Wiring for AP, choosing the correct network cable

  • Erstellt am 2021-05-24 21:46:34

hanse987

2021-05-27 21:55:58
  • #1
When it comes to electrical topics, I'm out, as I only let the electrician handle that due to lack of knowledge.

LAN is normally wired from a central point -> star wiring. However, compromises must sometimes be made on existing installations, but this always needs to be examined in detail. For installation cable, I would go for CAT 7 or CAT 7a. Always lay these cables exchangeably in protective conduits. Observe installation zones and do this in close coordination with the electrician.

Network outlets should always be placed where devices are planned. Don't forget adjoining rooms like hobby rooms and garages. Basically, always install a double socket that doesn't take up more space than a single socket. Always use a deep flush-mounted box for network outlets or even better, an electronics box. Where all cables come together, it is best to install a network cabinet; the cables end in a patch panel (like a network outlet but with many ports). For network outlets and the patch panel, I would choose keystone modules, as these are more fault-tolerant and thus better for novices. They also have some other distributors. The grounding of the network cabinet should always be done by the electrician. You can check out Kabelscheune. They have a good overview of individual network components.

In addition to the fixed wiring of the components, WLAN also comes into play. Here, at least one access point per floor should be provided. Ideally position it high on the wall or on the ceiling. If not using POE access points, power must also be supplied nearby. For WLAN, also consider the access point for the terrace and garden, as in-house coverage usually does not reach those areas.

That was now a quick overview of the topic. Read up, read up, read up!
 

K1300S

2021-05-28 06:10:10
  • #2
This is also strongly recommended for . Anyone who has to ask such questions should definitely keep their hands off electricity, otherwise it can end badly.
 

Christian144

2021-05-31 09:03:10
  • #3
Good morning to the Ruden,

since there has been so much talk about CAT7 and CAT7A cables... Are there actually quality features for network cables? Or rather, what should one pay attention to (besides the maximum possible speed) before buying network cables for installation in new buildings?
 

K1300S

2021-05-31 09:23:13
  • #4
Quality characteristics in terms of good manufacturer, bad manufacturer do not really exist, since everything is standardized. The particularly good manufacturers simply provide detailed measurement data for their cables, but most consumers (and electricians) cannot really make use of it.

It is interesting that, for example with Cat.7, different maximum transmission frequencies are sometimes specified, but they still meet the minimum standard. So there are some with 600 MHz (minimum) and some with 1000 MHz. In addition, the physical properties of the cable are not necessarily equivalent to a certain bandwidth, because the different standard levels were developed at different times and pursue different objectives. Example: Cat.8 is specified up to 100 GBit/s, but only at considerably shorter distances than Cat.7. Therefore, it does achieve the required 1600 MHz - but only at a maximum of 30 m, whereas Cat.7 (at least) achieves 600 MHz, but at up to 100 m. I therefore believe that a good Cat.7a, which is specified for example with 1500 MHz, is hardly worse (if at all) than a standard-compliant Cat.8.

As far as I know, there are currently no Cat.8 duplex cables, which makes installation somewhat more complicated. Otherwise, properties such as the cross-sectional area of the conductor should be mentioned. Most installation cables are AWG 23. Using AWG 22 cables could be advantageous for long distances and the use of PoE. And last but not least, it also depends on the diameter of the entire cable, whether it is easy or less easy to install, but this also has no influence on transmission quality.

You can see that this is a pretty complex, multidimensional topic that overwhelms most electricians completely. That is why it is good for building owners to acquire at least some knowledge about it.
 

T_im_Norden

2021-05-31 09:38:46
  • #5
Pay attention to the shielding of the cable
 

K1300S

2021-05-31 11:10:08
  • #6
That was the crucial hint! :D
 

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