I recently found out that you have to use a photo cell rated for LED when controlling LED lights. Why would an LED need something different than just a normal photo cell? I thought it was just basically a switch?
Bill, your suppliers are behind the times. Those led photocells have been around for about 2 years or so. We were having so much trouble with the standard ones that we complain bitterly about it. Our suppliers check it out with the manufacturer and they said oh, we have led photocells....I only found this out when I was at the SH asking for a photo cell (control). They asked if I was using it for LED. I suppose they found out from their rep to ask customers wanting a PC. Anyway, the brand that I use now says "LED" on the box. I'm not sure if they are also for incandescent or if they still make ones just for incandescent.
One issue is that the SCR or Triac on the output of a typical photocell unit has a series R-C "snubber" across it to prevent it from false triggering on voltage spikes. This snubber causes a leakage current that could be enough to light up an LED lamp dimly and with possible flickering. The LED compatible photocells might have something like a large resistor to shunt this current to the neutral wire which should be provided as GoldDigger mentioned.I recently found out that you have to use a photo cell rated for LED when controlling LED lights. Why would an LED need something different than just a normal photo cell? I thought it was just basically a switch?
We're talking about photo control switches, unless you're just relating that to them.LED lights have high inrush current (up 70 times of nominal), it could be a real problem for contacts in dimmer (for example). if you check Lutron Maestro dimmers for example, you will see that LED permitted load is less than other types of lighting loads for the same dimmer.
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