Question about protecting ethernet network from power surge with UPS with input/output RJ45

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gmoney_70

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Nov 1, 2011
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I purchased APC UPC to protect router, modem, and switch. The device has input/output for ethernet. I was wondering what patch cable I put here. Do I taken ethernet from modem and then connect to router?
 
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I would only look at something that goes outside. Depends if it is really ethernet or something else like DSL that also has rj45.

It is silly to even put ethernet on any form of surge protector. By ethernet standard their are isolation transformers on both ends. There is zero chance of any type of electric power getting into the cables. They are extremely low voltage. The cables are designed to resist any form of induced signals form outside by the way the wires pairs are twisted. Beside these ports are a UPS are not designed to filter interference they are designed to stop equipment damage. When you start looking at what could induce a large enough current on ethernet cable you are talking crazy stuff like lightning...
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bill001g

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Aug 9, 2012
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I would only look at something that goes outside. Depends if it is really ethernet or something else like DSL that also has rj45.

It is silly to even put ethernet on any form of surge protector. By ethernet standard their are isolation transformers on both ends. There is zero chance of any type of electric power getting into the cables. They are extremely low voltage. The cables are designed to resist any form of induced signals form outside by the way the wires pairs are twisted. Beside these ports are a UPS are not designed to filter interference they are designed to stop equipment damage. When you start looking at what could induce a large enough current on ethernet cable you are talking crazy stuff like lightning strikes. If lightning strikes close enough to induce that much power into a ethernet cable that is inside your house you have much more to worry about that some fried equipment.

If it was outside maybe but even then you are looking at something strange.

I guess the key indication this is not really something you would need is in commercial installation we put in thousands and thousands of drops between switches and end devices and never protect them in anyway even when we are running PoE on them.
 
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