Latest Discussions : Electrical & Lighting

CHECK2PASS

03:52PM | 04/22/04
Member Since: 03/10/03
9 lifetime posts
well to start of i have two switches controlling a light "upstairs downstairs" i upgraded my switches to the new style switches "flat face switch"... before i upgraded everything worked fine, now the switches arnt responding correctly for

example: 'if im downstairs and have the switch off and go upstairs it wont turn on by flipping the switch but, if i have thedownstairs turned on and the go upstairs and i can turn the light off and back on' - 'and if i have the switch off upstairs and come downstairs i cant turn on the light'

i changed switches thinking it might be defective but still have the same problem, does anyone know what the problem i am facing with? hope i made it clear enough...

joed

11:28AM | 04/23/04
Member Since: 09/17/02
524 lifetime posts
Can you put the old switches back and it works fine? Do it and then change only one switch.

The problem is that the common screw is not in the same location on your new switches. Look at the old switch and find the screw that is dark or marked as common. Put the wire from that screw to the terminal maked common on your new switch.

If you have the old switch in one location working properly then you can guess at the common wire for the new switch at the other location. The common is the only one the matters. So after 3 tries you should have the correct one.

CHECK2PASS

03:51PM | 04/23/04
Member Since: 03/10/03
9 lifetime posts
thanks for repling... well i havnt tried changing one switch but i checked the connections with a meter and they appear to be in the correct position

Heres the connections on both switches hopes this would help...

___________

| _______ |

red O| | | |O common

| | | |

| | | |

| | | |

| | | |

grd O| |_____| |O neutral

| |

~~~~~~~~~~~

joed

04:12PM | 04/23/04
Member Since: 09/17/02
524 lifetime posts
They are not in the correct position or the switches would work.

If you can tell me all the cables and wire connections in each switch box and the light fixture I might be able to help you figure it out.

I still think you have the wrong wire on the common screw.

There is no neutral on a 3way switch. It is common and 2 traveller screws.

CHECK2PASS

04:30PM | 04/23/04
Member Since: 03/10/03
9 lifetime posts
i apologized about the neutral wire meant to say traveller.... in each box theres 5 wires 2 are connected which leaves 3 these r old wires which the outside of the wire is colored black, theres one wire on both boxes that has a slight trace of red so i assumed its a traveller, and when i use a meter and touch the wires there one that registers on both boxes wouldnt that be the common wire? also the light fixture i am not sure but i believe it just has a white black and green wire... do u need more info?

doug seibert

03:06AM | 04/27/04
Member Since: 08/10/02
842 lifetime posts
Joed gave you excellent advice(as always).........Reread his post........

For another approach using a meter and helper.......Try:

http://www.wfu.edu/~matthews/misc/switches/confused3way.html


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