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?
16.06.2025 00:38

what exactly is a ‘surge’ protector?
“ … to protect building, lightning arrestor, is provided above building and directly connected to earth.”
a photo is worth a thousand words.
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.
OK, this is Mohan Rajaratnam’s definition of a Surge suppressor.
(There is no concept of polarity, in the loop because the current changes direction 100 to 120 times a second (power frequency).
Why are Republicans such intolerant people?
This device then solves the entire problem.
but this device (an Inductor) … impedes the rapid changes in the current.
Because the load is inductive, the current lags the voltage.(by a bit).
Do foreign workers face discrimination in Canada?
Is the question then , "why buy a surge supressor, if the fuse alone protects the electronic circuits from a lightning bolt?".
I post the exact comment here.
The other is “what does a “fuse” do?”
What does the stink of the skunk look like? Why would it be dangerous?
“ A fuse is a device which protects the (circuit) against overload and short circuit.”
An AC voltage/ current source, and an ac inductive load.
2024–10–00 [ Ammar Mahdi ] Ammar Mahdi
How do you get a girl to like you?
First Sentence:
In schematic diagrams this is the symbol for a fuse:
but I think this circuit , shows a few more pieces.
Do snipers lay on top of tank turrets during combat?
Fuses, on their own, then operate much slower than the MOV variable resistance, during the lightning strike.
2024–10–10[John johnson John Johnson ]
2024–10–11 [Victor Olarewsju Victor Olarewaju ]
What’s a mistake most guys make when trying to get a girlfriend?
so, what happens?
2024–10–16 [ OO OLAOYE OYEBODE ]
When the current is 200% of the rated value , it will “go open” (the link metal melts) and protect the device.
How do police officers feel about the fear they instill into criminals?
So combined with a device called a MOV or Metal-oxide-resistor, then forms the 3rd part of a “surge suppressor “.
This is 'the assistant's answer'
Barnstars:
What is the meaning of "ero" in Japanese?
There are three different concepts here that are getting confused.
P = e* I, so since I is 16 amps, then the voltage dropped is 1/16 volt or 0.0650 volts.
These are simplified answers to the original question, and does not change anything I wrote above.
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.
What is lightning?
But… the neutral is now “floating” because of the 1 ohm resistance.
Kate Middleton and Princess Charlotte Opt for Aquamarine for Trooping the Colour 2025 - Vogue
[old diagram got deleted by accident]
“ 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”
(Dc diagram shown, AC is similar).
Is it sinful for Christians to look at beautiful women?
But during the surge, the fuse will not blow if it is a longer duration and lower value )10 to 50%).
eight
At one ohm, the resistor has a maximum of 1 watt power.
My blog is new. I need 10 article posts for my blog. How much should I pay for it?
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.
These devices are installed between the “hot” and “neutral” and protective ground.
The third is lightning and “how it gets conducted into a home.”
[image of Common-mode choke]
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.
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.
Why would Trump make conspiracy claims that Haitians are eating pets in Ohio?
2024–10–14 [Omar Gharbi Omar Gharbi ]
He then asserts :
This is where the MOV conducts again, and dissipated the energy.
But it can get overloaded, and no longer works.
Upvotes:
And this is the problem alone. Is the power supply in the equipmemt designed with a lightning strike in mind? Some yes, others, no.
This is the picture of an electronic coil of wire wound around a core of magnetic material.
The bolt then partially travels down the line to your home.
What does a fuse do?
2024–10–11 [Bobby Sanchez Bobby Sanchez ].
A fuse is a non-resetable over current circuit protector.
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?
For this case there are devices called Metal oxide varistors (MOV).
This one hit behind the barn.
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.
Now when you have a certain ac resistance, then a current flows in a loop.
Can the fuse protect the electronic devices from lightning instead of a surge protector.
It’s been three xxx five werks, and there has been no response to my follow on query on his Commment to my answer.
so, the loop of wire then, when put together with another loop reduces the ‘noise’ on a power line.
the problem then depends on "how fast does the fuse operate?".
It also is a device that limits the change in current flow.
Would individual surge supressors have save this equipment? most likely, since the surge supressor would take the jolt instead of the electronic components.
Mohan forgets that a fuse is a one-time device, and needs to be replaced if it is tripped.
There are two important concepts here.
nine
A circuit breaker is similar, but is resettable.
One
It seems Mohan does not understand the difference between a comment and an Answer.
He then describes the function of a fuse.
At least they know the answer if they wanted it.
Here is a simplified AC power diagram.
This is where this question deviates from being a 'generic' question, and becomes more specific.
One is “what exactly is in a ‘surge protector’ ? ”
The MOV will conduct when the voltage exceeds 50% of line voltage.
If the nominal power is 4,000 watts then the current at 230volts is 16 amps.
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.
He then describes Rainy Season and Lightning.
So, it’s possible that these devices from Trip Lite have addition suppression devices, these ones seem to be sturdy.
So, the voltage could go up to 500 volts, and the fuse will not open up.
Edit 2024–10.