The only way to stop this is with total isolation.
It sounds like you are using ethernet for the network connections.
NEVER EVER leave a structure ( house ) and go to any other structure and run copper ethernet to anything else.
You want to solve this problem you will need to replace all you outside copper ethernet with fiber otic cables and then install fiber to ethernet converters at each of you end points.
Will cost a lot of money.
I say this with 50 years of industrial experience.
You can run a 2 inch diameter copper wire between every device and drive ground rods till you are bankrupt and it will not solve the problem.
Jim
On Aug 2, 2017, at 3:26 AM, alan.b.pearce@... [jmriusers] <jmriusers@...> wrote:
Below is my track configuration. This is an outdoor layout with fulll Digitrax
electronics. I have all of the Digitrax electronics installed in 4 major metal
enclosures. All of the wires connecting the metal enclosures are connected
via plastic conduit, with many minor connections from the boxes to smaller
boxes connected via conduits.
As a first hit (no pun intended) I would run an earth wire down the inside of the conduit and use it to connect the metal boxes together. Use a heavy gauge wire such as used for connecting house grounds to a grounding stake. This will minimise the possible voltage difference between boxes during lightning strikes, and hence the possibility of damage.
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