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View Full Version : How to Wire Two Light Switches With 2 lights with One Power Supply diagram


5150frank2407
Mar 7, 2010, 08:00 AM
I want to wire 1 way switch, 1 dimmer switch with 2 individual lights from one powe source.
Thank, frank

hkstroud
Mar 7, 2010, 08:31 AM
OK. Where is the power coming to, the lights or the switch?

wufwuf
Aug 24, 2010, 03:44 PM
The switches

hkstroud
Aug 24, 2010, 04:03 PM
Is the wiring in place or will you be installing cable?

If wiring is in place connect the white of the incoming power to the two whites going to the lights. Connect two pig tails (a pig tail is a short piece of wire) to the black of the incoming power with a wire nut. Connect the pig tails to the two switches. Connect the black going to one light to one of the switch, Connect the black going to the other light to the other switch.

LSA22222
Oct 16, 2011, 06:29 AM
How to Wire Two Light Switches With 2 lights with One Power Supply diagram

ktchance
Jun 13, 2012, 06:59 AM
What do you do with the grounds?

tkrussell
Jun 13, 2012, 07:20 AM
All grounds are to be spliced together, and there should be a short "pigtail" that connects to any green screw on the switches, and to the outlet box if metal.

ktchance
Jun 13, 2012, 08:26 PM
Perfect. Funny thing, I had already put all grounds together and buttoned up the box, but had not included the pigtails, so I took back apart, fixed it, and re taped the outlets and it is just perfect now.
Thank you

cdnfullmoon
Jul 3, 2012, 07:51 PM
I have the same set-up, but the power is coming into the first light. It is working just fine with the switch. I would like to install a second light, on a second switch and tap into the same power. Can someone please explain (a diagram would be really helpful). Thanks.

hkstroud
Jul 3, 2012, 10:14 PM
..

cdnfullmoon
Jul 4, 2012, 12:04 AM
Thank you, Harold. If I am understanding your drawing correctly (and please forgive me as I am a novice, but willing to learn), then I need to replace the current 14/2 line with a 14/3 line from the powered light to the switch and use the red line to carry the power to the second light as well as pigtailing the grounds for the 2 switches. Is that correct?

I very much appreciate your time in making a clear drawing.

I am renovating parts of my house and the wiring is a bit complex. If you're interested, I can write you a mini-novel about what I've found and the thing I termed "The Everything Switch" (which is what one of these new light switches has taken the space of). My next electrical project will be restoring the power to the front half of my house... I am currently running 6 extension cords!

hkstroud
Jul 4, 2012, 03:40 AM
That is correct. The white of the 3-wire takes power to the switch, the black (or the red) takes power back to one light, The red (or black) takes power to the other, through the first ceiling box. Redesiginate the white to the switch as a hot by coloring each end of it black with a felt tip marker.

I don't show ground wires because they are not part of the circuitry and would make the drawings too messy. I assume every one knows that all grounds get connected together and to all fixtures and metal boxes.

cdnfullmoon
Jul 4, 2012, 06:37 AM
Harold, in my excitement to get my lights back, I think I read your diagram wrong. The power coming in is 2-wire, but then I need to use 3-wire from the light to the switch and jump the power from the red to the second light as well as the second switch. I am going to print that out and take it into the attic with me (when the temps go below the 100s!).

Thanks for your help and patience.

ledergoster
Jul 8, 2012, 02:09 PM
Similar to cdnfullmoon, I have a switch that is end of run that controls outlet power in a bedroom. I want to add a second switch that gets power from the first to power a ceiling fan. I'm not sure that I can easily run a line from the switched outlet to the fan to using the wiring diagram posted by hkstroud.

Any other options?

hkstroud
Jul 9, 2012, 06:29 AM
Sorry but you must get a cable from the outlet to the ceiling or from the switch to the ceiling , no other way.

Larry Hartman
Sep 12, 2012, 01:56 PM
I'm going to have my attic roof fan, & 6 double fluorescent lights in my garage. I am go to install a 20 amp circuit with 12gauge romex out of the panal. What would be the best way to wire them if I want the switchs in the same box beside each other ?
Thank You
Larry Hartman

hkstroud
Sep 12, 2012, 08:04 PM
What is amperage draw of fan?

KPP
Nov 21, 2012, 06:05 AM
OK, but if the power is in as shown in the first drawing and the wiring from the switch to the lights are as the second drawing. How will the connections be then?
A diagram would be most helpful.
Thanks!

hkstroud
Nov 21, 2012, 08:48 AM
To many questions have been tacked on to this thread. I don't understand what your question is. Start a new thread and tell us what you are trying to do.

Click on Electrical and Lighting topic, then click on "Ask a Question about Electrical and Lighting".

hattboytim
Mar 29, 2013, 10:12 AM
I have wiring in place for 2 switches, 2 lights with 1 power source going to one of the lights and a wire going from one light to the other. Each switch has wires going to their own light. How do I connect to have each light working on its own switch?

midgellpe
Aug 27, 2013, 01:13 PM
Per the original diagram answering this question, I plan to wire two light switches, each controlling 1 light, from the one original power supply.

In my case, the original power supply is also switched.

I would like to install a dimmer switch on the original power supply.

The 2 lights at the end of the line are each 5 light chandeliers. There could be 5 - 25 watt halogen lights to be dimmed (if the one chandelier is switched to OFF), or 10-25 watt halogen lights to be dimmed (if both chandeliers are switched to ON).

Is there any problem with installing a dimmer switch in lieu of a standard toggle switch controlling the original power supply?
Thanks.
John on PEI

hkstroud
Aug 27, 2013, 04:12 PM
No problem with the wattage. Are halogen lights dimable? Don't remember ever trying.

ma0641
Aug 27, 2013, 08:33 PM
No problem with the wattage. Are halogen lights dimable? Don't remember ever trying.

Halogens are dimmable with a regular dimmer only if they are 120 volt. With low voltage Halogens you use a touch pad dimmer that works off the transformer .

Antho1965
Oct 18, 2013, 11:48 AM
Ok I have the same problem BUT I want the switches to control lights in different rooms... how do I do this?

hkstroud
Oct 18, 2013, 01:19 PM
Same problem as what?

Bpjap
Feb 22, 2016, 07:38 PM
What do I do if the switches are in 2 separate boxes?

ma0641
Feb 22, 2016, 07:48 PM
What do I do if the switches are in 2 separate boxes?
Please post a new question with details. Piggybacking on a 2 years post won't get much attention.