What exactly is the difference between a surge protector and a fuse? Can a fuse protect the electronic devices from lightning instead of surge protector?
Last Updated: 17.06.2025 09:33

There are three different concepts here that are getting confused.
It also is a device that limits the change in current flow.
Lightning arrestor is a spark-gap device, and can be installed anywhere. What is important, is that the wire is thick enough to withstand the lightning bolt and conduct the energy away from the building.
Who writes and reads novels nowadays?
At the secondary, it is 1000 times less.)turns ratio). If it gets hit with a 100,000 volt bolt of lightning then the voltage arrestors conduct and clamp the voltage down to line voltage, ( but a small amount leaks down the line). This is the problem.
First Sentence:
so, what happens?
How will the article end in Part III of Gleissner's hit piece?
(There is no concept of polarity, in the loop because the current changes direction 100 to 120 times a second (power frequency).
So, it’s possible that these devices from Trip Lite have addition suppression devices, these ones seem to be sturdy.
If the nominal power is 4,000 watts then the current at 230volts is 16 amps.
What is your review of Kota Factory Season 3 (TVF Original)?
2024–10–14 [Omar Gharbi Omar Gharbi ]
[old diagram got deleted by accident]
The MOV will conduct when the voltage exceeds 50% of line voltage.
George, Charlotte ,and Louis Are the Royal Family’s Salvation - The Daily Beast
For this case there are devices called Metal oxide varistors (MOV).
Edit 2024–10.
2024–10–16 [ OO OLAOYE OYEBODE ]
Why is digital marketing important?
In schematic diagrams this is the symbol for a fuse:
(Dc diagram shown, AC is similar).
But… the neutral is now “floating” because of the 1 ohm resistance.
Fighters react to Kamaru Usman's rebound win vs. Joaquin Buckley at UFC on ESPN 69 - MMA Junkie
This is a high voltage low current spike that comes down the line because of the power poles being struck, and the voltage suppressors activating on the primary side of the transformer.
[image of Common-mode choke]
Here is a simplified AC power diagram.
What are the pros and cons of a prospective bride/groom not having any siblings?
Now when you have a certain ac resistance, then a current flows in a loop.
the problem then depends on "how fast does the fuse operate?".
A circuit breaker is similar, but is resettable.
The third is lightning and “how it gets conducted into a home.”
What does a fuse do?
The bolt then partially travels down the line to your home.
2024–10–10[John johnson John Johnson ]
“ A fuse is a device which protects the (circuit) against overload and short circuit.”
This is where the MOV conducts again, and dissipated the energy.
What is your twin flame story?
So, the voltage could go up to 500 volts, and the fuse will not open up.
These are simplified answers to the original question, and does not change anything I wrote above.
2024–10–11 [Bobby Sanchez Bobby Sanchez ].
Have you ever really seen aliens or UFOs by yourself? Can you share your experience?
This is an electronic circuit designed to clamp voltages so that the Voltage Potential that appears at the outlet is never going to exceed the nominal value.
This is 'the assistant's answer'
But it can get overloaded, and no longer works.
What was your best revenge story?
but I think this circuit , shows a few more pieces.
One is “what exactly is in a ‘surge protector’ ? ”
This one hit behind the barn.
Why do narcissists avoid talking about the real issues?
There are two important concepts here.
It’s been three xxx five werks, and there has been no response to my follow on query on his Commment to my answer.
At least they know the answer if they wanted it.
These devices are installed between the “hot” and “neutral” and protective ground.
It seems Mohan does not understand the difference between a comment and an Answer.
He then describes the function of a fuse.
What is your opinion on the band Nickelback? Why do they receive criticism from some people?
“ A surge suppressor is the one which is connected at the input supply so that when there is a sudden change voltage it bypasses thereby protecting the (circuit) and electronic components”
I post the exact comment here.
An AC voltage/ current source, and an ac inductive load.
He then asserts :
This is the picture of an electronic coil of wire wound around a core of magnetic material.
What is lightning?
But during the surge, the fuse will not blow if it is a longer duration and lower value )10 to 50%).
Barnstars:
Can the fuse protect the electronic devices from lightning instead of a surge protector.
“ … to protect building, lightning arrestor, is provided above building and directly connected to earth.”
So combined with a device called a MOV or Metal-oxide-resistor, then forms the 3rd part of a “surge suppressor “.
And this is the problem alone. Is the power supply in the equipmemt designed with a lightning strike in mind? Some yes, others, no.
2024–09–27 [ Mohan Rajaratnam Mohan Rajaratnam ] . Thinks you can get free electricity from nothing : Mohan Rajaratnam's answer to Is it possible to generate free electricity at home using a magnet or other low-cost methods? If so, how does it work?
This device then solves the entire problem.
Once the voltage goes over 0.0650 volts, then this fact can be used to amplify the difference, and turn the circuit breaker off , furthur down the line. Essentially that is what a RCD/GFCI does, it compares the incoming current, to the outgoing current, and if the difference between the two currents is over 5mA, then it trips the circuit breaker.
Mohan forgets that a fuse is a one-time device, and needs to be replaced if it is tripped.
When the current is 200% of the rated value , it will “go open” (the link metal melts) and protect the device.
2024–10–00 [ Ammar Mahdi ] Ammar Mahdi
Upvotes:
but this device (an Inductor) … impedes the rapid changes in the current.
Fuses, on their own, then operate much slower than the MOV variable resistance, during the lightning strike.
The other is “what does a “fuse” do?”
a photo is worth a thousand words.
Would individual surge supressors have save this equipment? most likely, since the surge supressor would take the jolt instead of the electronic components.
eight
so, the loop of wire then, when put together with another loop reduces the ‘noise’ on a power line.
nine
Is the question then , "why buy a surge supressor, if the fuse alone protects the electronic circuits from a lightning bolt?".
what exactly is a ‘surge’ protector?
P = e* I, so since I is 16 amps, then the voltage dropped is 1/16 volt or 0.0650 volts.
A fuse is a non-resetable over current circuit protector.
At one ohm, the resistor has a maximum of 1 watt power.
This is a photo where a lightning bolt took out a home's complete mains distribution box, and a lot of electronic gear as well.
One
There is no harm in having the surge suppressor along with the fuse in the circuit. The fuse will not open up until the current melts the link. This will take time, and in the interim, that jolt will get transmitted into the power supplies.
Because the load is inductive, the current lags the voltage.(by a bit).
This is where this question deviates from being a 'generic' question, and becomes more specific.
2024–10–11 [Victor Olarewsju Victor Olarewaju ]
OK, this is Mohan Rajaratnam’s definition of a Surge suppressor.
He then describes Rainy Season and Lightning.