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Originally posted by EV607797:

Your solution is to provide adequate primary and secondary protection with a decent amount of inside cable between these devices. Putting them side-by-side really does nothing.
Just to add a bit to what Ed said here. Put a couple 90 degree bends between them too. Lightning likes to travel in a straight line and many times will blow through a 90 degree corner. Another thing I've done (old Telco) is take a piece of 26 gauge and wrap it around a screw driver a dozen times or so and put it between the two protection points. Same theory lightning will just blow it out. One thing about lightning, nothing is 100%.

Retired phone dude