When people think about electronics that can be damaged by a power surge, televisions, computers and appliances are usually some of the first things that come to mind.
Light fixtures probably aren’t.
After storms moved through our area recently, we were called to a newer home where a number of lights had stopped working. These weren’t older fixtures that had gradually begun failing. They had been working normally before the storm.
We ultimately replaced seven integrated LED fixtures, along with multiple bulbs in other fixtures throughout the home.
Once the LED fixtures were removed, some of the damage was unusually easy to see.

Caption: Visible soot and melted plastic inside an LED fixture removed following a storm and suspected surge event.
In the fixture pictured above, soot had accumulated inside the clear cover and portions of the plastic had visibly melted. When the fixture was removed and turned over, there was additional heat damage at the wiring connections.

Caption: Heat damage on the back of the LED fixture extended to the wiring connections and wire connectors.
Based on the timing of the failures, the number of lights affected at once and the condition of the damaged fixtures, our electrician determined that a surge associated with the storm was the likely cause.
It also isn’t the first time we’ve encountered damaged LED lighting while working on homes following lightning and surge events. The damage isn’t always this dramatic or visible, but failed LED fixtures are something we’ve had to replace on a number of those calls.
And that highlights something homeowners may not realize: modern light fixtures can contain sensitive electronics too.
Modern LED Fixtures Are More Than a Bulb and a Socket
Traditional residential light fixtures were relatively simple. The fixture supplied power to a replaceable incandescent or halogen bulb, and most of what was responsible for actually producing the light was contained in the bulb itself.
Many modern LED fixtures work differently.
Integrated LED fixtures don’t use a conventional replaceable light bulb. Instead, the LEDs are built directly into the fixture along with electronic components that convert and regulate the incoming power so the LEDs can operate properly.
That design has plenty of advantages. Integrated LED fixtures can be thin, energy efficient and long-lasting.
It also means there’s more going on electronically inside your ceiling light than you might expect.
What Happens During a Power Surge?
A power surge is a sudden increase in voltage in an electrical system. Some transient voltage events originate outside the home, while others can originate within the electrical system as equipment switches on and off.
Storms and lightning can produce much larger electrical disturbances.
When excessive voltage reaches sensitive electronic components, it can damage components that weren’t designed to withstand it. Depending on the circumstances, that damage may cause something to fail immediately or may weaken components without producing an obvious failure right away.
And the evidence isn’t always as visible as it was in these fixtures.
Sometimes we remove a failed LED fixture following a surge event and find obvious heat damage. Other times, the fixture simply no longer works.
Why Several Things Failing at Once Matters
One light fixture failing doesn’t necessarily indicate a power surge.
LED fixtures can fail for a number of reasons, just as switches, receptacles, breakers and other electrical components can. Part of electrical troubleshooting is determining whether the device that stopped working is actually the source of the problem.
But when several lights or electronic devices suddenly fail around the same time, particularly during or immediately following a storm or known electrical event, that becomes useful information.
In this case, seven integrated LED fixtures and multiple conventional light bulbs were affected.
That’s very different from one fixture reaching the end of its service life.
When we’re troubleshooting electrical problems after a storm, the number and type of devices affected can help us understand whether we’re looking at several unrelated failures or the effects of a larger event involving the home’s electrical system.
Surge Damage Isn’t Limited to TVs and Computers
Modern homes contain considerably more electronics than they did several decades ago.
Some are obvious: televisions, computers, gaming systems and other electronics plugged into receptacles.
Others aren’t necessarily things homeowners think of as electronic equipment.
LED lighting, HVAC equipment, appliances, smart switches, controls and numerous other devices can contain electronic components. Even equipment that seems relatively simple from the outside may have circuit boards or electronic controls inside.
That means protecting a modern home’s electronics involves considerably more than putting a surge strip under the computer desk.
The LED fixtures in these photos were hardwired directly into the home’s electrical system. A plug-in surge protector wouldn’t have provided any protection for them.
Where Whole-Home Surge Protection Comes In
A whole-home surge protective device is installed at the electrical service or panel and is designed to help limit transient overvoltages before they travel farther through the home’s electrical system.
This is also why surge protection has become part of modern electrical code requirements for dwelling-unit services.
Whole-home surge protection isn’t an impenetrable shield, and no surge protective device can guarantee that equipment won’t be damaged during every possible electrical event. A nearby or direct lightning event, for example, can involve enormous amounts of energy.
The purpose of surge protection is to reduce exposure to damaging transient voltage and provide another layer of protection for the electrical and electronic equipment throughout the home.
That’s an important distinction. We don’t think it’s useful to tell homeowners that installing one device makes their house “lightning proof.” It doesn’t.
But that doesn’t mean surge protection isn’t valuable.
Surge Protection Can Be Layered
Whole-home and point-of-use surge protection don’t necessarily serve as substitutes for one another. They can work as different layers of protection.
A whole-home surge protective device provides protection at the electrical-system level. Quality point-of-use surge protectors can provide another layer near sensitive equipment plugged into receptacles.
There can also be other pathways into electronic equipment. Data, communication and other low-voltage cabling may require their own appropriate surge protection where protection is needed.
The appropriate approach depends on the home and the equipment being protected.
What Should You Do After a Storm if Electrical Equipment Stops Working?
If a single light doesn’t work, the problem may be as simple as a failed bulb or fixture.
If multiple lights, appliances or electronic devices suddenly stop working after a storm, however, make note of everything that was affected.
That information can be extremely helpful when an electrician begins troubleshooting.
You may notice that several lights stopped working, a GFCI won’t reset, an appliance behaves differently, electronics rebooted during the storm, or breakers tripped. Those symptoms don’t automatically prove that a surge occurred, but together they can provide useful clues about what happened.
And if there is visible melting, scorching, an electrical burning odor or other evidence of heat damage, the affected equipment should be evaluated rather than simply turned back on to see what happens.
Modern Homes Have Electronics in Places You May Not Expect
The fixtures we removed from this home are a particularly visible example of something we encounter regularly in modern electrical systems.
A ceiling light doesn’t necessarily consist of a socket, a couple of wires and a replaceable bulb anymore. It may contain electronic components of its own.
That’s true of more and more equipment throughout today’s homes.
Surge protection can’t guarantee that nothing will ever be damaged, particularly during severe electrical events. What it can do is provide an important layer of protection by limiting transient overvoltages before they reach equipment throughout the electrical system.
So when we talk about protecting a home’s electronics from power surges, we’re talking about considerably more than televisions and computers.
Sometimes we’re talking about the lights over your head, too.
Frequently Asked Questions About Power Surges and LED Lighting
Can a power surge damage LED light fixtures?
Yes. Modern LED fixtures contain electronic components that can be damaged by transient overvoltage. Depending on the severity of the event, the fixture may stop working immediately, suffer visible heat damage, or fail without obvious external signs of damage.
Why are LED lights vulnerable to power surges?
Integrated LED fixtures contain electronic components that convert and regulate incoming power for the LEDs. Unlike a traditional fixture with a simple socket and replaceable bulb, those electronics are built into the fixture itself and can be affected by abnormal voltage.
How can I tell if a power surge damaged my lights?
A failed light by itself doesn’t necessarily indicate surge damage. However, multiple lights or electronic devices failing at approximately the same time, particularly during or after a storm or other electrical event, can be an important clue. Visible scorching, melting or other heat damage may also be present, although surge damage isn’t always visible.
Can a power surge damage a light fixture without tripping the breaker?
Yes. A circuit breaker primarily protects the circuit conductors from excessive current caused by conditions such as overloads and short circuits. A brief voltage transient can damage sensitive electronics without creating the sustained overcurrent condition necessary to trip a standard circuit breaker.
Will a whole-home surge protector prevent all surge damage?
No. A whole-home surge protective device is designed to limit transient overvoltages, reducing the amount of surge energy that travels farther into the home’s electrical system. It provides an important layer of protection, but no surge protective device can guarantee that equipment will survive every possible electrical event, particularly severe lightning events.
Does a plug-in surge protector protect hardwired LED fixtures?
No. A plug-in surge protector only provides protection for equipment connected through that device. Hardwired equipment such as integrated ceiling fixtures isn’t connected through a plug-in surge protector. Whole-home surge protection provides protection at the electrical-system level and can therefore help protect hardwired equipment as well.
Should I call an electrician if several lights stop working after a storm?
If multiple lights, fixtures, appliances or other electrical devices stop working following a storm, having the electrical system evaluated is a good idea. Tell the electrician everything you noticed, even if some of the symptoms seem unrelated. The pattern of failures can provide useful information when determining what happened.
Do damaged integrated LED fixtures have to be replaced?
Often, yes. Unlike a traditional fixture where a failed bulb can simply be replaced, the LEDs and associated electronics in an integrated fixture are part of the fixture itself. Whether an individual component can be serviced depends on the fixture’s design, but residential integrated LED fixtures are commonly replaced when their internal electronics fail.
DeGraaf Electrical Service provides electrical troubleshooting, repairs and whole-home surge protection throughout Pace, Milton, Pensacola and surrounding Northwest Florida communities. We are insured and operate under Florida Electrical Contractor License #EC13010255.














