As specialist electricians handling rewires, consumer unit upgrades and fault‑finding across Glasgow every day, Home Rewire has seen just about every version of “the electrics have blown” you can imagine. This guide has been written by our team to help you understand:
- The most common causes of power loss in a home
- What you can safely do when the electricity has gone off
- When to stop poking around and call a professional – and what typically drives the cost
- How to stay safe while the power is out
There are plenty of articles online about power cuts. This one focuses on what really happens inside typical Scottish homes when the power goes, and the practical steps our electricians recommend.
Why Your Power Might Be Out – From an Electrician’s View
When customers call us with “no electricity in the house,” the root cause almost always falls into one of these buckets:
- A tripped main switch, RCD or breaker in the consumer unit
- A serious fault on one of the circuits (often sockets or kitchen)
- A failing, outdated fuse box that has finally given up
- Ageing wiring that can no longer cope with modern loads
- Less commonly, a genuine external supply problem
The right fix – and the right long‑term plan – depends on which of these you’re dealing with. The rest of this guide walks you through the same thought process our electricians use on real call‑outs.
Step One: Is It Just You, or the Whole Area?
Before you touch anything, establish whether this is a house problem or a grid problem.
- Look at the street: are the streetlights or neighbouring homes still lit?
- If you can, check quickly with a neighbour.
If everyone around you is off, you are almost certainly dealing with a power grid issue or storm damage. In that case, the safest move is to follow the guidance from your local network operator and focus on staying safe and comfortable until they restore supply.
If nearby homes are fine and only your property is dark, the problem is almost certainly inside your installation – this is exactly where our team’s expertise comes in.
Step Two: A Controlled Look at Your Consumer Unit
In most Glasgow homes, the consumer unit (fuse box) is the heart of the system. When an entire property loses power with no outside cut, this is the first place our electricians look.
You can do a basic visual check:
- Find the consumer unit (often by the front door, under the stairs or in a utility area).
- Look for:
- The main switch – is it off?
- Any RCDs that are down or “tripped”.
- Any MCBs (individual circuit breakers) sitting down or in an odd middle position.
If you see signs of burning, melting, scorching or water anywhere near the board, do not attempt to reset anything. Turn everything off if it is not already and call an electrician – that is a red‑flag scenario our engineers treat as urgent.
Step Three: One Safe Reset – No More
If the board looks physically sound and you can clearly see one tripped device:
- Turn off or unplug as many major appliances as you can (kettle, oven, heaters, washing machine).
- Try resetting the tripped RCD or breaker once.
- If:
- It stays on and power returns, watch what happens over the next few hours and days.
- It trips immediately or refuses to reset, stop right there – that is exactly when a professional needs to step in.
Our engineers are called out far too often to installations where people have repeatedly “hammered” a fault back on. That might get you temporary power, but it risks overheating, arcing and more extensive damage.
Common Internal Causes We See (and How We Deal with Them)
Tripped Switch in the Fuse Box – With a Real Fault Behind It
From our experience, a tripped device is usually doing its job: reacting to a fault, not randomly misbehaving.
Typical triggers:
- A short circuit on a socket or lighting circuit
- A faulty appliance leaking to earth and taking out the RCD
- A long‑overloaded circuit finally hitting its limit
How we approach it:
- Isolate circuits and appliances methodically, rather than guesswork.
- Use proper test equipment to see which circuit is at fault.
- Repair or replace the problem section – not just flip the switch back up.
In some homes, this kind of call‑out also reveals that the underlying wiring and consumer unit are long overdue for an upgrade.
Faulty Wiring – Especially in Older Properties
Glasgow has no shortage of older housing stock. Our electricians regularly find:
- Rubber or cloth‑insulated cables still in service
- Junction boxes hidden under floorboards or in lofts that have cooked over time
- DIY additions spurred off existing circuits in ways that were never designed
Symptoms include:
- Complete loss of power to sections of the house
- Repeated tripping when certain rooms or appliances are used
- Heat damage at sockets, switches or the consumer unit
In these cases, we are upfront: a quick “patch” is often false economy. Once wiring reaches this stage, a full or partial rewire is usually the only sensible long‑term answer. That is exactly the kind of work Home Rewire is set up to deliver.
Consumer Unit or Main Switch Failure
Old or budget‑grade consumer units can become a problem in their own right:
- Main switches that feel loose or fail internally
- Plastic enclosures with clear signs of heat damage
- Mixed‑age fuses and breakers bodged into the same board
When the main control gear starts to fail, it can take the whole house off for no obvious external reason.
What we typically recommend:
- Replace the old board with a modern, metal‑clad consumer unit
- Fit the correct combination of MCBs and RCD/RCBOs for your circuits
- Test every circuit properly before reconnecting
It is an investment, but it is also one of the most powerful safety upgrades you can make to a home’s electrics.
Genuine Supply Issues – But Only for Your House
Occasionally, we attend homes where the incoming supply equipment (before the consumer unit) is the culprit – for example, a failing service head or meter connection. This kit belongs to the network operator or supplier and must be handled by them.
Part of our job in those situations is recognising where our remit ends:
- Make your side of the installation safe and tested
- Liaise or advise you to contact the right party for supply‑side faults
This is one of the advantages of using a company that spends its life solving exactly these scenarios rather than a general handyman.
When to Call a Professional – and What Drives the Cost
You should get an electrician involved straight away if:
- The main switch or RCD will not reset at all
- Power returns briefly then trips again with nothing obvious running
- You can see or smell any sign of overheating or burning
- The property has obviously old wiring or an old‑style fuse box
- This is not the first time everything has gone off without a local power cut
From our side, pricing typically depends on whether you need:
- Straightforward fault‑finding and repair – for example, an appliance fault or a single damaged circuit.
- A consumer unit replacement – a bigger job, but a future‑proof safety upgrade.
- A full or partial rewire – the right choice when the wiring itself is the root of the problem.
Because Home Rewire spends most of its time on rewires and consumer unit upgrades, we can usually give clear, fixed prices once we’ve assessed the installation, rather than vague estimates.
Staying Safe Until the Fault Is Fixed
While you are waiting for an engineer or for external power to be restored, a few simple actions make a big difference:
- Use torches or battery lights instead of open candles wherever possible.
- Keep fridge and freezer doors closed to preserve food.
- Turn off sensitive electronics at the socket until power is stable again.
- Avoid travelling up and down stairs in the dark without a light.
- Do not remove covers from your consumer unit, meter or accessories.
If you ever see smoke, flames or feel that something is dangerously hot, your priority is to get everyone out, call emergency services, and let them and your electrician take it from there.
Home in the Dark Help
This isn’t a generic “power cut” checklist. It reflects exactly what our electricians see and fix every week in Glasgow homes:
- Older wiring struggling with modern demand
- Consumer units that are well beyond their intended lifespan
- Faults that get reset again and again until something more serious happens
Home Rewire Glasgow wrote this guide to give homeowners an honest, practical framework: what you can sensibly check yourself, where you should stop, and what the likely next steps are when an expert gets involved.
FAQs
Could my electrics be “blown” even if some things still work?
Yes. It’s common for one main RCD, breaker or a specific circuit to trip while others stay on. You might have lights but no sockets, or upstairs working and downstairs dead. That still points to a genuine fault that needs investigating, especially if it keeps happening.
Is it worth upgrading my consumer unit if this has only happened once?
If your board is modern, metal‑clad and fitted with MCBs and RCD/RCBOs, a one‑off trip may just mean the protection did its job. But if you still have an old fuse box or a very dated plastic unit, a single major incident can be a good early warning that it’s time to plan a proper upgrade before more serious issues appear.
Will a full house rewire stop this from happening again?
A rewire, combined with a new consumer unit, dramatically reduces the risk of unexplained outages caused by ageing cables, loose joints and overloaded, piecemeal circuits. You can still get the odd trip if, say, a faulty appliance fails, but the system will be safer, more stable and much easier for an electrician to fault‑find if anything does go wrong.
