A sudden power cut is unsettling: the fridge falls silent, screens go off and, at night, the whole house is plunged into darkness. The good news is that most household power cuts follow a recognisable pattern and can be diagnosed calmly by following a few steps. Knowing how to tell a general fault on the grid from a problem in your own installation saves you time, unnecessary calls and, above all, stops you handling something you shouldn't. At ElectriPro Alicante we handle emergencies 24/7 with a response time of 30 to 45 minutes and no weekend surcharge, but before you pick up the phone it is worth running these checks.
Step 1: is it just your home or the whole street?
The first thing is to gauge the scope of the cut. Look out of the window or step onto the landing:
- If your neighbours and the street lighting are also off, it is a general fault with the distribution company (Iberdrola, Endesa or whoever operates in your area). It is not a problem with your installation and there is nothing to repair indoors. Notify the distributor and wait; they usually announce restoration times.
- If only your home has lost power and the rest of the building is fine, the problem is in your installation, almost always in the electrical panel. Here you can run a basic diagnosis.
This simple step stops you wasting time on your panel when the fault is on the grid, or waiting for the company when the problem is at home.
Step 2: check the electrical panel
If the cut affects only your home, go to the electrical panel and see which switch has tripped. The position of each one tells you a lot:
- The main switch (IGA) down: the protection for the whole house has tripped. This usually points to a general overload or a serious fault.
- The RCD down (the switch with a test button, usually marked "T"): it has detected a current leak to earth. This is the protection that prevents electrocution, so its tripping almost always points to moisture, a faulty appliance or a damaged cable.
- A single circuit breaker down: the problem is limited to one circuit (the kitchen, the sockets in one room, the air conditioning). The rest of the house keeps its power.
Identifying which one tripped is the single most useful piece of information you can give an electrician over the phone.
Step 3: tell apart overload, short circuit and earth leak
Once you have located the tripped switch, try to understand why it tripped. There are three common causes:
- Overload. Too many high-consumption appliances at once —oven, hob, air conditioning, hairdryer— exceed the contracted power. This is the most frequent cause in summer. Turn some appliances off before resetting.
- Short circuit. Two conductors come into direct contact and the breaker trips instantly. It is usually down to a specific appliance or a damaged socket.
- Earth leak. The RCD trips because current is escaping where it shouldn't, often through moisture or a defective appliance.
How to isolate the culprit: unplug everything on the affected circuit, reset the switch and plug the appliances back in one by one. When the switch trips again as you connect a particular one, you have found the offender. Do not use it again until a technician checks it.
What you must NEVER do
During a power cut, some instinctive reactions are dangerous. Always avoid them:
- Do not handle the panel with wet hands or while standing on a damp floor.
- Do not force or jam an RCD that keeps tripping. If it won't stay reset, it is doing its job: there is a real fault that must be located. Defeating that protection gambles with electrocution and fire.
- Do not open the panel or touch the internal wiring. Resetting a switch is safe; dismantling the panel is not.
- Do not use candles near curtains or flammable materials. Use torches or your phone's light.
- Do not ignore a burning smell, crackling or heat in a socket. These are signs of immediate danger: cut that circuit and call a professional.
When to call an emergency electrician
There are situations where you should not keep investigating on your own. Call a licensed electrician immediately if:
- You notice a burning smell, smoke or crackling in the panel, a socket or an appliance.
- The RCD won't stay reset no matter how often you try.
- You see sparks when plugging or unplugging.
- There is water near the installation (a leak, a flood, moisture in the panel).
- Part of the house loses power with no obvious cause and you cannot locate the circuit.
- The cut coincides with a storm and you suspect lightning has damaged the installation.
In these cases the priority is safety, not saving the cost of a visit. A professional diagnosis with proper instruments prevents bigger problems.
A small kit to be ready
Faults arrive without warning, almost always at night. Having the basics to hand makes the difference:
- A torch with charged batteries in a fixed, known place (don't rely on your phone alone).
- The phone number of a trusted electrician saved before you need it.
- Knowing where the electrical panel is and keeping clear access to it, no furniture in front.
- For areas with frequent cuts, consider a UPS or a small backup system for sensitive equipment.
When resetting isn't the answer
If after these checks the problem persists, if the switch trips again and again or if you spot any sign of danger, the sensible thing is to call. At ElectriPro Alicante we work across the whole province —from Benidorm to Torrevieja, through Alicante city, San Vicente del Raspeig, El Campello and Santa Pola— with a 24-hour emergency service, 365 days a year. We arrive with the diagnostic equipment needed and work in Spanish, English, Russian and Ukrainian.
You can call or message us on WhatsApp at +34 633 643 458 at any time. With an electrical fault, a timely call always works out cheaper than a late repair.
