multiple Cat6 through external cavity wall

PlantHunter · Post by **PlantHunter** » Thu Jul 18, 2024 3:22 pm

I need to pass 11 outdoor rated cat6 cables through a single point (core drilled hole) in an external cavity wall. I had thought that something like a wiska box would work whereby i could use glands to bring each individual cable into the box and then route them all out the back of the box via pvc pipe/conduit through the wall to the inside of the building. However I can't seem to find the equivilent box which would take 11 cable glands which would be located on the bottom or sides of the box. I had steered away from top entry as i dont want to encourage any water entry from above over time.

I dont want to use those "Roman Nose" cover plates as i dont think they would accomadate that many cables and the external wall is pebbledash.

Does anyone have any suggestions/words of wisdom as to how I could go about this? Keeping the entry point draught-free and waterproof is key. I'd also rather not just fill the hole after the cables are ran through in the event that more neet to be added/replaced later.

Thanks

Someone-Else · Post by **Someone-Else** » Thu Jul 18, 2024 3:54 pm

As there will be a big hole through the wall to accommodate your 11 cables, but with room for more, and you want to be able to use glands in the box, why not use a big box that will cover the hole and have room to drill holes for more glands in the future, such as click me or this one Click me

PlantHunter · Post by **PlantHunter** » Thu Jul 18, 2024 4:10 pm

Thats spot on actually. If i can find a shallower version of those it will do the job perfectly. Those options have given me better wording to search for now so thanks!

Bob225 · Post by **Bob225** » Fri Jul 19, 2024 7:04 pm

11 external cat6's are you running a miner farm, 2 drops of cat 6 into a switch or 2 will be fine if It's for poe ip cameras i can see why you need 11-12 runs, split in to 2 boxes, be aware the external cat 6 has a minimum bend radius especial if its the reinforced stuff

even with glands, put a drip loop in the cable

as for cables across a cavity use a pipe/conduit, if it is POE don's over fill the conduit 25mm conduit should take 4 cat6 cables or 1 32mm conduit

edit, you can also get 25mm twin cable glands

Bob225 · Post by **Bob225** » Fri Jul 19, 2024 7:37 pm

Avoid the cheap CCA cable, especially if you are using POE

PlantHunter · Post by **PlantHunter** » Mon Jul 22, 2024 5:46 pm

ha ha no miner farm (anymore) but thats a different story.

Yes its for PoE IP cameras. Im aware of bend radius, drip loops and the perils of CCA cable etc. but thanks for mentioning it as many won't be. I peppered my house with cat6 (Connectix Cat 6 UTP plain copper) when we were building and was very strict with bend radius back then. Did i test with a qualified fluke tester? Nope but im not running a data center and i dont have any frame loss statistics to concern me :) - but that was a long time ago and i honestly didnt think about CCTV cameras but times change, crime goes up etc. so here we are.

Did not know about the twin cable glands! Will definately have a look for those. Any reccomended retailers for us non-tradies? Can see screwfix do 32mm twin glands but cant see any 25mm suitable for taking cables of circa 6mm diamiter

Bob225 · Post by **Bob225** » Tue Jul 23, 2024 5:52 pm

tlc direct, cef (can be pricy) not in the IT game now but have pulled a lot of cable and coax over the years - network specific stuff Bownet CMS

you never know people's ability and knowledge, so was covering the bases

Lapp do the twin inserts for 20 and 25mm glands

Not seen these before

https://products.lappgroup.com/online-c ... lti-m.html

https://products.lappgroup.com/online-c ... multi.html

Camera wise I use Hikvision/Hilook let the cameras do the detection and boundaries as it reduces the bandwidth demand and CPU usage on the DVR

PlantHunter · Post by **PlantHunter** » Tue Jul 23, 2024 7:29 pm

Regarding the Lapp Multi M bushes... Oh wow, never seen these before! Thats a great find thanks!

You are right on not assuming someones ability, plus it helps anyone who comes a long after who reads this. I'm in the IT game many moons now, just never done any outdoor work hence my complete lack of knowledge relating to hardware for traversing from indoor to outdoor and staying weathertight.

Cams are bought and ready to go up. Mix of Hikvision and Dahua. Their detection abilities are quite impressive and having the substreams is great for 24hr recording between events without chewing disk space.

Thanks again for your suggestions. You have been a great help.