I bought a house a few months ago and I'm still trying to figure out all the wiring. I found these coming out of a cabinet in the kitchen.
I think (?) the black one is a cut-off coax cable. There's a LOT of coax in this house, so that seems straightforward (but I would still love if someone can confirm!)
I'm not sure about the other ones. They don't look electric, as I'd expect electric to be black + white + copper, like the rest of the house.
There is supposedly a speaker system in the house (I see speakers) but I haven't figured it out yet. Could that be power for the speakers? I'm not familiar with speaker wire setup. If it's speakers, why would there be so many wires?
Like others have said, it’s speaker wires. That’s not what you’d used for electrical wiring. Nothing wrong with being cautious and checking for voltage with a multimeter, but those are most likely speaker wires.
The reason there are probably so many wires is they may have had a stereo receiver located there for patio audio or something similar with a cable box as one of the inputs on the receiver.
You might look into buying a tone and probe kit if you are having trouble locating the wires. A toner runs an audio tone through the wires and the probe wand has a speaker that helps you hear and follow the sound that runs down the wire.
Nice thing about speaker wires since he says he sees speakers still in the house, is you could just connect an audio source and you'll know exactly where that wire ends.