Hello! I've installed lighting fixtures before, but recently I purchased a hanging fixture that has a strange set of wires. The hot, the neutral, and, instead of a ground, just a bunch of strands that look like, for lack of a better example, Barbie hair! I took it back to the Home Depot and they didn't know what to make of it, either. All of the other fixtures from this manufacturer were the same. What can you tell me about this?