Are you sure your LED draw is 75 watts??? Most put out the lumens of a 75 watt incandescent light, but draw probably 18 watts.

 

I am not sure, that was not clear to me whether it meant 75W LED or 75W "equivalent" incandescent.

It says "Dimming load works with 75W LED bulbs or 300W incandescent/halogen bulbs; on/off switching load works with all bulb types or up to 2.5A fans" so does it mean I can put that one a fixture that is less than total of 300W equivalent incandescent light, for example, a bath vanity light of say 4 incandescent bulbs of 60W each = 240W total would be under the limit of 300W, but for LED, two bulbs of 100W equivalent is OK? I got confused with the "75W LED" wording.

 

What you linked to is a dimmer with top ON and bottom OFF switches, NOT a dual switch. The only one I see that has two controls is for a dimmer and timer.

Lutron Maestro LED+ Dual Dimmer and Timer Switch, 75-Watt LED Bulbs/2.5 Amp Fans, Single-Pole, White (MACL-L3T251-WH) MACL-L3T251-WH - The Home Depot

The Maestro LED+ dual dimmer and timer is a combination control that features a stacked design to control more than 1-light or fan from a single location. Adjust the lighting level of 1-light source with

www.homedepot.com

But, back to the question you had, if you had 75 watts of LED that would be a large lamp conglomeration since most are 11 watts or so. Meaning you could have 6 lamps at 11 watts and not exceed the switch.

60 watts LED equivalent is 8 watts
75 watts LED equivalent is 11 watts
90 watts LED equivalent is 15 watts

 

(1) I need both lights to be dimmable, and fit into the space of one device.

The one you linked to is just a dimmer on one switch and on/off on the other. There are not two dimmers on that unit. Lutron doesn't make a stacked dimmer. They say it is due to space requirements for the needed circuitry.

 

I am looking for a singe device to control two light fixtures (same circuit).

I have two requirements:

(1) I need both lights to be dimmable, and fit into the space of one device. I don't need it to be smart, and I do have a neutral in the box if that matters. I found this switch that seems to be able to do this, which is the Lutron MACL-L3S25H-WH:



Maestro LED+ Dual Dimmer and Switch, 75-Watt LED Bulbs/2.5 Amp Fans, Single-Pole, White (MACL-L3S25H-WH)

However, it says it can "dims 75-watt LED bulbs". The problem is, one of the fixture is a two lite fixture and each lit can accept up to 100W so total 200W. I wonder what does the 75W LED limit means, does it mean it may not dim correctly and using a higher watt bulb will result in less than optimum dimming, or will it actually overheat?

While you have been advised that the device concerned is a Dimmer plus a Switch - and NOT two Dimmers -
It is virtually certain that "dims 75 Watt LED bulbs" means just that,
since it could also dim 300 W Incandescent lamps.

While the Light "fixture" you are using could accept up to 200W in total,
that could only be achieved with incandescent lamps,
since LED Lamps of that "capacity" are unlikely to "fit".

Unfortunately, the advertising of LED Lamps in both North America (and the UK)
tends focus on "Incandescent Equivalent" specifications
and not Lumens.
Since LEDs are usually about 90% more efficient than Incandescent lamps,
a modern "100 W Equivalent" LED is likely to draw about only 10 W and still produce about 1350 lumens!

(2) The second requirement is that I need the switches to be vertically stacked. In other words, it needs to be a top switch/dimmer and bottom switch/dimmer and not a left/right configuration like the Legrand LSCLDC163PW Pass & Seymour Dual Slide Fan Control and Dimmer below. This is because the two fixtures are arranged such that one is higher one is lower.

Your second "preference" is largely subjective - on your part.
It is probable that you could replace the current "Wall Box" with a double sized "Wall Box"
and install two dimmers - "Side by Side".

If you really require the dimmers to be above/blow each other,
you could install a second single "Wall Box" in the required position.

 

Your second "preference" is largely subjective - on your part.
It is probable that you could replace the current "Wall Box" with a double sized "Wall Box"
and install two dimmers - "Side by Side".

If you really require the dimmers to be above/blow each other,
you could install a second single "Wall Box" in the required position.

I know it is subjective, but this is the way I prefer it as all other switches I have has always been done in this manner. That by looking at the way the switches are arranged one can guess which switch operates which fixture by their relative location on the multi gang box. So if I have a bath sconce with a top lite and a bottom lite, it is always a top/bottom double rocker, but if it's three ceiling fans in a larger living room, it will be three fan/light switches in a left/center/right arrangement the same way the ceiling fans are arranged.

The problem I have is the present wall box is already a 2 gang 2 device metal box. One switch is controlling a ceiling fan with light, and the other is the vertically stacked switches/dimmers I wish to get but having a hard time finding. I found the left/right version but that would just drive me crazy with the top/bottom fixtures.

I don't want to add a new 1G wall box on top or bottom of the present 2G box. One solution I can think of is to use the left/right dual switch dimmer from P&S but mount the switch rotated 90 degrees so they can visually be top/bottom, but to do that presents two problems, one is I need to cut out the metal mud ring so I can rotate the way it's mounted on the 4X4 square box, repatch and paint. Second is the current ceiling fan/light switch would also have to be mounted sideways and that switch when mounted sideways would look odd. I'll keep searching for a top/bottom stacked dual dimmer switch may be there is one out there I haven't come across yet.

 

OK I found one but it's for incandescent fixtures.

The Lutron Model #MA-L3L3.

https://www.lowes.com/pd/Lutron-Maestro-Single-Pole-White-Touch-Light-Dimmer/50401290

It appears to be an older Maestro switch, dual switch, stacked vertically, dual dimming, BUT it no longer seems to be listed on Lutron's web site but still listed on other web sites where half of them showed as "discontinued" or "out of stock" so this may have been something that Lutron no longer makes, I thought there should be one for LED but couldn't find it.

This obvious mean they are able to fit two dimming controls into the space of one switch even for 300W incandescent and halogen, they could make one for LEDs. What may have happened is they tried to make them "smart" and that requires more room but in my case I don't want or need smart switches.

The issue is even if I find one of these it most likely won't dim the LED fixture correctly. The search continues.

 

How about installing a triple box?

 

This is not a space or box fill issue but a switch "arrangement" issue.

So having a 3G box with an additional space does not solve my problem. I can buy a dual dimmer switch today (the one made by P&S) and it will functionally do the job just that I don't want a left/right switch to control a set of top/bottom fixtures. The easiest way to visualize it is if you have say a bathroom sconce and it has two bulbs, a top bulb for regular light and a bottom bulb for night light, the way I would do it is I want independently to control the top and bottom, but I want a single device switch with two buttons, one on top to control the top light, one at the bottom to control the bottom light, I do not want one switch with a left button and a right button, nor do I want two switches one on the left and one on the right. The mistake I made was when I was doing the electrical rough in I already considered all this but I wasn't sure I need the dimming and I have a ten pack of top/bottom rocker switches so I used those, thinking if I needed dimming I can always get them later. At the time I googled dual dimmer switches and found many that are stacked vertically...but I didn't know, many of the Lutron ones with two buttons, they are not what they seem, some are fan+light (where the fan button is for motor loads), some are for light+timer, I even found some with two light buttons but turned out its for one single fixture where the top button is to turn on and the bottom button is to turn off, some are wireless switches...

As stated above, the only way a 3G box would work (for me) is to install a 3G box rotated with the long side vertical, so that the two single switches would be top/bottom oriented, but than the other existing switch which is a fan/light combo switch would look out of place rotated. Besides, it is a big job to rework a box as I got 4X4 box with plaster ring and EMT conduits coming into the box so it's not like a switch box with NMB where adjustments are much easier.

 

If the bottom-line criteria are the switches must be stacked vertically - for whatever reason - and both be dimmers, you may be out of luck unless someone can find one. I couldn't.

The Pass & Seymour switch you linked is not a dual dimmer; it is a dimmer + fan control. I have no experience with them but am under the understanding that a fan control won't work as a lamp dimmer.

 

You are right the one I linked is a fan light + fan dual switch. I think they have one that is dual light dimmer that looks the same but I can't find it now, in any event it doesn't work with my vertically stacked arrangement.

It looks like the only one I can find that is designed that way is the Lutron Masteo MA-L3L3 switch which appears to be discontinued but still new old stock can be found in limited supply. However the issue is that it's for incandescent bulbs so if I use LED bulbs the dimming is probably going to be less than optimum.

Lutron Maestro Dual Digital Dimmer Switch, For Incandescent Bulbs Only, 300-Watt/Single-Pole, White (MA-L3L3-WH) MA-L3L3-WH - The Home Depot

Lutron - Maestro 300 Watt Single Pole Dual Dimmer, White - The perfect solution for stacked switches on your wall. Tap on to favorite light level, then tap off. Or, you can simply tap the switch twice

www.homedepot.com

Either that or I stay with the current stacked double rocker switch with no dimming.

 

"Load Correction Device" and "Minimum Load Capacitor"
appear to be different names for the same thing!

A quick Google check indicates that Lutron "Minimum Load Capacitors"
are still available in the US - and Canada.