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TexasRedneck
dmmer and timer on 3 way lighting circuit

Exterior lights are controlled via a 3 way circuit and I wish to have dimming and timer capabilities on the same circuit. I have a programmable timer that works but when I attempt to put a dimmer in the other switch location it will not work as the timer requires the removal of one of the wires (perhaps the traveler) from the 3 way switch.

Any experience and ideas on how to accomplish this? I would appreciate the help.

Re: dmmer and timer on 3 way lighting circuit
TexasRedneck wrote:

Exterior lights are controlled via a 3 way circuit and I wish to have dimming and timer capabilities on the same circuit. I have a programmable timer that works but when I attempt to put a dimmer in the other switch location it will not work as the timer requires the removal of one of the wires (perhaps the traveler) from the 3 way switch.

Any experience and ideas on how to accomplish this? I would appreciate the help.

First Location:
Put the timer on the feed to the the 1st 3w switch. This 3w can also be a 3w switch having a built-in dimmer.
The timer location will require a neutral connection to comply with Code.
The timer requires constant 120V to maintain time, so it must be located before the 1st 3w switch.

Second Location:
The 2nd 3w location can also be the dimmer location. But usually only one dimmer per circuit is allowed, on the least expensive dimmers.

BTW, if the load is a low power CFL or LED be sure the dimmer is designed for it. If the timer does not have a relay output (Triac) it too may not work with CFL's or LED's.

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