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How hard is it to change one light switch to three.

Posted on 10/20/22 at 5:38 am
Posted by mule74
Watersound Beach
Member since Nov 2004
11289 posts
Posted on 10/20/22 at 5:38 am
We are finishing our new house and due to a miscommunication the electrician put all of the lights and fan in the bathrooms on a single switch. What we wanted was three switches on one panel.

This seems like an easy fix no??
This post was edited on 10/20/22 at 5:39 am
Posted by Chris4x4gill2
North Alabama
Member since Nov 2008
3092 posts
Posted on 10/20/22 at 5:54 am to
doubtful he ran separate wires for each back to the switch. He would have ran one set of wire and daisy chained them.
Posted by Boss
Member since Dec 2007
1205 posts
Posted on 10/20/22 at 6:10 am to
If the walls are closed in it is not simple. You ha e to fish new wires to the aeparat fixtures from the existing switch.

I have done this myself before put it required me to cut access points into the sheetrock to grab the wire.
Posted by tenfoe
Member since Jun 2011
6842 posts
Posted on 10/20/22 at 6:49 am to
quote:

This seems like an easy fix no??


Not likely as easy as you think if you have sheetrock up. Just tell your contractor to have the electrician change it. You'll need your sheetrock and paint repaired or touched up at minimum. It won't be exactly easy, but in the grand scheme of building a house in October 2022 it isn't going to be a big expense.
Posted by Blutarsky
112th Congress
Member since Jan 2004
9560 posts
Posted on 10/20/22 at 7:25 am to
It depends on how they are wired.

If he jumpered them all together in the attic, you will just have one set of romex coming down to the switch. You will have to fix that first.

Since the switch is only one, the hard part will be removing the old gangbox and replace it with a 3 switch box.
This post was edited on 10/20/22 at 7:27 am
Posted by RealityTiger
Geismar, LA
Member since Jan 2010
20439 posts
Posted on 10/20/22 at 7:32 am to
quote:

due to a miscommunication the electrician put all of the lights and fan in the bathrooms on a single switch
Miscommunication or not, is the guy a retard?
Posted by LSUtigerME
Walker, LA
Member since Oct 2012
3791 posts
Posted on 10/20/22 at 10:20 am to
We need more info on how the wires are pulled.

Do you have just one wire and one wire out the box? Did he run 14/3 or 12/3 out?

Can you narrow this down to only two switches? If so, you can get a combo switch and won’t have to replace the box. If you start pulling too many wires into a single gang box, you’ll exceed the box fill and make it really difficult to make the connections.

Regardless, if it’s an interior wall with no insulation and the fixtures are easily accessible in the attic, this is an easy fix. Can likely be done even without Sheetrock damage.
Posted by Clames
Member since Oct 2010
16541 posts
Posted on 10/20/22 at 10:49 am to
quote:

This seems like an easy fix no??


Depends on how it is wired at the switch, in most cases this is a relatively easy fix for a good electrician though. I've done this type of change numerous times, it really is just a matter of having the right tools.
Posted by KRS
Member since Jun 2022
265 posts
Posted on 10/20/22 at 12:55 pm to
Youtube has great amount of info on this subject.
Posted by Miketheseventh
Member since Dec 2017
5714 posts
Posted on 10/20/22 at 4:52 pm to
quote:

I've done this type of change numerous times, it really is just a matter of having the right tools.

Absolutely. The hardest part of this job is making sure you drill in the top plate (if your lucky enough that the person that drilled the hole originally drilled it big enough to slide a cable down the same hole)
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