Running UTP between two locations (like, separate buildings) is extremely hazardous. The ground potential between the buildings/locations can be radically different, the power feeds could be radically different. Difference = potential, potential = voltage.
It's a bad idea any way you slice it. Fiber or wireless is a much better, safer, solution.
There's a good chance you're violating local electrical code as well, if an inspector were to find your setup, you may be liable for a potentially hefty fine (note: soft language due to the wide variety of local code restrictions: more often than not, you end up getting whacked, one way or the other).
Under no circumstances should UTP exit the building without some sort of entry protection, no sh!t, it's dangerous. It should be in properly grounded (large diameter) metal conduit.
Certainly, it's your life, your property, your equipment; you can do it any way you want. If someone catches a charge that sends 'em halfway to Timbuktu, or the building or equipment smokes.....don't shug and claim you didn't know better....step right up to the plate and tell 'em you heard it was dangerous, but decided to ignore the warning.
and, BTW, your insurance company may decide not to cover the losses, since you installed out-of-spec, non-code, unapproved wiring...causing the loss. They are not obligated (in most cases) to pay losses caused by negligent (or illegal) acts.
Jus' so ya know.....
FWIW
Scott