Why Has the Power Gone Off in One Room but Not the Rest of the House?
You switch on a lamp and nothing happens. The sockets in one room are dead, but the kitchen and other rooms still have power. Has there been a power cut, or is something wrong with your wiring?
A loss of power in one room can have several causes.
A protective device may have switched off, an appliance may have developed a fault, or there may be a problem with a socket or circuit. You cannot tell which one it is from the symptom alone.
Here is what you can check safely before calling an electrician, and what information will help them find the fault.
First, work out what has lost power
Check whether the problem affects lights, sockets or both. Try a light or appliance that you know normally works, but do not use anything that looks damaged.
The circuits in a house do not always match its rooms. Sockets in two neighbouring rooms may share a circuit, while the lights in one room may be on a different circuit from its sockets.
Make a note of everything that has stopped working rather than assuming the fault is limited to one room.
If the whole property has lost power, check whether neighbours also have a supply. A wider power cut needs a different response from a fault affecting only part of your home.
In the UK, you can report a network power cut by calling 105.
Check for immediate warning signs
Before touching any switches, look and listen from a safe distance. Do not use a socket, switch or appliance if you notice:
A burning smell or scorch marks.
Smoke, sparks or crackling.
Visible damage or exposed wiring.
Water near electrical equipment.
Keep clear of the affected equipment. If it is safe to do so, switch off the affected circuit and arrange urgent help. If there is a fire or immediate danger, call 999.
Do not remove socket covers or open the consumer unit to investigate. Electrical Safety First advises getting unusual burning, buzzing, heat or repeated tripping checked by a qualified electrician.
Has a breaker or RCD switched off?
If there are no signs of danger and you can reach your consumer unit safely, look at the switch positions. A breaker or RCD may have operated to disconnect power after detecting a problem. Some units have labels that help identify the affected circuit.
An operated switch is a clue, not a diagnosis. The cause may be connected equipment, damaged wiring, moisture or another fault. If a device will not stay on or trips again, leave it off and call an electrician. Repeatedly resetting it does not fix the problem.
Never bypass a protective device or replace it with something you assume has a higher rating.
Could an appliance be involved?
Think about what was being used just before the power went off. Did it happen when you switched on a heater, vacuum cleaner, computer or other appliance? Did water enter an outdoor fitting? Has any building or decorating work recently taken place?
You do not need to diagnose the fault yourself. Tell the electrician what happened and whether it has happened before. If you suspect an appliance and it is safe to do so, stop using it.
Do not unplug equipment that is hot, sparking, wet or visibly damaged.
What if the breaker has not tripped?
A fault can still need attention even when the switches in the consumer unit appear to be on. For example, a socket, connection or part of a circuit may have failed. The pattern of working and non-working points helps an electrician decide what to test.
Avoid using extension leads as a permanent way to supply the room. Arrange fault finding if the power does not return, the problem keeps coming back, or you notice any warning signs.
What should you tell the electrician?
When you call, these details are useful:
Which rooms, sockets or lights have lost power.
Whether any breaker or RCD appears to be off.
What was being used when the power went off.
Whether there is a smell, noise, damage or sign of moisture.
Whether this is the first time or a recurring problem.
You can take a photograph of the consumer unit without removing any covers, if it is safe to approach. That may help the electrician understand what you are seeing before a visit.
Need help with a partial power loss in Greenock?
DTEC Electrical investigates power loss, tripping circuits and other electrical faults in homes across Greenock, PA15 and PA16. We test the affected circuit, explain what we find and discuss the repair needed.
Read about our electrical fault finding in Greenock, or contact DTEC Electrical. For an urgent fault, call 07882 372474 and tell us if you have noticed burning, sparks or exposed wiring.
Comments