My Lights Are Flickering...

1) Causes of flickering lights

At some point, we will all experience flickering lights in our homes as it is a fairly common occurrence. Most of the time we think nothing of this phenomenon and the issue goes un-investigated, unnoticed or is dismissed quickly as we bustle about our busy lives. 

The issue of flickering lights is a complex and varied problems and there can be a vast number of causes for this issue ranging from minor causes to much more severe and dangerous underlying problems with the electrical installation. 

Throughout this article, we will cover a multitude of causes of flickering lights along with potential solutions to the problem. We will discuss when to intervene and when to call a professional and also answer many common internet search engine queries that are commonly asked by the public in order to attempt to address the issue of flickering lights. 

Flickering lights implies that there is a variation in perceived brightness or illumination from one or several lights sources. This can appear in different ways ranging from subtle variation at a barely perceptible level through to quick, pulsing fluctuations creating dramatic effect and without contestation that lights are flickering. 

As humans, we each have a different sensitivity to various stimuli and one person’s perception of a barely flickering light may vary widely with another’s. One person may notice the slight flickering of a light and another may not witness any change in illumination at all.

2) What kinds of issues?

2.1) Voltage related issues

Voltage is the electrical force that pushes electrical current along our electrical system against any resistances that are in the way. 

Electrical resistance is introduced immediately in a circuit in small amounts. Copper wiring presents little electrical resistance but with increasing length this increases. Too much resistance in an electrical circuit will affect the voltage and electrical current. 

Too much resistance will cause the voltage to drop drastically meaning that the operating voltage of the equipment may not be reached. Too little current will flow through the circuit and the light bulbs will not be able to operate as intended. This can result in flickering.

2.2) Light Bulb (lamp) Issues

Not all light bulbs are created equal. 

As with all products, there are more expensive items and cheaper items. The cheaper items often suffer with poor performance due to being manufactured from the cheapest possible materials and in the cheapest way with poor quality control in some instances. That is not to say that all cheap products are bad, some are very good quality and will perform perfectly fine. 

Light bulbs also occasionally wear out. Even the modern LED light bulbs we all use today will occasionally being to fail. During the period of failure before complete failure it is possible that these light bulbs will begin to flicker indicating that they are near to failure. 

Damage can occur to light bulbs through poor insertion into the lamp holder which may result in poor electrical connection between the contacts of the light bulb and the lamp holder. Perhaps one of the first things to check should be a new light bulb in the fixture if there is a flickering problem.

2.3) Loose Wiring

Loose wiring is a common problem and can often manifest as lights flickering. There does not always have to be loose wiring on the lights circuit itself for loose wiring to affect the lights themselves. Loose connections elsewhere in the system can result in flickering lights throughout the electrical system.

2.4) Overloaded circuits

When electrical circuits are under pressure with heavy electrical loads there can be a resultant voltage drop which can cause lights to flicker. As voltage drops below the normal operating voltage of the lights they will cease to function correctly.

The heavy electrical load does not need to be situated on the lighting circuit, other electrical circuits that are drawing a lot of electrical current or using a lot of power can result in voltage drop on the system as a whole. 

The effects of voltage drop are often more prevalent where an electrical system is far from a transformer of where an outbuilding is supplied at a distance from the main electrical system.

2.5) Dimmer Switches and compatibility

With the introduction of LED lighting occasionally comes the need for different dimmer switches than with typical incandescent lighting. 

There are two general types of dimmers and these are leading edge and trailing edge dimmers. 

A trailing edge dimmer is generally preferred when it comes to dimming LED lighting. The most important thing to remember with dimmer switches and compatibility is to check the manufacturer’s instructions for BOTH the dimmer AND the type of lamp or bulb that you are planning to use.

2.6) Faulty Light Fixtures / Transformers

Modern light fixtures such as LED bulkheads, LED strip lights and battens, fluorescent fixtures and low voltage lighting can have several different components in them which can begin to fail after time. Transformers, ballasts, and starters are typically contained in many modern light fittings and are all potential points of failure. 

More basic light fittings such as the simple pendant are unlikely to fail in the same way as they do not have the same components contained within the fitting. Faulty pendants are more likely to fail through loose connections, excessive strain caused by heavy shades and general mechanical damage. 

We can see the cord and wiring of a pendant in the photograph below. This is with the ceiling cover unscrewed for access to the wiring. 

(Ceiling rose portion of the pendant)

2.7) Faulty Switches

Occasionally light switches can go faulty causing poor connection and flickering lights as a result. Simple on off switches can develop internal issues. Despite their seemingly basic design, these switches have internal moving parts which wear against each other and can eventually fail.

The connections at the rear can also suffer overtightening, becoming loose or screws falling out resulting in poor electrical contact. Only a professional should check these things out for you.

2.8) External Influences

Anything external to the electrical system that affects the design or safe operation or likely operation of the system would be considered an external influence.

There are many external influences that can affect electrical systems and particularly lighting circuits as these are the more likely electrical circuits to venture beyond the interior of the building to the great outdoors. 

Weather, rodents, temperature changes, dust, mechanical damage, and thermal damage are all types of external influence that can change the way an electrical system works or not. Whilst these influences should be considered at the design stage of the electrical system, things can change throughout the life of an electrical system and flickering lights can result when these external influences take hold.

2.9) Temperature changes

Where temperature extremes exist and affect an electrical system, various issues can result following this. Loose connections from expansion and contraction, melting / thermal damage from general overheating, high resistances due to the heat and condensation forming due to suddenly changing temperatures.

The picture below shows an uninsulated wall in a property where hot air is forming and the dripping into the electrical plug socket beneath. The result of this was total power loss to the property due to the design of the electrical system. 

Once an electrical system has overheated, cables are often ruined and require replacement, overheated connections that make poor contact can cause lights to flicker and electrical equipment to operate intermittently or poorly in general.

Often, temperature extremes will see a general spike in electrical breakdowns as systems are forced to operate outside of their design parameters.

2.10) Weather / Moisture

Weather has a huge bearing on the effectiveness of electrical systems to perform. Cold, Hot, Wind, Rain, Snow, and Ice can all affect electrical systems in different way. Moisture can corrode connections on light fittings, cabling and electrical joints causing poor electrical connections or high resistances and resulting in lights starting to flicker. 

Whilst electrical equipment installed outdoors should be sufficiently rated for the weather, the installer plays a large part in the expected life span of that equipment and how well it will withstand the environment. 

Moisture is generally the number one enemy for electrical systems as not only will it cause complete failure should sufficient moisture ingress into the system but it will likely lead to electric shock hazard developing until the point of system failure. 

2.11) Rodents / Other animals

Rodents can have a detrimental effect on wiring systems as they seem to enjoy the flavour and feeling of nibbling PVC cabling. This leads to wiring failure, intermittent operation and in the case of lighting circuits – flickering lights until failure. We can see from the photograph below that rodents had been chewing on these electrical cables.

(Electrical Cables in a Loft / Attic that had been chewed by rodents)

Quite often there are no consequences to the rodent itself and many seem to escape unscathed by their antics. As emergency electricians, we seem to discover the evidence of chewing and nibbling yet no little bodies to indicate their demise! ☹

Other animals can unintentionally affect electrical systems with overzealous tails wagging, chewing, leaping onto electrical equipment not designed for such use and general animal behaviour. Where wiring systems are to be installed for the purposes of a livestock business then all these factors are considered and the electrical system is designed accordingly. 

Domestic properties are often the worst affected by animal mischief as the wiring systems and especially lights are not intended to be used as climbing frames for cats or dogs, sockets are not intended to suffer urination ingress or dog bowl spills and all of these things can end up causing flickering lights. 

3) Common types of flickering lights

There are different varieties of lamps and as such, when each flickers, there can be a different cause. 

3.1) Incandescent lamps

These types of lamps have a thin spiral type wire running through them which glows hot when an electrical current is passed through it. The lamps give off light as a result and also plenty of heat making them quite energy inefficient. When these lamps flicker, it is not as a result of some component failure as there is nothing other than a wire to fail. It is more likely that these lamps will flicker due to a loose connection on the electrical circuit or where the lamp connects into the fixture. 

Heavy equipment starting nearby such as electric motors, commercial or industrial equipment can cause a momentary flicker on these lamp due to a very brief period of voltage drop. 

3.2) Compact Fluorescent Lamps

These types of lamp commonly flicker and / or appear dim on start-up, when the temperature changes for the colder and when they need replacing. 

The Compact Fluorescent Lamp (CFL) will flicker as a result of a failing ballast or starter, components which are typically found in long tube style light fixtures. As a result of these various component failures these fittings are now typically replaced with LED light fixtures which light immediately, are generally brighter and more energy efficient per lumen of light. 

When CFLs are nearing the end of their life they make take several minutes to actually turn on, if they turn on at all. Many of us will have experienced the frustration of a fitting that lights an inch of the tube whilst the rest occasionally flickers refusing to commit to a full turn on! ☹

3.3) LED lights

Light Emitting Diode (LED) lights are the most modern form of energy efficient lighting but are not immune from problems. LEDs will flicker for a number of reasons:

• Poor power supply or cheap design resulting in visible flicker in line with supply frequency. LED lamps / bulbs only operate on Direct Current (DC) not Alternating Current (AC) as is this the case with our electrical supply. As a result, they only use half of the wave form that comes into our homes and there is a tiny gap between each piece of the wave they use to generate light. 
  This effect is more prevalent in LED lamps that have been manufactured to a budget and far less prevalent in those that are manufactured to a higher standard using better components and technology.
• Incompatible dimmer selection or LED selected is not dimmable. As discussed earlier on, there is a compatibility issue between many dimmers and LED lamps / bulbs and as such, careful selection is needed to ensure that these lamps are not affected by incompatibility. Flickering often results where these things are not intended to work together.
• Loose connections either on the electrical circuit OR on the light fixture / lamp insertion point. Loose connections create a high resistance and heat build-up. When there is a high resistance to electrical current flow, LED lamps / bulbs can sometimes not receive the supply they need to work properly. This can result in flickering lights. 

3.4) Fluorescent Tubes

These types of fluorescent fixtures have various components that can fail causing flickering. Ballasts, starters, electrodes on the lamp ends, and tubes can all require replacement meaning that the fixture will not work correctly and will flicker, partially light or not light at all! 

The tubes work by passing an electric current through the gas in the tube which causes the production of short-wave ultraviolet light. This light causes the phosphor coating on the tube to glow and produces the light that we actually see. 
There is a lot in the lighting up process to go wrong. When any component of these lamps beings to fail we can see flickering occurring for some time prior to complete failure.

4) Signs of serious problems

One of the major causes of flickering lights is a sign of serious problems with the electrical installation. Quite commonly, flickering lights are one of the first warning signs of issues within an electrical installation that otherwise would not show issues. 

• Fuse Box / Consumer Unit Failure – When components within a fuse box or consumer unit are on the brink of failure, flickering lights is a common symptom. Typical components that can fail within a consumer unit are: Main Switch, RCD device (Electric Shock Protection Device), Circuit Breaker Failure, Busbar or Neutral bar failure, Damage to Cables.
• Electric Meter failure – The electric meter sits before the consumer unit or fuse box and there are several electrical connections to the electric meter that can fail along with internal components that can go wrong. Flickering lights is a common symptom of issues with this equipment and its connections.
• Supply Equipment Failure – The first point of entry into your home is typically the supply cut-out which contains the Main Fuse for the whole electrical installation. These units also have internal connections which can work loose causing overheating and other problems. 
• Other circuit beginning to fail – Some lights in our homes are occasionally not powered by the ‘lights’ circuit. Commonly this is the case with additions to the home such as a conservatory where power is often drawn from a local electrical circuit and then ‘fuse down’ to supply the lighting in the conservatory or extension. When the main circuit begins to fail it can also then cause the lights to misbehave in this area of the property. 
• Damage to cables - Many different circumstances can affect cables causing absolute havoc in the wiring installation. We can see from the photograph below that these cables have been damaged by nails through floorboards. This could have been avoided during the wiring process had the cables been routed through the wooden joists rather than in a channel on the top!

5) Effects of flickering lights on well-being and health

5.1) General Health

Flickering lights can have a detrimental effect on our physical health causing eye strain, feeling of nausea and there is evidence that in some cases it can contribute to seizures. This type of problem with lighting is more likely to affect those in schools and workplaces rather than homes. These are environments where we are less likely to have control over the lighting, its maintenance and also where we spend a great deal of our daily time. Screen flickering from computers is also likely to contribute to the effects on our health. 

5.2) Mental Health Effects

Following on from the effects on general health, flickering lights may cause mental distress and induce anxiety in some individuals particularly where those individuals may be stuck unable to leave for long periods of time. 

5.3) Cognitive issues and productivity

Needless to say, the effects of these issues will most likely impact any workplace daily productivity, increase the chances of workplace absences, and decrease work output affecting overall productivity of the business or other activities that are being carried out in the environment. 

6) DIY troubleshooting

There are a couple of different checks that anyone could make in order to rule out some basic issues. We never recommend carrying out work on electrical systems or wiring unless you are a professional, qualified, and experienced electrician. 

• Check the lamps / bulbs and ensure they are fitting correctly into the light fixture. Ensure that they are of the right type and that they are seated correctly without any movement once inserted. 
• Check the compatibility of the light bulbs if using them with a dimmer type switch. There are dimmable and non-dimmable lamps / bulbs that are available on the market for purchase and the correct type must be used when intending to dim the lighting.
• Finally, visually inspect the light fixture for damage. Check around the lamp holders and ensure that everything appears to be in good condition and as the manufacture intended. Dirt and grime can become an issue with electrical connections particularly in areas such as kitchens and bathrooms. Do not attempt to clean an electrical fitting with anything wet or whilst the electricity supply is connected. 

Beyond these basic checks, if you still appear to have an issue with flickering lights then it is best to call an electrician to come and carry out some investigations for you. Whilst it may be tempting to save money and carry out further DIY checks, doing so is likely to create unnecessary and severe risks. 

6.1) Visually Checking light bulbs (lamps)

When checking your light bulbs, ensure that they are not hot before you touch them. Inspect them for damage particularly around the area where they insert into the lamp holder. Look for any signs of thermal damage or discolouration on the lamps themselves and listen out for any suspect rattling inside the bulbs. All of these signs could indicate the lamps / bulbs need replacing. 

6.2) Visually Inspecting Wiring

We would only advise visually checking wiring that is accessible and visible without the use of tools. Certain light fixtures have decorative cables on display that link from the ceiling to the light fixture and if these have become damaged then it may cause the lights to flicker in your home. Make sure that the power is off and do not touch the cables but rather visually inspect them. 

6.3) Visually Inspecting Luminaires

When inspecting the luminaire / light fixture, look for mechanical damage such as impact, cracking, and missing pieces. Check that there are no signs of thermal damage such as discolouration or blackening of the fitting and also check for any funny smells from around the light fitting.

Beyond these visual only inspections an electrician’s services must be employed in order to carry out further safety checks on the installation as interfering with electrical systems without knowledge, experience and the correct qualifications and tools can be lethal.

6.4) Visually Inspecting the fuse box / consumer unit switches

There may not be many visual clues to a damaged fuse box as a lot of damage can occur internally. DO NOT remove the cover of a fuse box or consumer unit as this is likely to lead to electric shock or injury. When visually inspecting a consumer unit or fuse box, only your eyes should be used! 

(A damaged Circuit Breaker found in a consumer unit)

Check for signs of melting, ill-fitting covers, and holes on the fuse box. These things are a sign that there could be further issues inside the consumer unit / fuse box. Any funny smells from around the fuse box / consumer unit can also indicate that there are other problems lurking inside. 

Beyond these visual inspections an electrician should by contacted to carry out any further checks as interfering with electrical equipment is likely to be dangerous unless you are a professional. 

7) Hiring a Professional Electrician

When to hire a professional? 

This is covered above but in many cases lots of home and business owners will not want to interfere with electricity in any capacity even to visually inspect accessories and that is absolutely fine. It is often best to use a professional for this type of work as electricity is a dangerous force and work carried out on electrical wiring and systems is a specialised area. You should hire a professional immediately if you suspect that the electrical installation is not safe, there are strange smells coming from the electrics or strange sounds. 

8) Preventing Flickering Lights

There are ways to prevent flickering lights in an electrical system such as:

• Regular professional maintenance and inspection
• Purchasing quality fixtures and lamps only
• Having equipment only installed by a professional
• Ensuring that external influences within your control and their effects on the wiring are minimised

Following the above steps will lead to an electrical system that is likely to last longer and perform at its optimum over its lifespan whilst minimising the risks of flickering lights and other electrical problems that can occur.

8.1) Electrical Maintenance

What kind of electrical maintenance can be carried out? 

When a professional comes to maintain an electrical system or its fixtures, they will perform visual checks on all the equipment and replace anything that is damaged or worn. They will look for potential hazards to the operation of the electrical system and either remove the hazards or inform you of the need to alter the environment such that the hazards are removed. 

Your professional may also carry out some form of testing on the fixtures and fittings to ensure that there is a good clean earth and to ensure that the electrical circuit will perform as intended and disconnect when there is an electrical fault. This is carried out in more depth under an electrical inspection.

8.2) Electrical Inspection

An electrical inspection is an in-depth electrical survey and test of electrical circuits (plug sockets circuit, lighting circuit, cooker circuit etc) along with the suitability and safety of the earthing at the electrical installations and various other checks on the system. 

We can see from the photograph below that this light fixture has been removed from the ceiling for further investigation during an electrical inspection. There was no indicated earth connection to the light fixture and as a result it was necessary to remove the fitting to check. 

The photograph shows that the green / yellow wire is actually connected but it is broken somewhere further back along the electrical circuit. This is an example of the type of issue that would be missed by a DIY light fitting installation but would be picked up by a good electrician! 😊

The inspection process can take a considerable time when carried out thoroughly. In homes the process is generally carried out over several hours in order to get a thorough picture of the condition of the electrical system. In businesses and workplaces there is often the requirement that the power is left on during the testing and as such, it is often not possible to carry out many of the safety tests resulting in a quicker but less thorough inspection. 

The resultant report produced from these inspections will outline any safety concerns, the condition of the wiring, the condition of the electrical system as a whole and any recommendations for improvement or remedial works that should be carried out immediately. 

An electrical inspection must be carried out by an experienced professional that understands the requirements of electrical testing, inspection and that can interpret the results correctly and compare with the expected results outlined in the wiring regulations. 

9) Common Misconceptions and Myths

If the lights are flickering then the installation needs to be rewired.

This is not necessarily or often true. There can be many causes for lights flickering as we have covered earlier in this article. The most likely scenario is that a professional electrician must be called in order to investigate the cause safely. Once the cause has been established then a quote to repair the problem can be produced and the installation repaired.

Flickering lights are dangerous.

Whilst flickering lights are not good, they are also not necessarily dangerous but the cause should be properly investigated without delay to rule out any potential danger.

The lights flicker because the wiring is old.

The age of the wiring is sometimes a cause of cable insulation breakdown, loose connections, and other problems but actually, the wiring itself being old is not often the cause. Correct diagnosis should be sought from a professional to determine the actual cause as more often than not, the problem is straightforward to fix (not necessarily cheap). 

10) Common Internet Search Terms and answers

What causes lights to flicker?

There are many causes for flickering lights. The cause depends greatly upon the type of flickering that is occurring. Generally, voltage drop in an electrical installation can cause lights to flicker or dim. Voltage drop is commonly seen when there is a large power demand within an electrical installation or a local temporary large power demand and this is witnessed by a momentary dimming of the lights. Not too dissimilar to headlights dimming on a vehicle when the starter motor operates to turn the engine over. 

Flickering lights can indicate that there are problems with the wiring, light fixture or connections and they can also be nothing to worry about. A flickering can indicate issues with switching such as dimmers and faulty switches.

Should I worry about flickering lights?

Whilst flickering lights are not always a cause for concern, the cause SHOULD be investigated and found where possible. Many causes of flickering lights are not immediately, potentially, or even slightly dangerous but there are a few causes that are a danger. 

Failing light fittings are a common cause that does not always introduce a danger but loose connections are a danger and should be fixed immediately. Both can cause flickering lights. 

Why do my house lights keep flickering UK?

There can be many causes of flickering lights in your UK home. If your house is situated far away from a local transformer then there can occasionally be voltage drop on the incoming supply sufficient to cause lights to momentarily flicker. 
If ALL the lights are flickering in the house, then this may suggest a problem with the incoming supply, the meter, or the mains box (consumer unit) in your home. If only SOME of the lights are flickering then this would suggest that there is an internal problem with the wiring in your home. 

If only ONE light is flickering then it is likely that there is an issue with that single light fixture rather than the electrical circuit for the lighting. 

If you are worried about the lights in your home flickering then it is best to have a professional investigate this for you to determine the cause. 

Why are my lights flickering but the breaker has not tripped?

We need to consider WHY breakers trip in the consumer unit to understand why flickering will not necessarily trip a breaker. 
The MCB (Miniature Circuit Breaker) and RCD (Residual Current Device) in the consumer unit are designed to trip when there is electrical overload, short circuit, and electrical current leaking to earth away from the installation. 

When lights flicker, this is often a result of voltage drop. Voltage levels are not generally measure by the consumer units in our homes as there is no commonly installed device that will do this hence, the breaker will not normally trip. 

A breaker will trip if there is a large electrical current surge but this will often be preceded by other symptoms.

Why are my lights suddenly flickering?

One light suddenly flickering can indicate that there is a problem with that particular light fitting. Simple pendant style lights that have no other components other than bulbs and wiring will generally flicker if there are loose connections in the light fitting itself or at the ceiling. 

Lights that have multiple components such as long tube lights, lights with transformers, modern LED strips and batten lights tend to have other electronic components within them that can fail. It is worth asking an electrician to come and investigate the problem for you to determine the cause and any potential dangers that may be lurking out of sight. 

Do flickering lights indicate an electrical problem?

In short YES. Under normal operation, lights should not flicker. Lights are not generally designed to flicker as this is incredibly irritating, not good for the light fitting itself and potentially detrimental to everyone’s health. 

If lights are flickering then there is generally an electrical issue with YOUR installation or that of the local supply. If the issue does not cease quickly then it’s a good idea to turn off all the lights at the fuse box / consumer unit and seek assistance from a professional. 

Why are only some lights flickering?

This would indicate that there is a problem on one electrical circuit only. It is common for the electrical system in our homes to be divided into many different ‘electrical circuits’ that supply various areas of the home separately. 

There will be a separate electrical circuit for plugs sockets, electric shower, electric vehicle charger, lights, and other electrics. In more modern homes, the lighting tends to be split such that there are two or more lighting circuits for the home. This is done so that in the event of a fault, complete loss of lighting is unlikely.

If only some of the lights are affected then it is likely to be an issue on that one lighting circuit. This could be a faulty switch in the consumer unit, loose connections at the consumer unit, loose connections on the electrical circuit in general or a loose wire at a light fitting creating havoc for all the affected lights.

Is a flickering light bulb dangerous?

This depends on the reason for the light bulb flickering. If the issue is due to loose connections, damage to the light fitting or bulb holder then yes, its potentially dangerous and should be rectified by a professional immediately. 

Lights flickering in house randomly?

When you have random lights flickering in the house and there is no obvious cause it can be difficult to pin down. This is especially true if the lights are flickering at random times with no apparent cause. 

The best course of action is to contact your local electrical fault-finding specialist to come and investigate this for you. Be prepared for them to find nothing or, at least, take a little while to reach a conclusion. The more intermittent an electrical fault is, the more difficult it can be to pin down the cause. 

Why do my lights flicker every night at the same time?

This would tend to indicate that there is an issue locally with heavy electrical equipment being switched on or off. Commonly, heavy electrical equipment can cause a disturbance in the level of voltage that is available to surrounding parts of the electrical network. 

Lights flickering in house after storm?

This matter should be investigated by a professional immediately. This would indicate that there may be some residual damage from a storm that has been inflicted upon the electrical installation. 

An electrician with the correct test equipment, time and patience should be able to get some answers for you to your light flickering problem. 

Storms can generate electrical surges which make their way into electrical installations and cause damage to wiring, consumer units, fuse boxes and other electrical equipment. 

How do you fix a loose light bulb?

The fix for a loose light bulb depends on the cause of the light bulb becoming loose. Many light bulbs can simply be screwed in a little more and this should resolve the problem where the light fitting is in good condition and there are also no issues with the light bulb. 

Where the light fitting or light bulb are damaged, they may not interact together as intended and it may be necessary to replace the light fitting and / or bulb in order to rectify the problem. 

Old light ceiling pendants commonly break through age and brittleness causing a light bulb not to sit correctly anymore in the bulb holder portion of the pendant. When this occurs, the repair is usually to swap the pendant or just the bulb holder where possible.

Do flickering lights mean power surge?

Not always. There are many reasons why lights may flicker and it is impossible to say for sure the exact reason the YOUR lights are flickering. It’s best to have a professional check the lights out for you if there are ongoing problems. 

Lights can flicker if:

• There are poor connections on the circuit or elsewhere
• There is heavy power use electrical equipment nearby
• The light fitting is failing
• There are supply problems
• The electrical system has been poorly designed and there is excessive voltage drop

How to fix flickering lights in house?

Why do my lights flicker at certain times?

Does a flickering light bulb mean its dying?

When should I be worried about flickering lights in my home?

You should worry if:

• The flickering is persistent
• There is a smell of burning

Unfortunately, as there are many causes of flickering lights and the causes range from safe to dangerous, it is impossible to say for sure if you should be worried. 

A professional electrician will be able to investigate the situation for you and come up with some answers. If the problem is intermittent or happened some time ago then it may be difficult to pinpoint the issue.















 

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