find answer on internet. I am running 15a 14/2g wire to one light switch from service, from that first switch, I am running 14/3 wire to 2nd switch in order to operate 1 light from 2 sources. I want to add another switch (3rd) to the second switch in order to operate another independent light. Is it possible to tap the 3rd switch into the 2nd switch for a source of electricity? And do I need 3 way switches to do this? How would this be wired if able to do so?
Last edited by sja41; 11-02-2010 at 08:45 PM.

2. ## Re: Electrical question

You would need 14/4 from switch 1 to switch 2 (Hot,Neutral, and 2 travelers). The 14/ only supplies Neutral and the 2 travelers.
Jack

3. ## Re: Electrical question

Originally Posted by sja41
Help, cannot find answer on internet. I am running 15a 14/2g wire to one light switch from service, from that first switch, I am running 14/3 wire to 2nd switch in order to operate 1 light from 2 sources. I want to add another switch (3rd) to the second switch in order to operate another independent light. Is it possible to tap the 3rd switch into the 2nd switch for a source of electricity? And do I need 3 way switches to do this? How would this be wired if able to do so?
Another way using 14/2 and 14/3 ---- depending on location of the fixutres.

If you run 14/2 up to light one from the service --- from there run 14/2 either to switch one or switch two --- run 14/3 between switch one and switch two which will be 3 way switches.

The 14/2 at light one from the service feed will have a 14/2 hot and neutral extended to light two --- run a 14/2 down to switch 3 ( single pole ).

Hopefully this makes sense and helps.

4. Junior Member
Join Date
Oct 2010
Posts
17

## Re: Electrical question

You should be able to get ***** off the common screw termenal of the three way switch(2),pig tail to single pole switch, then 14/2 from (3rd) to light(2).

5. ## Re: Electrical question

Originally Posted by tomn 10
You should be able to get ***** off the common screw termenal of the three way switch(2),pig tail to single pole switch, then 14/2 from (3rd) to light(2).
Wrong, the only time the common screw on switch(2) has p-o-w-e-r is when the light is on, there is no p-o-w-e-r there when the light is off.
Jack

6. ## Re: Electrical question

Originally Posted by tomn 10
You should be able to get ***** off the common screw termenal of the three way switch(2),pig tail to single pole switch, then 14/2 from (3rd) to light(2).

Referring to the attached schematic of 3 way switch configuration you see they are in a master / slave arrangement.

What you suggest can be done , however , it needs to be switch specific.

. If they are located side by side in the same gang box – then yes -- piece of cake.

Otherwise , if the master switch and 3rd ( single pole ) switch are located some distance apart then it’s more work and cable to run with your suggestion.

The other thing to consider is the size of j-boxes used to accommodate the number of conductors and preventing overstuffing the boxes.
In my experience many DIY’ers walk into their home supply store – pick the standard size of the shelf and way they go --- with little regard of sizing.

That’s one reason for the suggestion I made.

7. Junior Member
Join Date
Oct 2010
Posts
17

## Re: Electrical question

In other word your saying you have to go from the first 3way switch that has the ***** source, and use larger gang boxes?

8. ## Re: Electrical question

The Op stated that he ran ***** from panel to switch (1) then 14/3 to switch (2) that would provide neutral and 2 travelers from switch(1). He then wants to run from switch(2) to a single pole switch(3). The only screw in the circuit that has ***** all the time is the common on switch(1). To get ***** to switch(3) he would need to replace the 14/3 with 14/4 between switch(1) and switch(2) or run a separate 14/2 from switch(1) to switch(3) or follow the path Canuk suggested. At any rate in the OP's wiring description the only screw that is constantly hot is the common screw on switch(1).
Jack