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: 26.06.2025 10:11

so, the loop of wire then, when put together with another loop reduces the ‘noise’ on a power line.
What is lightning?
This is 'the assistant's answer'
The MOV will conduct when the voltage exceeds 50% of line voltage.
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?
Cholesterol: Daily cup of beans may lower levels, improve heart health - MedicalNewsToday
Barnstars:
Would individual surge supressors have save this equipment? most likely, since the surge supressor would take the jolt instead of the electronic components.
So combined with a device called a MOV or Metal-oxide-resistor, then forms the 3rd part of a “surge suppressor “.
Now when you have a certain ac resistance, then a current flows in a loop.
One is “what exactly is in a ‘surge protector’ ? ”
It seems Mohan does not understand the difference between a comment and an Answer.
Video: Street Fighter 6 Showcases Four New Character Outfits - Nintendo Life
[image of Common-mode choke]
What does a fuse do?
Edit 2024–10.
Resident Evil Requiem: Release Date, Gameplay, And Everything We Know So Far - GameSpot
A circuit breaker is similar, but is resettable.
These devices are installed between the “hot” and “neutral” and protective ground.
2024–10–11 [Bobby Sanchez Bobby Sanchez ].
Why You Should Stop Texting On Your iPhone Or Android Phone - Forbes
He then asserts :
(There is no concept of polarity, in the loop because the current changes direction 100 to 120 times a second (power frequency).
There are two important concepts here.
Why are Boomers so vehemently opposed to student loan forgiveness?
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.
“ … to protect building, lightning arrestor, is provided above building and directly connected to earth.”
nine
Why U.S. bull market for stocks is still intact, according to this strategist - MarketWatch
It also is a device that limits the change in current flow.
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?
One
This device then solves the entire problem.
So, the voltage could go up to 500 volts, and the fuse will not open up.
But it can get overloaded, and no longer works.
Trump Media Raises $2.32B—Bitcoin Treasury and Big Moves Ahead - Bitcoin.com News
He then describes Rainy Season and Lightning.
(Dc diagram shown, AC is similar).
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.
What are some interests in sharing pictures of wives?
First Sentence:
It’s been three xxx five werks, and there has been no response to my follow on query on his Commment to my answer.
Mohan forgets that a fuse is a one-time device, and needs to be replaced if it is tripped.
This is where the MOV conducts again, and dissipated the energy.
the problem then depends on "how fast does the fuse operate?".
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.
Upvotes:
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.
Adam Scott, nearly 45 years old, with chance to redefine career on U.S. Open Sunday - NBC Sports
When the current is 200% of the rated value , it will “go open” (the link metal melts) and protect the device.
This is the picture of an electronic coil of wire wound around a core of magnetic material.
A fuse is a non-resetable over current circuit protector.
Can the fuse protect the electronic devices from lightning instead of a surge protector.
In schematic diagrams this is the symbol for a fuse:
2024–10–11 [Victor Olarewsju Victor Olarewaju ]
At one ohm, the resistor has a maximum of 1 watt power.
And this is the problem alone. Is the power supply in the equipmemt designed with a lightning strike in mind? Some yes, others, no.
Fuses, on their own, then operate much slower than the MOV variable resistance, during the lightning strike.
but I think this circuit , shows a few more pieces.
I post the exact comment here.
There are three different concepts here that are getting confused.
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.
Here is a simplified AC power diagram.
But… the neutral is now “floating” because of the 1 ohm resistance.
An AC voltage/ current source, and an ac inductive load.
The third is lightning and “how it gets conducted into a home.”
He then describes the function of a fuse.
“ 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”
At least they know the answer if they wanted it.
2024–10–16 [ OO OLAOYE OYEBODE ]
These are simplified answers to the original question, and does not change anything I wrote above.
For this case there are devices called Metal oxide varistors (MOV).
But during the surge, the fuse will not blow if it is a longer duration and lower value )10 to 50%).
so, what happens?
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.
P = e* I, so since I is 16 amps, then the voltage dropped is 1/16 volt or 0.0650 volts.
The other is “what does a “fuse” do?”
The bolt then partially travels down the line to your home.
This is where this question deviates from being a 'generic' question, and becomes more specific.
a photo is worth a thousand words.
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.
but this device (an Inductor) … impedes the rapid changes in the current.
This one hit behind the barn.
OK, this is Mohan Rajaratnam’s definition of a Surge suppressor.
2024–10–10[John johnson John Johnson ]
eight
2024–10–14 [Omar Gharbi Omar Gharbi ]
Because the load is inductive, the current lags the voltage.(by a bit).
[old diagram got deleted by accident]
2024–10–00 [ Ammar Mahdi ] Ammar Mahdi
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.
“ A fuse is a device which protects the (circuit) against overload and short circuit.”