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Why DAC cables over Cat6a or Cat7
10G Ethernet seems to be really hot, all my SPF+ connectors are hot, my TP-Link 10G switch is hot. It seems not be efficient anymore in that regards. While my 10G fiber and 10G SPF+ DAC cables are perfectly cool. I hope this is temporary but 10G Ethernet seems hot. I haven't seen anyone write on this topic yet but it is my findings.
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> 20 year old cables? I just bought a new house and the previous owner had phone lines everywhere (bedrooms, kitchen, office, rec room - honestly kind of weird). The house was built in 2002 and I gather that it was common at that time to put in Cat5e and just not use all the pairs. So all it took was a pleasant afternoon with the circuit toner, a new patch panel, and a few keystone jacks, and now the house is network…
Five years ago I bought a house built in 2008, and every room has at least 2 ethernet (cat6 even, good for them), 2 coax, and 2 telephone. I guess this was some sort of transition period where people were starting to understand the benefit of running ethernet, but people hadn't cut their tethers from their landlines yet. The coax is a bit weird, though. Two ports per room? Seems like overkill, but I guess it's better…
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From the last quote I got, I could buy almost 10 third-party Fs.com optics for the price of a Cisco OEM optic ($2,500 vs $250). And the FS.com seem to be manufactured more durably. And have a lower failure rate.
Personally I prefer Flexoptix for two reasons. First, they are reprogrammable. They will send you a free programming box with your first order if you agree to a public testimonial on their website. Support are also very responsive if you need new codings they'll try to work with you to find something that works (they can push new codes to your coding box). Second, more recently, they have the option to choose "not ma…
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First I've heard of this! What's the advantage, in your experience?
It’s easier to pull new cables in a conduit through an empty cell of innerduct than it is to pull a new cable through a conduit with existing cables already in it. It tends to be used for fiber conduits. Here’s a product I’ve purchased for my electricians to install: https://www.maxcell.us/shared-downloads/cp145_MaxCell_Edge_D...
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If I am wrong, then explain why this 24-strand plenum rated fiber optic cable has a minimum bend radius of 5.9”: https://leviton.com/content/dam/leviton/network-solutions/pr... Part number: LTP12B024 I am running a project where the low voltage contractor is pulling this fiber cable into a conduit my electricians are installing. I don’t doubt your bend radius claims on the fiber optic cables you listed, but there are…
There are not far more types of fiber cable, there are far more types of jackets :) You are confusing the cable jacket with the fiber cable inside of it. This is the spec on the jacket they use and they didn't design this particular jacket to be flexible enough to survive flexing at the level the fiber cable inside of it can. Sure - not all jackets can be bent as much as the fiber. Some because they are not made to b…
Ahhhh, thanks for clarifying! Now I understand what you’re saying, the jacket and fibers have different bend radiuses (radii). I appreciate you taking the time to explain :) also, noted about there only being a few types of fiber, with a multitude of jackets.
I’ll let my low voltage subcontractor know about the underwhelming Leviton cable, it’s a plan and spec public job so it’s possible the Leviton rep is friends with the engineer and got their cable flat specced, wouldn’t be the first time!
I’m only responsible for the raceway, it’s a 2500’ run between two college campuses separated by a highway that runs outside for a good chunk of the distance so it’s possible the jacket is beefy and inflexible for temp resistance. I’m much more familiar with electrical conductor jackets, THHN and XHHW-2, which are PVC and XLPE, respectively.
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IMO a not-tiny house should have several sub-panels: Kitchen (enough to run the big stove + ~100A, but every outlet it's own 20A circuit), 'lab' / workshop (same idea), laundry room (lock-out breaker near / in room for connecting / disconnecting), etc. A family member who's doing better in life than I am purchased a house built within the last 5 years, and it didn't even _have_ Ethernet run anywhere. WHY!?! I can't f…
> MO a not-tiny house should have several sub-panels: Kitchen (enough to run the big stove + ~100A, but every outlet it's own 20A circuit) This seems like crazy overkill. Certainly there are kitchen appliances that devour power, but... what? Assuming an electric stove/oven, you really just need one dedicated circuit for that, and then everything else can run off another circuit. If you expect to use a microwave often…
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> Only a single ethernet port in the basement. Then the kid wanted a gaming station and we moved where the TV was. I should have put like 4 down there. https://store.ui.com/us/en/category/all-switching/products/u... Unless you meant with regards to routing the cables throughout the space, like now it’s on the opposite wall from the port. I’ve definitely shoved cables under baseboards, but you can also pull them off a…
> You can also get baseboards (that look nice in a home) then double as cable runs. Interesting. That would be great in the basement. I will look into it.
Yeah, we got a new house built 4 years ago and one of the biggest regrets is not enough ethernet outlets (running fibre in the house isn't practical yet) and power outlets in various places. It is really hard to think of all the places you would want them ahead of time unfortunately and as each has a cost you don't want to incur it unnecessarily. But my biggest regrets were: - Only a single ethernet port in the basem…
That's why pretty much every office space/building over here has cable trunking/channels on the walls instead of fixed wiring, eg: https://www.elba.si/izdelki/parapetni-kanali/ https://www.obo.si/izdelki/izdelkiinstalacije-v-zgradbah/bis... Need one more outlet? Remove the plastic cover, insert cable, insert outlet, cut the plastic cover to make space for outlet, and you're done.
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And clean the fiber connector ends with a special cloth or cleaning liquid. Once, I had an intermittent link due to dust particles. Fun fact 1: When you don't have a proper OTDR fiber tester to check for breaks, you can shine a laser pointer down the fiber and see it projected out on a sheet of paper on the other end (you might have to call the person on the other end). Fun fact 2: If the other end is plugged into a…
The last one may not work anymore. A ton of phones nowadays have IR filters.