Armacost 60W dimmable transformer (Lutron Maestro CL listed on its compatibility page)
36" of 120 LED/m white tape lights
Maestro CL MACL-153M
I have two such setups (well, the other has about 60" of tape lights in a Y configuration, but otherwise identical). The setup with the Y configuration of lights works exactly as expected. The setup described above lights up as expected, but never seems to fully shut off.
I have reprogrammed the Maestro to set the low light level as low as I can.
When I switch the light off, the lights still remain visibly on at a low, but quite visible level.
My suspicions lean towards:
a) Insufficient ground (my electrical contractors had previously tried and failed to get these switches working in a 3-way configuration with DALS 6" pots.... so the tape lights is me trying to repurpose them) - the contractors ripped the ground off the switch that is not functioning right (the green wire). I had some 14/2 handy so I cut and stripped a conductor of 14 AWG to use as a replacement ground. It's solid wire and I tried to crimp it onto the tab the green ground wire had formerly been attached to. I'm not 100% sure that connection is as good as the original green stranded wire was.
b) A damaged dimmer - it seems feasible to me the electricians, being in a hurry and not taking the time to fully understand the wiring requirements, may have done something that damaged the switch
I do have one unopened (and thus never damaged) Maestro CL 153-M, but if I the issue is more likely to be wiring (particularly the ground - I think all other interconnects were done well), then I'd like to investigate those avenues before I assume the switch is cooked and open the other one.
Any advice appreciated.