Glossary

Cable tray (bandeja portacables)

A metal or PVC support, shaped as an open channel or a wire mesh basket, that carries many cables in view along ceilings and walls. It is the typical cable route in garages, warehouses, shops and plant rooms.

What a cable tray is

A bandeja portacables is an open cable route hung from the ceiling or fixed to the wall to carry many cables together and in order. It can be steel wire mesh (cable basket), perforated sheet, solid sheet or PVC.

Where it is used

  • Communal garages, for lighting, ventilation and EV charging lines.
  • Warehouses and workshops, to feed machinery.
  • Shops and offices, above the false ceiling.
  • Plant rooms and telecoms rooms, keeping power and data apart.

Advantages over conduit

A new cable can simply be laid on the tray without dismantling anything. Cables run in open air, so they stay cooler, and a damaged one is easy to inspect or replace. In a garage where each owner will add a charger over time, one shared tray saves work for everyone.

Requirements

  • Sheathed cables: on an open tray you use sheathed multicore cable, not single wires.
  • Metal trays connected to earth (ground), so they cannot become live if a cable is damaged.
  • Separation between power and data cables.
  • Enough supports for the weight.
  • In garages and public premises, halogen-free cable such as RZ1-K (AS) and fire sealing where it crosses between fire compartments.

Cable tray and EV charging

In a communal garage, the line from the meter to the parking space usually runs in rigid conduit or on a metal tray. If several chargers are planned, a shared tray is worth it. See EV charger in a communal garage in Seville, Spain.

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