Calculate watt and pick the right dimmer
Picking a dimmer is neither difficult nor complicated, but you do need to know your bulbs and dimmers, and it helps to remember the basic principles of maths!LED Light dimmer 5000 (4-250W)
When choosing an LED dimmer, you might have noticed that they all come with a watt value. This is often listed as a range, and it typically looks like this:
But what do those numbers mean, and what should you choose? The range should be interpreted as a maximum and minimum—and when your LED bulbs flicker with a dimmer, it’s likely because they’re using a lower brightness than the minimum listed in the range.
The maximum is the highest wattage the dimmer can handle. In other words, the connected bulb—or bulbs—in this example must never exceed 250W. And it should be mentioned that LED bulbs often use more electricity than listed for a few seconds as they turn on. 250W is high for LED bulbs, but don’t forget that your light fixture might be using multiple bulbs.
The minimum is the lowest level of electricity that the bulbs use. In other words, the connected bulb—or bulbs—must never go below the listed minimum. If you buy a 5W bulb and your dimmer has a minimum value of 4W, you can adjust your bulb’s brightness between 4W and 5W. If your LED bulb uses 3.5W, it will flicker.
If your light fixture contains more than one bulb, or if you want to use your dimmer switch for multiple lamps with single light sources, you need to calculate the total wattage.
You do this by taking the number of bulbs in the fixture you want to dim and multiplying it by the wattage. If your lamp contains four bulbs that each use 20W, you need to multiply 20W by 4, which equals 80W. You then take the 80W that the bulbs use all together and multiply it by 1.25 to compensate for the extra electricity used to turn on the bulbs. In this example, you need a dimmer with a max value of 100W.