[TowerTalk] Grounding of cables to tower?

[jimlux]

On 10/19/17 9:35 AM, Shawn Donley wrote:
> Jim wrote:
> 
> 
> "In your case, one could put a 1:1 transformer at the remote building,
> primary side fed from the house, secondary side feeding your subpanel,
> where neutral and ground would be connected(because it's an entirely
> separate system). There would be no "ground path" from house to garage."
> 
> 
> I wonder what the breakdown voltage would be between the primary and secondary of such a transformer, and what might happen to it of the tower took a direct strike  (tower bonded to the sub-panel)?
> 

That's the BIL rating of the transformer.

"thousands of volts" is pretty much the minimum.

You'd have a transient suppression (spark gap) on both sides.