On a busy building site, an empty conduit can look useful.
Someone needs to get a cable from one side of the room to the other. The AV pipe is open. The ceiling is still accessible. The temptation is obvious.
That decision can cause real problems later.
Low-voltage conduits are not spare building pipes. They are part of the technology design.
The conduit was sized for a reason
AV, CCTV, Wi-Fi, fibre and control cables each have their own practical requirements.
Some cables cannot tolerate tight bends. Some need enough space for connectors. Some may need to be replaced in future. Some routes are planned so the cable can be pulled cleanly from the head end to the device position.
If another trade adds a cable to that conduit, the route may no longer work as designed.
The AV cable may become difficult to pull, impossible to replace, or damaged during installation.
Mixed services create confusion
When a conduit contains cables from different systems, future fault finding becomes harder.
Nobody is sure who owns the route. Nobody is sure which cable was installed first. Nobody knows whether a later cable damaged an earlier one. The technology team may arrive to complete second fix and discover that the route is already full.
At that stage the building may be painted, tiled or furnished.
The cost of fixing the route is now much higher.
Future replacement matters
A conduit is not only for the first installation.
It should allow future replacement where possible. That matters because TV, network, control and display standards change over time. A route that cannot be accessed or repulled becomes a liability.
Borrowing the pipe may solve one short-term problem while removing the future serviceability of the system.
Separation is part of good practice
Low-voltage routes should also be kept clear from services that may introduce electrical, mechanical or maintenance complications unless the route has been reviewed properly.
This is especially important in premium homes where the AV system is expected to remain tidy, reliable and supportable for years. A clean conduit plan protects the client, the builder, the electrician and the technology contractor.
The better solution
If another trade needs a route, it should be discussed properly.
Sometimes a shared route is acceptable. Sometimes it is not. The important part is that it is decided intentionally, documented and approved before anyone pulls cable.
DG Technologies’ view
DG Technologies prefers low-voltage conduits to be treated as reserved infrastructure.
They are not empty because nobody needs them.
They are empty because the correct cable has not been pulled yet.