I had an electrician install two hanging pendants over a kitchen island. The install went well and the pendants work fine.
However, after the install I've had an opportunity to look at the fixtures up close, I can't understand what this wire is. The light fixture hangs with a chain and has a typical-sized black cord which I assume is the main power for the pendant. However, there's a copper-colored wire which hangs along down with the chain and the black cord, which doesn't seem normal to me.
Any idea on what this is? I'd like to remove it, but I want to be sure what it is and if it's important first.
And here is a view of the full pendant: