So today I was putting up my Christmas lights outside, and I noticed that the strings of lights have 3 interwoven strands. What is the 3rd strand for? There is no grounding prong on the plug, so it can’t be for grounding it…
So today I was putting up my Christmas lights outside, and I noticed that the strings of lights have 3 interwoven strands. What is the 3rd strand for? There is no grounding prong on the plug, so it can’t be for grounding it…