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-   -   Can I make this electrical setup work? (http://www.diychatroom.com/f18/can-i-make-electrical-setup-work-162576/)

gte 11-08-2012 10:02 AM

Can I make this electrical setup work?
 
Hello,

I made a mistake and forgot to put a feed to switch 1, before I drywalled. I can always run new wiring, but I'm hoping I can avoid that if possible because the drywall is already up.

My question is, is it possible to still use the 3 conductor wire to feed power to switch 1 and then still have the 3 way functionality between switch 1 and switch 2, before feeding power to the 2 conductor wire that goes from switch 2 to the light fixture?


http://img687.imageshack.us/img687/8...aldiagram1.jpg

Jim Port 11-08-2012 10:22 AM

Yes, you will wire SW1 as a dead end 3w. At SW2 box splice the incoming hot to the W from the cable going to SW1. Re-identify this as a hot with black tape or magic marker. Place this on the Common terminal at SW1. Black and red are the travelers at SW1 and SW2. The black going to the fixture connects to the Common on SW2. The white from the fixture splices to the incoming white.

The above procedure is not in compliance with the 2011 NEC requirement for a neutral at the switch locations.

gte 11-08-2012 10:26 AM

Thank you Jim!

I'll try that tonight :)

joed 11-08-2012 10:55 AM

Here is a drawing of what you have.

http://www.selfhelpandmore.com/image...h/3waysame.jpg

gte 11-08-2012 11:23 AM

Thank you so much! I was just trying to draw it up myself :thumbup:

Quote:

Originally Posted by joed (Post 1047341)
Here is a drawing of what you have.

http://www.selfhelpandmore.com/image...h/3waysame.jpg


Jim Port 11-08-2012 12:19 PM

The diagram posted does not agree with the instructions I posted.

gte 11-08-2012 01:14 PM

Hi Jim,

This is the diagram I was working on, does this reflect the instructions you posted properly?


http://img845.imageshack.us/img845/8...aldiagram1.jpg



Quote:

Originally Posted by Jim Port (Post 1047386)
The diagram posted does not agree with the instructions I posted.


Jim Port 11-08-2012 01:18 PM

You got it. Nice diagram. :thumbsup:

gte 11-08-2012 03:34 PM

Thanks, good instructions make a good diagram :)

I have my head completely wrapped around it now, the switches are just SPDT relays :thumbup: .

You feed the input of the first SPDT relay (switch 1) with power and then you connect both outputs of the first SPDT relay to the outputs of the second SPDT relay (switch 2) and then connection the input of the second SPDT relay (which is actually technically an output) to the light fixture. You also wire nut the neutral from the fixture right to the wire that goes to the panel inside of the gang box, bypassing all switches.

joed 11-08-2012 08:38 PM

Quote:

Originally Posted by Jim Port (Post 1047386)
The diagram posted does not agree with the instructions I posted.

I did not read your instructions. It does agree with the poster's original line drawing with power and light going to one of the three way switches.

There are no relays involved. They are both switches.

gte 11-13-2012 09:20 AM

Hello,

I was making an analogy with the relay comment, not a definement.

Anyway, this worked well and is functioning as of Friday. Thank you Jim.

Jim Port 11-13-2012 10:38 AM

You are welcome. :thumbsup:

langless28 11-13-2012 11:30 AM

as per the 2011 NEC, doesn't a neutral have to be at every switch location?

gte 11-13-2012 11:35 AM

It seems as if no one is reading the whole thread :(



Quote:

Originally Posted by Jim Port (Post 1047324)
The above procedure is not in compliance with the 2011 NEC requirement for a neutral at the switch locations.

Quote:

Originally Posted by langless28 (Post 1051268)
as per the 2011 NEC, doesn't a neutral have to be at every switch location?


Quote:

Originally Posted by gte (Post 1047526)
I have my head completely wrapped around it now, the switches are just SPDT relays :thumbup: .

You feed the input of the first SPDT relay (switch 1) with power and then you connect both outputs of the first SPDT relay to the outputs of the second SPDT relay (switch 2) and then connection the input of the second SPDT relay (which is actually technically an output) to the light fixture.

Quote:

Originally Posted by joed (Post 1047775)
I did not read your instructions. It does agree with the poster's original line drawing with power and light going to one of the three way switches.

There are no relays involved. They are both switches.


langless28 11-13-2012 11:45 AM

yeah i missed the neutral part, because of the ads on this site being in some posts, my eyes tend to skip stuff towards the end.


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