ᐅ Conduits for Satellite and Telecommunications: Mandatory or Not in New Construction?
Created on: 29 Jun 2022 17:46
D
darksunHello,
I am unsure whether it is mandatory for the builder (prefabricated house) to install SAT and telecommunications cables (future-proof) in empty conduits or not.
Or does this requirement only apply from the handover point to the first main distribution point within the house (DSL modem, SAT multiswitch, etc.) and not to the individual outlets?
I found DIN 18015, but how should it be interpreted?
I am unsure whether it is mandatory for the builder (prefabricated house) to install SAT and telecommunications cables (future-proof) in empty conduits or not.
Or does this requirement only apply from the handover point to the first main distribution point within the house (DSL modem, SAT multiswitch, etc.) and not to the individual outlets?
I found DIN 18015, but how should it be interpreted?
C
clausen771 Jul 2022 00:02I don’t understand your question. The developer does what is specified in the construction scope. What is included in your contract? For example, in our case, TV connections were included in all rooms. However, I had them removed because I want to cover everything via IPTV. I will then receive a small credit…
clausen77 schrieb:
The developer does what is stated in the building specification. That is what they have to do.
The point is that they must also carry out certain things even if these are not included or would not be included in the building specification.
To give an exaggerated example:
Even if the building specification does not mention grounding conductors for sockets or residual current devices (RCDs),
the sockets MUST be connected with grounding conductors and RCDs must be installed.
My question:
What about empty conduits for satellite and telecommunications cables?
Is this not mandatory in new builds? Is there perhaps a DIN standard that requires this?
W
WilderSueden1 Jul 2022 10:50Why should this be mandatory? It is not safety-related but a matter of luxury.
Regarding DIN 18105 and the relationship between technical standards and law, the Federal Court of Justice (BGH) ruled on May 14, 1998 – case number VII ZR 184/97 – based on the meaning and context of DIN 820: DIN standards are not legal regulations but private technical guidelines with a recommendatory character. They may represent the recognized rules of technology or fall short of them.
For safety-related specifications in DIN standards, there is a factual presumption that they are professionally appropriate, meaning they represent the "recognized rules of technology." So the question here would be whether an empty conduit is necessary for safety reasons because otherwise there would be a risk. In my opinion, for telecommunications cables, unlike the elements required by DIN such as surge protection or residual current devices (RCD), this would clearly be denied. Therefore, it is not mandatory for the electrician to use them—unless this has been expressly agreed upon [U].
So discuss this with the electrician and plan accordingly. However, please note that you should avoid too tight bending radii and too many bends; otherwise, you will not be able to replace anything later on (for example, CAT-7 requires a minimum bending radius of around 50mm (2 inches)). If there are three bends, an additional pull box in the middle would also make sense. In terms of diameter, use at least DN 25, ideally DN 32. In other words, an empty conduit DN 20 installed at right angles over four bends might still be an empty conduit, serving as a protective sleeve—but only formally suitable for replaceability.
For safety-related specifications in DIN standards, there is a factual presumption that they are professionally appropriate, meaning they represent the "recognized rules of technology." So the question here would be whether an empty conduit is necessary for safety reasons because otherwise there would be a risk. In my opinion, for telecommunications cables, unlike the elements required by DIN such as surge protection or residual current devices (RCD), this would clearly be denied. Therefore, it is not mandatory for the electrician to use them—unless this has been expressly agreed upon [U].
So discuss this with the electrician and plan accordingly. However, please note that you should avoid too tight bending radii and too many bends; otherwise, you will not be able to replace anything later on (for example, CAT-7 requires a minimum bending radius of around 50mm (2 inches)). If there are three bends, an additional pull box in the middle would also make sense. In terms of diameter, use at least DN 25, ideally DN 32. In other words, an empty conduit DN 20 installed at right angles over four bends might still be an empty conduit, serving as a protective sleeve—but only formally suitable for replaceability.
darksun schrieb:
What about empty conduits for satellite and telecom cables?
Aren't they mandatory in new constructions? No, empty conduits are not mandatory since they are only intended to simplify future upgrades. Telecom meaning telecommunications? Why would you need to upgrade that? A single connection point and proper end planning are sufficient. Also, plan for satellite at the same time.
Don't prefab houses usually include an installation level or service shaft?
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