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I'm fishing for ideas - lightening protection

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sibeen:
Another company you can look at is Transector which concentrates on Silicon Avalanche style suppression.

https://www.transtector.com/

Now, I'm going to be pedantic. The word is lightning. Lightening has a completely different meaning,

tkamiya:
That's my typing accent!

tkamiya:
OK, folks.  Thanks for the education.

I still have issues with practical implementation in my environment. 

Currently, my thinking goes something like this.  Move cable modem to side of the house near service entrance.  That will provide low impedance ground, and access to main circuit breaker panel.  (that alone solves grounding issue) 

Use Polyphaser (I trust the company and its products) CATV filter outside and make direct connection to the main ground.  Cable enters the house there.  There is also a sub panel.   Add a circuit breaker and a whole house surge protector (MOV included) to feed the modem, and fiber optic network converter.  From there, my network feed to switches is fiber optic only.

That's a lot of work for a stupid internet connection!  But I have a lot to lose. 

Somehow; though, if possible, I'd like to eliminate adding a circuit breaker.  Maybe use one of the existing branch circuit and put a GOOD surge protection there to prevent back feeding of what gets through coax protection?

ejeffrey:

--- Quote from: MarkF on June 17, 2020, 12:09:59 am ---
The goal is that you want to eliminated voltage differences inside by a lighting strike.  If you have multiple outside ground rods, a lighting strike will create a voltage potential between them which will come inside and create a potential between systems inside.

--- End quote ---

Note that multiple ground rods can refer to  two separate things.  In the US you often need two ground rods but they are connected to the main panel in parallel and does not cause this problem.  What you generally aren't supposed to do is add ground rods at subpanels which could allow ground potential differences and a large current flowing through the ground conductor.

tkamiya:
Right.  There is a strict rule about that.

I have a few ground rods and they are daisy chained.  Strictly speaking, this is not quite right.  They need to be in star configuration.  I couldn't do it any other way.

I've heard of recent change in NEC where when A/C condenser unit is concerned, the ground can now be right near the unit.  I have to read up on it first.  Seem silly to me as my first opinion.

I'm really waiting for copper to residence setup to become available in my area.

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