We have added a dimmable track lighting that uses 6 dimmable GU10 leds (4.5w) bulbs, that has a 3 prong plug. I was looking to use a Smart Plug-In Dimmer to control them. But I could only find smart plug-in dimmer that only accepted two prong plugs.
I know we use to have older (none-plus) GE Z-Wave plug-in dimmers that would accept a 3 prong plug.
Do they now only make a 2 prong plug for Z-Wave or Zigbee plug-in dimmers?
Edit: looks like I was wrong, see below.
Believe so... Thought it was required by the current NEC electrical codes, but I'm having trouble finding it on a quick search - so could be wrong about that.
Huh. Well whaddya know?
Of course, not UL listed... That may be part of the reason why. 
EVA Logik ZW39 - Where I needed it was a little remote and I found the radio a bit weak so replaced with a GE two prong it otherwise worked fine.
It's ETL certified. Same thing, different organization.
could also use a 3 prong to 2 prong adapter with ground wire (if the lack of ground affects the lights)
Yeah. I see that now.
OH well, whatever. You certainly could not do that with an in-wall receptacle without modifying the configuration (lots of examples of approved modified configuration examples for in-wall receptacles if ya google it), labelling alone is expressly not allowed for dimmer receptacles in NEC code (I did find that section while looking).
But being a plug-in module, I don't know the exact requiremets.
Mine shows UL listed.
Cool.
Guess it is allowed then. I wonder why more manufacturers don't do it then? Seems like a useful adder.
Cost I would guess. Of the lamps I have around the house, whether or not LED, they all have a two prong plug. Guess the research shows that most wouldn't use the grounding prong anyway.
Probably right.
I guessing track light uses 3 prong plug because the open (exposed) rail connection?
If your track lighting uses a transformer, you can't use a Zwave/ZigBee/Caseta dimmer
This is what we have....
https://www.homedepot.com/p/Maximus-5-ft-White-Track-Light-Power-Cord-M-TLA-PC-WHT-5ft/206989277
And the end plugs directly into the track light without any transformer down stream? If the track is 100% AC powered and not DC (transformer) then they should be dimmable. If you already have a two prong ZigBee/Zwave Dimmer available, you can quickly test using a 3 to 2 prong adapter. If it works, then purchase the aforementioned 3 prong plug in dimmer.
Edit : Just realized that you're using LED vs Halogen GU10s. Halogens are very dimmable throughout their range, LED GU10s may either not be dimmable or have a restricted amount of dimmability range. You should test everything before you install!!!
The Gu10 LEDs are dimmable.....
What I have done last night was take a 8 inch extension, 3 prong plug and broke off the ground prong and plugged that into the 2 prong Zigbee plug-in dimmer. I was able do dim all the GU10 LEDs just fine.
The only switch in that room, controls an outlet on the other side of that room.
So what we already did before was install a Homeseer dimmer HS-WD200+ (because of the notification LEDs) as a replacement for that outlet switch. The Homeseer dimmer is not physically connected to any lights, just to that outlet that we do not use.
We added a smart plug-in switch to the track lighting in order to just only turn On and Off the lights, using the Hubitat's Mirror App (Homeseer dimmer --> Track smart switch).
We have the Nyce ceiling motion sensor that really turns the track light on for us 99% of the time. We rarely use the Homeseer dimmer but to pause the motion sensor from turning off the lights if we need to.
We have always just had the track lighting just simply turn on or just off.
But last night I decided to add a smart plug-in dimmer, just to be able to have the ability to dim the lights every now and then if I wanted to.
And for those who might say, "Why didn't you mount the track lighting in the center of the room?"
We actually did, that room is not squared. The blue line and circles represent the Track lights.
Looks like you’re all done! Nice
I use these: Centralite dimmers. They're also Zigbee repeaters and have worked quite well.
Since the dimmer is not double-insulated, you should not remove the ground prong. If something happens (fire, injury) and your insurance company finds out (which they will) they will reject your claim.
Download the Hubitat app
