Yes, it will, if configured and maintained properly.
Folks who have tenacious predators, especially bears...or dogs or raccoons or......
Sounds like the wire you have may have been for keeping large livestock
in rather than keeping predators
out.
I don't have predators that warrant hot wire, but I sure have read a lot about it.
There are
many different ways to use hot wire to protect a flock and/or property.
If you are really interested in setting up hot wire on your rented property,
would probably be best to
start a new thread here titled something like "Protecting my Flock with Hot Wire". Post pics of area and existing wires and your coop/run and explain the situation. Not sure how much you'd want to invest on a rented property, especially if you don't plan to be there long term, or if your landlord would even allow it, some things to think about before proceeding.
You could also do some searches here on BYC using the terms '
electric fence', '
hot wire', '
poultry netting'....there ya go, I did the searches for you and linked the results, start reading
Also Howard E is a hot wire guru and has
written extensively, and well, about hot wire setups and function and always seems willing and able to tutor and/or troubleshoot.