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: 28.06.2025 06:11
There are two important concepts here.
a photo is worth a thousand words.
“ 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”
John Brenkus, host of Emmy-winning ‘Sport Science’ on ESPN, died by suicide - New York Post
2024–10–00 [ Ammar Mahdi ] Ammar Mahdi
It also is a device that limits the change in current flow.
The third is lightning and “how it gets conducted into a home.”
Are Hailee Steinfeld & Josh Allen getting married on May 31? - Buffalo Rumblings
Mohan forgets that a fuse is a one-time device, and needs to be replaced if it is tripped.
the problem then depends on "how fast does the fuse operate?".
These are simplified answers to the original question, and does not change anything I wrote above.
Xbox Building A Handheld 'Makes No Sense', Says Former Blizzard Boss - Pure Xbox
These devices are installed between the “hot” and “neutral” and protective ground.
2024–10–16 [ OO OLAOYE OYEBODE ]
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.
Repellat quod recusandae rerum adipisci deleniti.
First Sentence:
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.
(Dc diagram shown, AC is similar).
so, what happens?
This is where the MOV conducts again, and dissipated the energy.
The bolt then partially travels down the line to your home.
How is sex in college like with roommates and big campuses?
At one ohm, the resistor has a maximum of 1 watt power.
When the current is 200% of the rated value , it will “go open” (the link metal melts) and protect the device.
(There is no concept of polarity, in the loop because the current changes direction 100 to 120 times a second (power frequency).
What’s the weirdest phone call you have ever received?
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?
A fuse is a non-resetable over current circuit protector.
eight
Mario Kart World is the perfect Switch 2 launch game - The Verge
The MOV will conduct when the voltage exceeds 50% of line voltage.
but I think this circuit , shows a few more pieces.
He then asserts :
Reality TV star’s son dead at 16: ‘Life is so cruel and unfair’ - AL.com
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.
Now when you have a certain ac resistance, then a current flows in a loop.
One
How has your life changed since starting college?
If the nominal power is 4,000 watts then the current at 230volts is 16 amps.
2024–10–10[John johnson John Johnson ]
2024–10–11 [Bobby Sanchez Bobby Sanchez ].
So, it’s possible that these devices from Trip Lite have addition suppression devices, these ones seem to be sturdy.
“ … to protect building, lightning arrestor, is provided above building and directly connected to earth.”
This is 'the assistant's answer'
Turning the Red Planet green? It's time to take terraforming Mars seriously, scientists say - Space
One is “what exactly is in a ‘surge protector’ ? ”
So, the voltage could go up to 500 volts, and the fuse will not open up.
An AC voltage/ current source, and an ac inductive load.
but this device (an Inductor) … impedes the rapid changes in the current.
[image of Common-mode choke]
I post the exact comment here.
Hic perferendis in et impedit quo.
For this case there are devices called Metal oxide varistors (MOV).
But… the neutral is now “floating” because of the 1 ohm resistance.
And this is the problem alone. Is the power supply in the equipmemt designed with a lightning strike in mind? Some yes, others, no.
First quantum-mechanical model of quasicrystals reveals why they exist - Phys.org
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 combined with a device called a MOV or Metal-oxide-resistor, then forms the 3rd part of a “surge suppressor “.
The other is “what does a “fuse” do?”
what exactly is a ‘surge’ protector?
Here is a simplified AC power diagram.
[old diagram got deleted by accident]
P = e* I, so since I is 16 amps, then the voltage dropped is 1/16 volt or 0.0650 volts.
nine
2024–10–14 [Omar Gharbi Omar Gharbi ]
2024–10–11 [Victor Olarewsju Victor Olarewaju ]
“ A fuse is a device which protects the (circuit) against overload and short circuit.”
What does a fuse do?
Would individual surge supressors have save this equipment? most likely, since the surge supressor would take the jolt instead of the electronic components.
He then describes the function of a fuse.
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.
There are three different concepts here that are getting confused.
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.
Fuses, on their own, then operate much slower than the MOV variable resistance, during the lightning strike.
Is the question then , "why buy a surge supressor, if the fuse alone protects the electronic circuits from a lightning bolt?".
Edit 2024–10.
This device then solves the entire problem.
This one hit behind the barn.
At least they know the answer if they wanted it.
This is where this question deviates from being a 'generic' question, and becomes more specific.
so, the loop of wire then, when put together with another loop reduces the ‘noise’ on a power line.
This is the picture of an electronic coil of wire wound around a core of magnetic material.
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.
Because the load is inductive, the current lags the voltage.(by a bit).
What is lightning?
OK, this is Mohan Rajaratnam’s definition of a Surge suppressor.
But it can get overloaded, and no longer works.
Can the fuse protect the electronic devices from lightning instead of a surge protector.
A circuit breaker is similar, but is resettable.
He then describes Rainy Season and Lightning.
In schematic diagrams this is the symbol for a fuse:
It seems Mohan does not understand the difference between a comment and an Answer.
But during the surge, the fuse will not blow if it is a longer duration and lower value )10 to 50%).
Barnstars:
It’s been three xxx five werks, and there has been no response to my follow on query on his Commment to my answer.