Cat 6 to outbuilding

I am thinking of extending my network to an outbuilding. A lot of what I read contains dire warnings about the consequences, in part because outbuildings often should be T-T earthed - ie have the earth cpc connected to a local ground rod for the outbuilding. In my case, I can use the house earth with no issues because we have a T-NCS earth. So the risk is a lightning strike in the vicinity causing a difference in potential between the 2 ends and taking out some network kit.

So, my questions:
[1] I am thinking of using a short length of fibre between switches at one end as an optical isolator. Any comments or recommendations?
[2] Any other thoughts or experience on this situation?

Thanks for any input.

Might update a few things, but good for a look…

https://forums.thinkbroadband.com/multiuser/t/468521...

Ah, thanks for that. I found these off the back of that:
https://forums.thinkbroadband.com/multiuser/f/468098...
https://forums.thinkbroadband.com/multiuser/f/467914...

A good start, although I am not so keen on helical armouring for the fibre - depends whether I can duct this.

Seal the end of the ducts with duct sealant if you use tight buffered fibre sure to the risk of rodent damage. Loose tube construction would be good enough in ducting, you then don’t have gel mess to deal with either.

How far?

What speed do you have in the house and what do you want remotely?

Budget?

It's about 30m. I have 1000M in the house and 160M incoming FTTP. Realistically, 100M at remote end would be good enough, but for the most part, I think that if I achieve 100M, the cost to go to 1000M will be trivial. Assuming Cat 6 or Fibre.

Prefer not to do wireless and I have some trenching needed anyway, so another cable or fibre will not be a problem. Budget is not a big deal as long as I am not doing a private link between house and outbuilding via Starlink.

The main issue here is getting electrical isolation, hence looking at a very short optical link

If you are trenching then run in two fibres - just in case

I use Ubiquiti NanoStation Loco5AC wirelessly to my Garage and get a 300+Mbps link and it could be faster but I only need 15-20Mbps.

You can also get pre-terminated SWA fibre kits. I've previously used Paragon Networks to do 120m, 135m and 350m links with 4-core single-mode. I know that FS.com also do various pre-term/armoured cabling solutions, but not used their specific products in this space.

My preference is always to use single-mode as it allows far more flexibility. For example you can run Sat/Terrstrial/Radio from a FIRS-based antenna/head-end along a single core of SMF, so perfect TV in your shed (...along with perfect internet access)

Did you move ahead with this or make any progress?

Hah! The outbuilding is not yet built. The question is for the design phase. But all input appreciated.