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?
12.06.2025 08:10
But during the surge, the fuse will not blow if it is a longer duration and lower value )10 to 50%).
2024–10–00 [ Ammar Mahdi ] Ammar Mahdi
This is where the MOV conducts again, and dissipated the energy.
How can you tell if someone is cunning?
2024–10–14 [Omar Gharbi Omar Gharbi ]
So, it’s possible that these devices from Trip Lite have addition suppression devices, these ones seem to be sturdy.
One is “what exactly is in a ‘surge protector’ ? ”
What shocking family behavior did you read about in India?
OK, this is Mohan Rajaratnam’s definition of a Surge suppressor.
Here is a simplified AC power diagram.
For this case there are devices called Metal oxide varistors (MOV).
Geomagnetic storm could make northern lights visible in Chicago on Sunday night - Chicago Sun-Times
The other is “what does a “fuse” do?”
It’s been three xxx five werks, and there has been no response to my follow on query on his Commment to my answer.
a photo is worth a thousand words.
Discover Why These 2025 Milky Way Photos Are Shaking the Astrophotography World - The Daily Galaxy
This is where this question deviates from being a 'generic' question, and becomes more specific.
but this device (an Inductor) … impedes the rapid changes in the current.
A fuse is a non-resetable over current circuit protector.
What should I do? I'm 17 and I'm dating a 23-year-old guy.
Upvotes:
Mohan forgets that a fuse is a one-time device, and needs to be replaced if it is tripped.
This is the picture of an electronic coil of wire wound around a core of magnetic material.
Trump asks Congress to pull $9.4 billion in funding for NPR, PBS and foreign aid - Axios
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?
Fuses, on their own, then operate much slower than the MOV variable resistance, during the lightning strike.
An AC voltage/ current source, and an ac inductive load.
June 1 — and dramatically reduced buyout — arrives for Bill Belichick - NBC Sports
It also is a device that limits the change in current flow.
the problem then depends on "how fast does the fuse operate?".
And this is the problem alone. Is the power supply in the equipmemt designed with a lightning strike in mind? Some yes, others, no.
In schematic diagrams this is the symbol for a fuse:
(There is no concept of polarity, in the loop because the current changes direction 100 to 120 times a second (power frequency).
First Sentence:
Why is there no great temptress figure in any of Tolkien’s major works?
But it can get overloaded, and no longer works.
Barnstars:
He then describes the function of a fuse.
This Plant You’ve Never Heard of Can Do What Scientists Thought Was Impossible - SciTechDaily
Would individual surge supressors have save this equipment? most likely, since the surge supressor would take the jolt instead of the electronic components.
At one ohm, the resistor has a maximum of 1 watt power.
[old diagram got deleted by accident]
What are "the new net zero jobs of tomorrow" that SNP's Stephen Flynn says his party would create?
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.
If the nominal power is 4,000 watts then the current at 230volts is 16 amps.
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 circuit breaker is similar, but is resettable.
Edit 2024–10.
This device then solves the entire problem.
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.
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.
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.
so, the loop of wire then, when put together with another loop reduces the ‘noise’ on a power line.
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.
So combined with a device called a MOV or Metal-oxide-resistor, then forms the 3rd part of a “surge suppressor “.
“ 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, what happens?
but I think this circuit , shows a few more pieces.
He then asserts :
But… the neutral is now “floating” because of the 1 ohm resistance.
When the current is 200% of the rated value , it will “go open” (the link metal melts) and protect the device.
These devices are installed between the “hot” and “neutral” and protective ground.
The MOV will conduct when the voltage exceeds 50% of line voltage.
“ … to protect building, lightning arrestor, is provided above building and directly connected to earth.”
So, the voltage could go up to 500 volts, and the fuse will not open up.
P = e* I, so since I is 16 amps, then the voltage dropped is 1/16 volt or 0.0650 volts.
Now when you have a certain ac resistance, then a current flows in a loop.
The third is lightning and “how it gets conducted into a home.”
2024–10–16 [ OO OLAOYE OYEBODE ]
Is the question then , "why buy a surge supressor, if the fuse alone protects the electronic circuits from a lightning bolt?".
2024–10–10[John johnson John Johnson ]
It seems Mohan does not understand the difference between a comment and an Answer.
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.
The bolt then partially travels down the line to your home.
At least they know the answer if they wanted it.
(Dc diagram shown, AC is similar).
eight
There are three different concepts here that are getting confused.
Because the load is inductive, the current lags the voltage.(by a bit).
This is 'the assistant's answer'
2024–10–11 [Bobby Sanchez Bobby Sanchez ].
One
These are simplified answers to the original question, and does not change anything I wrote above.
what exactly is a ‘surge’ protector?
He then describes Rainy Season and Lightning.
nine
2024–10–11 [Victor Olarewsju Victor Olarewaju ]
I post the exact comment here.
Can the fuse protect the electronic devices from lightning instead of a surge protector.
This one hit behind the barn.
[image of Common-mode choke]
What does a fuse do?
What is lightning?
“ A fuse is a device which protects the (circuit) against overload and short circuit.”