COMMUNITY FORUM

camdvm

06:16PM | 09/07/08
Member Since: 10/17/05
21 lifetime posts
Bvelectrical
Hi there

I'm having a problem wiring a 24 hr LCD programmable timer switch. I can't find a contact number/help line for the manufacturer...

The SWITCH has 4 wires. Green - ground; Black - Hot line in; Blue - "Black wire to the load"; and White - neutral.

I took the old switch out which is on a 14/2 15A 120V breaker, and controlls 3 outdoor lights. To my surprise, the switch for these 3 lights had a black wire attached to the bottom terminal, and a white wire attached to the top. That's it, nothing else could be seen leaving the box.

I've tried every combination to wire this timer switch it - it doesn't work. The only thing I can think out is the two of the wires on the switch must hook up to one of the wires (black or white) that were initially controlling the circuit on the old switch...

Do you have any ideas? Thanks so much.

TimBonham

10:15AM | 09/09/08
Member Since: 01/09/07
197 lifetime posts
What you have there is a 'switch leg' circuit. Power from the main box goes to the light (one of them), and then the hot wire runes down the black wire of a cable to the old switch, and (when the switch is on) back up the white wire to the light(s). See http://www.electrical-online.com/basiclightswitchwiringvariation1.htm for an example.

If you new switch requires power directly to it, you will need to change the wiring around and run another cable with power direct from the main breaker box to the location of that switch.

camdvm

05:11PM | 09/09/08
Member Since: 10/17/05
21 lifetime posts
Hi - thanks for the reply. Things are starting to make sense...

If you have a look at the wiring diagram jpg image, do you see any way I can make this work with running a new cable to supply power direct from the main breaker?

Thanks,

Cam
8347-wiring_diagram

TimBonham

03:26PM | 09/10/08
Member Since: 01/09/07
197 lifetime posts
You mean withOUT running a new cable from the main breaker box? Sorry, but that is required to make this work.

Actually, you just need power coming into the timer switch box.

You could connect it to another existing outlet or other power source, if that's easier than running a new cable all the way back to the main breaker box. (Watch that you don't overload that circuit, but 3 outdoor lights aren't likely to do that.)

Or you could find whichever one of the 3 lights has the power cable coming into it from the breaker box (probably the one closest to the switch) and run a second cable from that down to the timer switch location, so that you have the power there. That may be easier than running a new cable back to the breaker box.

It all depends on where these boxes are located in your house, and what is easier to get to inside your walls, with the least amount of tearing things up.

You basically need power to come into the timer switch box, so that the timer has power always, to keep time. In the old circuit, only 1 half of the 120V power came into that box, because that was all the switch needed to turn the lights on or off.

LarryG

02:19AM | 09/12/08
Member Since: 07/22/04
530 lifetime posts
it may be easier to exchange that switch for a programable one that doesn't require a neutral wire to make it work.
Click_to_reply_button
Inspiration_banner

INSPIRATION GALLERY



Post a reply as Anonymous

Photo must be in JPG, GIF or PNG format and less than 5MB.

Reply_choose_button

Anonymous

Post_new_button or Login_button
Register

A new backsplash is a great example of a stand-alone cosmetic project that can dramatically transform a space. Fireclay Ti... Filling an underutilized area beneath the stairs is a smart way to save space. Doing so with a stash of wood, however, is ... The Audubon Society inspired wallpaper in this Adirondack-styled entryway will get you in the outdoor mood. Grab your coat... Chalkboard paint opens up endless possibilities for customizing your dresser time and time again. Use chalk to label the c... A fireplace in the bathroom creates the ultimate setting for relaxation. Homeowners often choose electric or gas over wood... Yes, a freestanding garage can become its own tiny house. Artist Michelle de la Vega has all the comforts of a modern resi... There’s nothing like a new set of cabinet hardware to refresh a room. The possibilities are endless: Go modern, rustic, or... A kitchen in a greenhouse—who wouldn't enjoy spending time in this light-filled space? Details that enhance the conservato... Chalkboard paint features prominently in this elegant yet unpretentious headboard design. Add a new message daily to reflec... Twine lanterns add pops of crafty—but sophisticated—flair to any outdoor setting. Wrap glue-soaked twine around a balloon ... The indecisive homeowner need not fret over choosing one (or even two) cabinet colors. The kitchen cabinets in this artist... Incorporate nature into your lighting scheme by securing a dead tree in a concrete mold and draping your pendant lamp from... Simple and striking, a couple of pieces of "lovingly used" furniture creates a special kind of charm. A weathered chair fo... The Infinite Artisan Fire Bowl from Eldorado Outdoor is made from glass-fiber reinforced concrete, and offered in Oak Barr... The vibrant green of Granny Smith apples make a beautifully natural alternative to the traditional evergreen wreath. Brigh...
Follow_banner_a
Newsletter_icon Google_plus Facebook Twitter Pinterest Youtube Rss_icon
 
webapp1