Here’s why and what it’s possible for you to do about it.
Traditional lights don’t flicker when they are in good condition and plugged into a properly wired electrical system.
If your traditional incandescent Christmas lights are flickering, that indicates there is a problem somewhere in the system.
Individual wires somewhere in the strand might be frayed, and the flicker effect results from the line damage.
As the wind gently moved the wires, it creates an irregular movement reflected in the flickering pattern.
You Have LED Christmas Lights
LED Christmas lights are a slightly different story for an interesting reason.
These LED lights include an inline rectifier to deliver flicker-free LED performance in a package that looks like traditional incandescent mini-bulb Christmas lights.
In the United States the alternating current electrical system feeding your home operates at 60Hz.
It’s also worth noting that it is much more detectable when the individual LED bulbs are clustered together.
Why do some LED strands flicker and some don’t?
Older strands of lights and really cheap newer strands feed your home’s electrical power directly to the lights.
This is why the alternating current frequency is visible to you in the form of flickering.
That lump on the strand contains the rectifier.
