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: 02.07.2025 02:44

Would individual surge supressors have save this equipment? most likely, since the surge supressor would take the jolt instead of the electronic components.
At least they know the answer if they wanted it.
P = e* I, so since I is 16 amps, then the voltage dropped is 1/16 volt or 0.0650 volts.
Walk your way to a sharper mind: How 40 minutes of walking boosts brain size - Times of India
so, what happens?
2024–10–10[John johnson John Johnson ]
“ A fuse is a device which protects the (circuit) against overload and short circuit.”
So combined with a device called a MOV or Metal-oxide-resistor, then forms the 3rd part of a “surge suppressor “.
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.
The other is “what does a “fuse” do?”
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?
The MOV will conduct when the voltage exceeds 50% of line voltage.
eight
What are some fun/kinky things to do with your partner?
Can the fuse protect the electronic devices from lightning instead of a surge protector.
Now when you have a certain ac resistance, then a current flows in a loop.
but I think this circuit , shows a few more pieces.
Cosmic rings reveal new planet being born | Space photo of the day for June 11, 2025 - Space
2024–10–16 [ OO OLAOYE OYEBODE ]
For this case there are devices called Metal oxide varistors (MOV).
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.
Why did the UK Supreme Court rule that transgender women are not women?
The bolt then partially travels down the line to your home.
One is “what exactly is in a ‘surge protector’ ? ”
OK, this is Mohan Rajaratnam’s definition of a Surge suppressor.
Scientists Unveil a Method to Give Every Human the Ability to See in the Dark - The Daily Galaxy
“ 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”
So, it’s possible that these devices from Trip Lite have addition suppression devices, these ones seem to be sturdy.
A circuit breaker is similar, but is resettable.
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.
This is the picture of an electronic coil of wire wound around a core of magnetic material.
This device then solves the entire problem.
What are the most important skills a fine artist should develop in today's art world?
First Sentence:
It seems Mohan does not understand the difference between a comment and an Answer.
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.
IndiGo, Delta, Air France-KLM, Virgin Atlantic Announce Partnership - Airways Magazine
It’s been three xxx five werks, and there has been no response to my follow on query on his Commment to my answer.
Is the question then , "why buy a surge supressor, if the fuse alone protects the electronic circuits from a lightning bolt?".
The third is lightning and “how it gets conducted into a home.”
Why do Democrats never produce a good argument for why Trump was a bad president?
Upvotes:
These devices are installed between the “hot” and “neutral” and protective ground.
2024–10–00 [ Ammar Mahdi ] Ammar Mahdi
This is where this question deviates from being a 'generic' question, and becomes more specific.
An AC voltage/ current source, and an ac inductive load.
“ … to protect building, lightning arrestor, is provided above building and directly connected to earth.”
what exactly is a ‘surge’ protector?
This is 'the assistant's answer'
But… the neutral is now “floating” because of the 1 ohm resistance.
He then asserts :
2024–10–11 [Bobby Sanchez Bobby Sanchez ].
There are two important concepts here.
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.
A fuse is a non-resetable over current circuit protector.
When the current is 200% of the rated value , it will “go open” (the link metal melts) and protect the device.
If the nominal power is 4,000 watts then the current at 230volts is 16 amps.
He then describes Rainy Season and Lightning.
So, the voltage could go up to 500 volts, and the fuse will not open up.
[old diagram got deleted by accident]
2024–10–14 [Omar Gharbi Omar Gharbi ]
But it can get overloaded, and no longer works.
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.
These are simplified answers to the original question, and does not change anything I wrote above.
At one ohm, the resistor has a maximum of 1 watt power.
Mohan forgets that a fuse is a one-time device, and needs to be replaced if it is tripped.
2024–10–11 [Victor Olarewsju Victor Olarewaju ]
the problem then depends on "how fast does the fuse operate?".
Because the load is inductive, the current lags the voltage.(by a bit).
[image of Common-mode choke]
And this is the problem alone. Is the power supply in the equipmemt designed with a lightning strike in mind? Some yes, others, no.
so, the loop of wire then, when put together with another loop reduces the ‘noise’ on a power line.
It also is a device that limits the change in current flow.
a photo is worth a thousand words.
Edit 2024–10.
I post the exact comment here.
nine
What is lightning?
but this device (an Inductor) … impedes the rapid changes in the current.
This one hit behind the barn.
Here is a simplified AC power diagram.
One
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 does a fuse do?
But during the surge, the fuse will not blow if it is a longer duration and lower value )10 to 50%).
There are three different concepts here that are getting confused.
In schematic diagrams this is the symbol for a fuse:
Barnstars:
(There is no concept of polarity, in the loop because the current changes direction 100 to 120 times a second (power frequency).
He then describes the function of a fuse.
(Dc diagram shown, AC is similar).
Fuses, on their own, then operate much slower than the MOV variable resistance, during the lightning strike.
This is where the MOV conducts again, and dissipated the energy.