Cable protection through conduits
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The outdoor sections are laid through cable trenches, while the areas passing under roads are protected by conduit. Can multiple cables be run through one tube? For example, 10 main cables of 10×2×2.5 passing through a DN150 pipe?
There is no explicit rule stating that it is not allowed, but the filling factor needs to be taken into account, and attention should also be paid to the type of signal – for example, distribution signals, analog signals, and digital signals should all be routed through separate tubes
Just separate high-voltage and low-voltage circuits; don’t overload it.