Frequently Asked Questions
Can works run during live service?
Major pulls occur during night possessions; micro‑pulls above suspended ceilings can run after last train without public access. Bypass links keep critical systems online.
Is shielded cable required throughout?
Shielded Cat 6A is recommended near high‑EMI zones: transformers, PA amplifiers, traction rooms. Admin offices may use F/UTP to balance budgets.
Do we need new switches?
If current switches are 1 Gbps‑capable, they can stay short term. Cabling is sized for future 10 Gbps uplifts; ACCL provides staged switch‑upgrade roadmaps.
How is heritage décor protected?
Surface traywork is powder‑coated to match ironwork; fixings align with existing grout lines to respect listed‑building requirements.
What warranty do we receive?
25‑year system warranties cover components and labour, transferable if franchises transition or Network Rail takes direct control.