I would do as EV suggests and protect at the KSU end first. By doing that you ensure a path of least resistance to ground and you place the entire cable between the house and the out building at the same ground potential.
Forty six years and still fascinated with Telecommunications!
Visit Atcom to get started with your new business VoIP phone system ASAP
Turn up is quick, painless, and can often be done same day.
Let us show you how to do VoIP right, resulting in crystal clear call quality and easy-to-use features that make everyone happy!
Proudly serving Canada from coast to coast.