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Dimmer to operate a single CREE LR6 LED fixtur

All I've found are dimmers that require 4 LR6 fixtures to operate properly. Probably because the LR6 only draws 12 watts.

We need to dim single LR6 fixtures. Perhaps you can recommend one.

Thanks for your help,

George Stilwell

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  • grsjr Nov 13, 2008

    Not a fan, but I couldn't find a category for lighting fixture dimmers

  • Anonymous Jan 24, 2009

    What criteria should I be looking for when selecting a dimmer for the LR6.

    The dimmers that are recomended do not seem to have any special features. What should I be looking for?

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Simply Automated Dimmers drive standard AC loads as low as 1 watt. The work GREAT for CREE LED fixtures.

Posted on May 13, 2010

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Lutron dimmer switch # D1500 1500 120vac Voltage to switch is OK but lights(8 100watts) do not go on.


I can't locate the Lutron D1500 dimmer switch on Lutron web site. Perhaps there is a different number for it.

Anyway, you are attempting to dim a total of 800 watts of light. A standard dimmer switch will not handle this much of a load as they are rated for 600 watts. A 1000 dimmer is the next size up and would be the minimum rating to be used. This means the dimmer would be operating at 80% of capacity and the switch may become warm - but all within acceptable limits.

A dimmer switch rated at 1200 watts or even 1500 watts may be a better choice, as the 800 watt load would present a load that would only be 66% and 53% (respectively) of rated capacity, and would likely run cooler and last a lot longer.

The down side to these higher wattage rated switches is their cost. It is not unusual for the price to double for a 600w vs a 1000w dimmer.

Sometimes, a 1000w dimmer is not sufficient to control a 600w load. This happens when 2 or more dimmer switches are installed in a single location under one wall plate. It is a fairly common arrangement for electricians to install 2, 3 or more "ganged boxes" so that there aren't 2, 3 or more individual switches clustered around a doorway. Even though a two ganged box has twice the area of a one gang box, the issue is about heat dissipation. A box will contain the heat. So the heat is given up from the front of the switch. The metal fins provide more area for cooling. When two or more dimmers are located in a multiple-ganged box, there is too much heat for the space. Two 600 watt dimmers would need to be derated to about 450 watts each (instructions for derating are included with the switch - each manufacturer has their own formulas), and if three 600 watt dimmers were in a single location, they might need to be derated to 300 watts each. So, simply moving to a 1000 watt or 1200 watt dimmer may not get you to the 600 watt level if there are several dimmers that require derating to 50%. Installing dimmers in boxes with standard "toggle" type (non-dimming) switches require no derating as toggle switches do not produce appreciable heat.

Make sure that the lighting load is a type designed for dimming. The popular CFL (compact fluorescent lamps) are not designed for dimming, unless the package specifically states otherwise. Lights that have a filiment but no transformer, ballast, starter, etc. are the only ones suitable for use with a dimmer (again - unless the package / fixture states otherwise). The dimmable types are typically "standard" incandescent, quartz, halogen and tungsten types.

Furthermore, a dimmer switch is not suitable for use as a fan speed control either. There are special switches to provide speed control of fan motors. Use of a dimmer on a motor load is a fire hazard.

I hope this helps & good luck!

Jan 08, 2013 | Lutron Electrical Supplies

Tip

How to upgrade the under cabinet lighting in your kitchen.


Hello. Here is a great weekend project that anyone can succeed with. Under cabinet lighting is such an enhancement to the function and cheerfulness of your kitchen. My most recent experience with this was very successful. The kitchen really needed the extra light and, the home owner let me choose the fixtures. I selected Utilitech line Voltage Xenon Lights from Lowes. These units come in three lengths, 12", 18" and 24". They can operate alone or in groups, they use 110 volts and no transformers, and they have a high/lo/off dimmer switch built in. Finally, they can be installed using the enclosed plug-in cords, or direct wired, and you can link up to 600 watts. A twelve inch bar is 40 watts.

All of that said, all you need to proceed is about 45 minutes per cabinet, and the following tools: electric drill and a set of wood flat drill bits, flat head screwdriver, philips screwdriver, wire cutters, wire strippers, pliers, safety glasses and a small mirror. The mirror will assist you in tightening the screws as you install the fixtures under the cabinets. Turn off the power at the breaker for the circuit you are working on [unless of course you are going to use the plug in cords included in the box instead of direct wiring].

VERY USEFUL TIP: probably the most difficult part of this task could be mounting each of the light bars uniformly under the cabinets. Recognizing this, I made a template for each of the three lengths of fixture so that I knew exactly where to predrill and start the two mounting screws required per fixture. These templates were made from still cardboard, cut with a razor blade knife, although you could have used 1/4 inch plywood just as well.

on Dec 07, 2009 | Electrical Supplies

1 Answer

I remodeled my kitchen and replaced my leviton dimmer switch with another brand. After installation I turned the light fixture on. Only one of the three lights of the single fixture turned on for...


Hi Leonard,

I'm a licensed electrician and will be happy to help you get this working again. I suspect an incorrectly wired or incompatible switch or a load that is not designed for dimming. To know which one(s) is the problem and to be able to provide a solution, I need a little more information.

1) What was the old switch brand and model number?
2) What is the new Leviton switch's model number?
3) What type of light bulbs are you trying to operate in the 3 fixtures?
4) What is the number of and wattage of each lamp in the fixtures?
5) How many switches operate the lights?
5a) If more than one switch is used, what is the brand and model number of the other switch(es)?

Thanks

Oct 05, 2012 | Electrical Supplies

1 Answer

We have a lutron nova 2003p (1600 watt) switch supplying power to a line of 18 12 volt, 50 watt lamps. switch went out. is this caused by over-amperage draw?


Hi John, I'm an electrician and I think I can help you with this problem.

First and foremost, this switch's 2000VA / 1600W electrical rating is based on a incandescent load.

Let's do do the math on this one.. 18 x 50 = 900 watts. So, you're under the 1600 watt capacity, but I think this is a bit more involved than this.

I'd be willing to bet that you're not dimming a 12 volt circuit - but rather a 120 volt circuit that supplies one or more transformers that step the power down from 120 volts to the the 12 volt bulb voltage. A transformer is an inductive load. A transformer's inductive load is completely different than the incandescent load the dimmer is designed to control. The transformers are rated for 120 volts and will have issues including heat problems if provided less than the rated input voltage to provide a reduced output voltage you want so that you can dim these lights.

This switch will not work on the output of the transformer in this situation either because the significant amperage being switched here. Each of these lamps draws a bit over 4 amps as determined by ohm's law: 50W / 12V = 4.16A. The total load at 12 volts is (again, Ohm's law) 18 x 4.16A = 74.88A ! That means the wire would need to be a #4 or #2. This is about the size of the cable on your car's battery (only amperage determines conductor size - voltage determines insulation).

A dimmer on this circuit will not work unless the fixtures are changed so that no transformers are used to supply the lamps. This includes fluorescent lamps (compact or otherwise) unless the packaging specifically states that they can be used on a dimmer.

You may wish to contact Lutron Hotline at 800-523-9466 for additional help and suggestions. I hope this helps & good luck!

Mar 29, 2012 | Lutron Electrical Supplies

1 Answer

I changed the light bulbs in the fixture it controls, now it does not work. What is wrong?


This switch is designed to dim incandescent lamps. It has nothing in its description about being used with CFL (compact fluorescent lamps) types. If you are attempting to dim standard CFL types, it will not work.

CFL's are available in both dim-able and standard types. As you may have guessed, only those marked as "dim-able" will work with a dimmer switch. Dim-able CFLs cost slightly more than standard CFLs but may be controlled by any switch. Dimmer switches may only control incandescent and other type lamps that specifically state they are compatible with dimmer switches.

If you are attempting to dim incandescent lamps, make sure that you are not trying to dim lamps with a total wattage greater than the dimmer can handle. Most dimmer switches are rated for 600 watts, if you have two dimmer switches under one wall plate, the wattage rating drops to about 500 watts. This de-rating is because of the heat the switches create. There are dimmer switches that can dim more than 600 watts, but the price skyrockets for a 1000 watt dimmer, and keeps climbing.

If your wattage is within the limits of the dimmer, check the bulbs. If they are ok, the dimmer may have failed and require replacement.

If you found my reply helpful, please rate it "4 thumbs up". Good luck & thanks!

Aug 16, 2011 | GE 18027 Dimmer Toggle OnOff with Slide...

1 Answer

I have a dimmer switch that is backlit. The switch itself is flickering - havent noticed this before. The lights still work and the dimmer on the side of it works also. Should I be concerned


Hello.
Had this problem my self a while back, here's what I found out. Firstly, it may simply be the switch is faulty. If this was a new install, take it back and try another. But before that, get all relevant information about the lights you are dimming. Here's why: Some light fixtures are incompatible with dimmers. They may dim - but not properly. Some lights/fixtures require specific dimmers to be used: incandescent or not, total wattage in fixture, and so on. Having this information may save you a trip if it's actually not the switch. Good luck.

Mar 06, 2011 | Leviton Decora Light Dimmer Switch

1 Answer

I have a new chandelier with 9 12 volt halogen bulbs. I want to install an electronic dimmer switch for it. When purchasing the dimmer switch there are 4 wires included: ground, black, white and neutral....


First you must have a neutral wire in the switch box for this dimmer to work. A neutral wire (white) is a current carrying conductor. A ground wire is an equipment ground and does not normally carry current. You should never connect a device that requires a neutral to a grounding conductor.
The neutral wouldn't have to come from the light fixture as long as it's on the same circuit. Another note is to check your light fixture, and be sure dimming is ok. Another choice you could have is to install a remote dimming device. You would mount this in the fixture canopy, and then use a remote dimmer.

Aug 03, 2010 | Electrical Supplies

1 Answer

Replacing ceiling fixture but wall switch not working


You an probably get all the info you need here: http://www.dimmers.net/maestro.asp

Jul 06, 2009 | Lutron Maestro 600-Watt Multi-location...

2 Answers

Lutron Dimmer Not Dimming But On/Off Works


What is the dimmer rated for? Your load on the track appears to be 200 watts. A standard dimmer will burn out, you need to look on the dimmer to see what it is rated for. Did it run hot with the dimmer before you had this problem? They make dimmers for higher wattage that will do the job for you.

Feb 05, 2009 | Lutron ELECTRONICS S-1000H-LA SKYLARK...

1 Answer

Have a Lutron Skylark SF-10P need to wire to existing 3 wires


You have to have a special ballast on the light to dim fluorescent light fixtures. You also have to have a special dimmer.

Nov 28, 2008 | AMS Lutron SFSQ-LF Skylark Slide-to-Off...

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