Low-Voltage Cabling: The Small Part of the Budget That Decides Reliability

Clients see keypads and apps. Engineers see cables. Get the low-voltage cabling right and the system will run for decades; get it wrong and no software can fix it.

Low-voltage cables are a modest part of a smart home budget, but they decide what is possible for the next 20 years. Here is what a modern home needs and the mistakes we see most often.

What cables a smart home needs

• Network (Cat6/Cat6A) to TVs, Wi-Fi access points, cameras, touch panels and the intercom.
• Bus cable (for example KNX) to keypads, sensors and thermostats.
• Speaker cable from the amplifier rack to every speaker.
• Control and power to each motorized shade.
• HDMI/HDBaseT routes for TVs and the cinema.

Common mistakes

• Wi-Fi from one router. Large villas need several ceiling access points, each on its own network cable.
• No cable to the gate. Intercom, camera and gate motor control are often forgotten until the landscaping is done.
• Unlabelled cables. Every cable should be labelled at both ends and documented.
• Cables next to power. Running data cables too close to power cables causes interference.
• No spare conduits. Technology changes; an empty conduit is your upgrade path.

Testing before closing walls

Every cable is tested and photographed in place before the walls are closed. These photos are invaluable years later when you want to add a device.

That is why we prefer to be involved from first fix. See our pre-fit-out checklist.