The data cabling in your office is the nervous system of your business. Every VoIP call, cloud backup, video conference, and file transfer travels through those copper or fibre strands. Yet many businesses still rely on outdated Cat5e cabling installed a decade ago, bottlenecking their network speed and creating reliability issues that are blamed on "the Wi-Fi."
Cat6 cabling is the minimum standard we recommend for any new office fit-out or refurbishment. It supports 1 Gigabit per second (Gbps) up to 100 metres and 10 Gbps up to 55 metres. For most small to medium offices, Cat6 is perfectly adequate and cost-effective. The cable is stiffer than Cat5e and includes a plastic spline that separates the four twisted pairs, reducing crosstalk.
Cat6a — the "augmented" version — is where things get serious. It supports 10 Gbps up to the full 100-metre channel length and operates at 500MHz compared to Cat6's 250MHz. The cable is thicker and heavier, requiring larger containment and more careful bend radius management, but for businesses running high-density Wi-Fi 6E access points, 4K video editing suites, or large CAD workstations, Cat6a is the right choice.
Fibre optic cabling is the future-proof option. Single-mode fibre can carry 100 Gbps over kilometres, and multimode fibre handles 10 Gbps over hundreds of metres. Fibre is immune to electromagnetic interference, making it ideal for runs alongside three-phase power cables or in industrial environments. We typically install fibre between building distribution frames, from the comms room to Wi-Fi access point clusters, and for any link where distance exceeds 90 metres.
At DCC Electrics, we design and install structured cabling systems for offices in Sevenoaks, retail head offices in Dartford, and industrial units in Medway. Our process starts with a floor plan review: we map desk positions, meeting rooms, wireless access point locations, and any specialist requirements such as PoE cameras or access control. We then specify the cable type, containment route, patch panel layout, and testing regime.
Every installation we complete is fully tested with a calibrated cable certifier. We provide a test report for every outlet, proving that insertion loss, return loss, and crosstalk are within specification. This documentation is essential for warranty claims and for your IT team to troubleshoot issues in the future. Do not trust your network backbone to a handyman with a crimping tool — structured cabling is a specialist trade, and we treat it that way.
