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: 25.06.2025 16:26

He then asserts :
eight
2024–10–00 [ Ammar Mahdi ] Ammar Mahdi
Jennie Garth 'Never Felt More Confident' as She Poses In First Underwear Photoshoot at 53 - TooFab
These are simplified answers to the original question, and does not change anything I wrote above.
Is the question then , "why buy a surge supressor, if the fuse alone protects the electronic circuits from a lightning bolt?".
This device then solves the entire problem.
If atheists are so positive that there is no God, where is their proof that He does not exist?
nine
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?
These devices are installed between the “hot” and “neutral” and protective ground.
South Africa’s emotional WTC triumph: Proteas win first major cricket trophy in 27 years - AP News
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.
This is the picture of an electronic coil of wire wound around a core of magnetic material.
Fuses, on their own, then operate much slower than the MOV variable resistance, during the lightning strike.
The Director Of Final Fantasy Tactics Gets Political - Kotaku
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.
2024–10–10[John johnson John Johnson ]
2024–10–11 [Victor Olarewsju Victor Olarewaju ]
10-year Treasury yield rises ahead of key jobs report - CNBC
[old diagram got deleted by accident]
the problem then depends on "how fast does the fuse operate?".
What is lightning?
Something Deep in Our Galaxy Is Pulsing Every 44 Minutes. No One Knows Why. - AOL.com
If the nominal power is 4,000 watts then the current at 230volts is 16 amps.
In schematic diagrams this is the symbol for a fuse:
Can the fuse protect the electronic devices from lightning instead of a surge protector.
This is 'the assistant's answer'
“ 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”
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.
How does a new KDP writer supposed to market a book?
He then describes Rainy Season and Lightning.
(Dc diagram shown, AC is similar).
It’s been three xxx five werks, and there has been no response to my follow on query on his Commment to my answer.
WWE Raw GM Adam Pearce Announces Final Entrant In KOTR Tournament Match - Wrestling Inc.
what exactly is a ‘surge’ protector?
2024–10–16 [ OO OLAOYE OYEBODE ]
“ … to protect building, lightning arrestor, is provided above building and directly connected to earth.”
What are the gifts you got when you cleared JEE ?
This one hit behind the barn.
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.
but this device (an Inductor) … impedes the rapid changes in the current.
For this case there are devices called Metal oxide varistors (MOV).
So, the voltage could go up to 500 volts, and the fuse will not open up.
2024–10–14 [Omar Gharbi Omar Gharbi ]
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.
Edit 2024–10.
First Sentence:
so, the loop of wire then, when put together with another loop reduces the ‘noise’ on a power line.
Would individual surge supressors have save this equipment? most likely, since the surge supressor would take the jolt instead of the electronic components.
but I think this circuit , shows a few more pieces.
Because the load is inductive, the current lags the voltage.(by a bit).
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.
A fuse is a non-resetable over current circuit protector.
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.
Barnstars:
At one ohm, the resistor has a maximum of 1 watt power.
(There is no concept of polarity, in the loop because the current changes direction 100 to 120 times a second (power frequency).
At least they know the answer if they wanted it.
The MOV will conduct when the voltage exceeds 50% of line voltage.
He then describes the function of a fuse.
There are two important concepts here.
And this is the problem alone. Is the power supply in the equipmemt designed with a lightning strike in mind? Some yes, others, no.
A circuit breaker is similar, but is resettable.
But… the neutral is now “floating” because of the 1 ohm resistance.
I post the exact comment here.
It also is a device that limits the change in current flow.
Now when you have a certain ac resistance, then a current flows in a loop.
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.
One
So combined with a device called a MOV or Metal-oxide-resistor, then forms the 3rd part of a “surge suppressor “.
“ A fuse is a device which protects the (circuit) against overload and short circuit.”
2024–10–11 [Bobby Sanchez Bobby Sanchez ].
Upvotes:
It seems Mohan does not understand the difference between a comment and an Answer.
One is “what exactly is in a ‘surge protector’ ? ”
What does a fuse do?
[image of Common-mode choke]
This is where the MOV conducts again, and dissipated the energy.
When the current is 200% of the rated value , it will “go open” (the link metal melts) and protect the device.
But it can get overloaded, and no longer works.
The other is “what does a “fuse” do?”
The bolt then partially travels down the line to your home.
a photo is worth a thousand words.
Mohan forgets that a fuse is a one-time device, and needs to be replaced if it is tripped.
Here is a simplified AC power diagram.
OK, this is Mohan Rajaratnam’s definition of a Surge suppressor.
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 where this question deviates from being a 'generic' question, and becomes more specific.
The third is lightning and “how it gets conducted into a home.”
So, it’s possible that these devices from Trip Lite have addition suppression devices, these ones seem to be sturdy.
An AC voltage/ current source, and an ac inductive load.