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Grounding Question (alien.top)

submitted 11 months ago by [email protected] to c/[email protected]

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I recently had a lighting strike and lost about $1000 worth of equipment. I'd like to reduce the chance of that happening again so I'm looking for advice.

I have a UDM in my house, with a 125 foot run underground in conduit to my barn. In the barn, I have a POE switch that feeds 10 cameras and an Ubiquiti AP. I'd like to add a ground somewhere. I just purchased a surge protector with ethernet for the barn, since the switch is currently plugged in directly to an outlet and should be protected anyway. I also bought this from APC for my equipment in the house. I was going to install that between my UDM and POE switch in the house, then ground it to an outlet.

I'm reading so much information about how to go about this. My barn is powered with 220v from my house, so 4 wires go to the barn H/H/N/G. the ground on the barn is the same ground as the house. If I use both devices can that create a ground loop in the event of a surge? I'm also reading that I can use the APC at any point on my network to provide protection. Is this correct?

Please don't suggest fiber runs, as the cable is already run and I don't plan on redoing it. Thank you all in advance.

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[–] [email protected] 1 points 11 months ago

What high voltage telephone equipment? Telephone hardware is low voltages just like networking voltages. Why would ethernet transceivers be in hardware? Low voltages.

We are now discussing people who invent lies - to sound honest. Ethernet transceivers are required to be some of the most robust. Will withstand 2000 volt transients without damage. Some are even more robust.

We engineers constantly deal with IT people. Who know as much about computer hardware as a taxi cab driver knows about V-8 engines.

How many computers have you designed? Not assembled. Designed by first drawing schematics. My first design was over 45 years ago. Stop trying to claim knowledge. Your examples are disinformation.

Anyone with minimal IT and computer knowledge knows telephones are low voltage. Ethernet ports are among the most robust ports in electronics

Only the most electrically ignorant constantly promote expensive magic boxes. You don't even know that lightning protection is compromised (bypassed) because converter connect to AC mains. But then you are an IT guy. Who has no idea how robust hardware really is.

Has no idea that direct lightning strikes all over the world, over 100 years ago, caused no damage to low voltage hardware (ie telephone equipment) when and because earth ground was properly implemented.

Please stop claiming superiority using 'IT' as proof. If informed, then stated is why ALL professionals required low impedance connections to earth ground. So that surges (including direct lightning strikes) cause no damage. Cited professional sources. What have you posted? Technical lies justified only by hearsay and tweets.

IT people, so often, have no idea how a computer or electricity works. A perfect example of ignorance is "high voltage telephone equipment." The lie suggests knowledge only as a salesmen or accountant for Nokia.