A lot of these electrical wire thieves think the wire lower on the pole is ground!It isn't!The upper wire is usually ground for lightning protection of the system.And standard voltages of 7200 or 13000 mean you don't even have to touch it before getting charged,it will jump or arc;you can see this at night with cracked insulators or poorly grounded pole hardware.Even if the thief get hold of only the 115 line ,the ampacity of the wire means he will get more amperage and is not protected by a ground-fault-interrupter as one would be in newer construction.
Main power 13,400 will blow the meat off your arm if you are near it.