Glossary
Individual riser cable (derivación individual)
The line that connects your meter, in the building's meter room, to the fuse board of your home or premises. Its cross-section sets the maximum power you can contract without replacing it.
What the riser cable is
It is the last section of the building’s service installations. It leaves your meter in the meter room, rises through the building’s service shaft and reaches your home’s fuse board, where the main switch (IGA) sits. It is governed by ITC-BT-15. Although it runs through communal areas, it serves only your home.
Why it limits your power
Each cable carries a maximum current depending on its cross-section. If the riser cable was sized for low power, as in many old flats, raising your contracted power may mean replacing it with a thicker one. Voltage drop is also counted from the meter, so in tall buildings or with a distant meter room the length matters too. For example, for an EV charger on scheme 2, the 5 % voltage drop limit includes the riser cable.
When it must be upgraded
- When raising your power beyond what its size allows.
- When switching from single-phase to three-phase.
- When the cable is old, damaged or heats up.
- When adding big loads, such as an EV charger, aerothermal heat pump or induction hob.
Who pays for it
As it serves only your home, the owner pays for the upgrade. If it has to pass through communal areas, it is wise to inform the comunidad (owners’ association). Afterwards a boletín is issued for the distributor for the new power.
If you lose power while your fuse box is fine and your neighbours have power, the fault may be in the riser cable. See increase contracted power in Seville, Spain.
Related services
Increase contracted power
You need to increase your electricity power in Spain when the smart meter cuts everything off as soon as the air conditioning, the oven and the washing machine run together. We check what power your installation can take, upgrade the supply cable, main switch and fuse board if needed, and issue the boletín so the distributor approves the increase.
Power cut at home
No electricity in your apartment while the neighbours still have lights? Then the fault is in your part of the installation: the riser cable from the meter, the fuse board (consumer unit) or a joint. We find the cause, whether the whole home is dark or only half of it, and repair it.
Meter room upgrade
A meter room upgrade moves the meters scattered across floors, landings or the façade into a regulation meter room or cabinet in your building in Seville, Spain, with new individual supply cables to each home. We prepare the technical documents, coordinate with the distributor, carry out the work in phases and leave the building ready for more power and EV chargers.
Need an electrician in Seville, Spain?
Call us or send a WhatsApp message with a photo of the job. You get a fixed quote before any work starts.