A voltage surge (or power spike) can fry appliances, chargers, and electronics connected to the mains in seconds. If you've noticed flickering lights, a loud crack, and then devices that stop working, it's important to identify the cause before it happens again.
At Servicio24 Electricistas we inspect the fuse box and the wiring to locate the source of the problem and prevent it from happening again, 24 hours a day, 365 days a year, anywhere in Barcelona.
Most common causes of a voltage surge
⚡ Fault in the external power grid
An incident on the utility company's network can cause voltage spikes affecting an entire stairwell or building.
🌩️ A nearby lightning strike
An electrical storm can induce surges in the wiring, even without a direct hit on the building.
🔌 Poorly connected neutral in the fuse box
A fault in the neutral connection can cause voltage to rise uncontrollably in part of the installation.
🏚️ Old wiring without proper protection
The lack of a surge protector leaves connected appliances exposed to voltage spikes.
🔧 Fault in the local transformer
A fault at the nearby transformer station can alter the voltage reaching homes.
🔥 Momentary overload on the building's network
A simultaneous spike in consumption across the building can cause voltage variations detectable in several homes.
What to do if there's been a voltage surge
Unplug the affected appliances
Unplug any devices that have stopped working to prevent further damage if the voltage is still unstable.
Don't keep resetting the fuse box
If a breaker has tripped, reset it only once; if it trips again, there's a fault that needs checking.
Call +34 673 73 37 20
We diagnose the source of the problem and inspect the wiring on the same visit, 24 hours a day.
Transparent diagnosis
We explain the fault and the fix before we start.
Frequently asked questions about voltage surges
How do I know if what happened was a voltage surge?
Typical symptoms include intense flickering lights, a loud crack, a burning smell from an appliance, or several devices stopping at once after a specific event.
Can I claim compensation from the power company if appliances were damaged?
It depends on the case; it helps to document the damage and the date of the incident. A professional diagnosis helps determine whether the cause was internal or from the external grid.
Is it worth installing a surge protector?
Yes, a surge protector in the fuse box greatly reduces the risk of a voltage spike damaging connected appliances.
How long until you arrive to inspect the wiring after a voltage surge?
We typically arrive within 20 minutes anywhere in Barcelona, 24 hours a day, 365 days a year.
Can the cause be identified on the same visit?
In most cases, yes: we inspect the fuse box and wiring to identify the source and propose the right fix.
Which Barcelona neighborhood are you in? 20-min emergency coverage
Has there been a voltage surge in your home?
Call us or message us. We inspect the wiring and explain what happened within 20 minutes, anywhere in Barcelona.