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?
10.06.2025 09:21
There are three different concepts here that are getting confused.
This is where this question deviates from being a 'generic' question, and becomes more specific.
In schematic diagrams this is the symbol for a fuse:
I have a bad reputation and need help. What should I do?
Fuses, on their own, then operate much slower than the MOV variable resistance, during the lightning strike.
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?
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.
Checkers Sweep Laval to Earn Trip to Calder Cup Finals - Charlotte Checkers Hockey
what exactly is a ‘surge’ protector?
2024–10–11 [Victor Olarewsju Victor Olarewaju ]
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.
so, the loop of wire then, when put together with another loop reduces the ‘noise’ on a power line.
eight
Bitcoin bears bet against BTC’s rally, but a short squeeze could follow IF… - AMBCrypto
“ … to protect building, lightning arrestor, is provided above building and directly connected to earth.”
He then describes Rainy Season and Lightning.
This one hit behind the barn.
WWE WrestleMania 42 Announced for Las Vegas After Relocation from New Orleans - Bleacher Report
He then describes the function of a fuse.
“ 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”
2024–10–14 [Omar Gharbi Omar Gharbi ]
He then asserts :
so, what happens?
Because the load is inductive, the current lags the voltage.(by a bit).
A rocket scientist wrestles with backlash over her Blue Origin flight - The Washington Post
It’s been three xxx five werks, and there has been no response to my follow on query on his Commment to my answer.
[image of Common-mode choke]
A circuit breaker is similar, but is resettable.
What causes you to be tired all the time and major headaches?
These are simplified answers to the original question, and does not change anything I wrote above.
So combined with a device called a MOV or Metal-oxide-resistor, then forms the 3rd part of a “surge suppressor “.
2024–10–10[John johnson John Johnson ]
—— indirects on kuorans, irl and idols
One
2024–10–11 [Bobby Sanchez Bobby Sanchez ].
Mohan forgets that a fuse is a one-time device, and needs to be replaced if it is tripped.
macOS Tahoe Name Leaked Ahead of Apple's WWDC Event Next Week - MacRumors
Can the fuse protect the electronic devices from lightning instead of a surge protector.
It also is a device that limits the change in current flow.
but I think this circuit , shows a few more pieces.
So, the voltage could go up to 500 volts, and the fuse will not open up.
I post the exact comment here.
(Dc diagram shown, AC is similar).
Why are people of mixed race seen as more attractive than non-mixed-race people?
It seems Mohan does not understand the difference between a comment and an Answer.
A fuse is a non-resetable over current circuit protector.
but this device (an Inductor) … impedes the rapid changes in the current.
Is OnlyFans good or bad for the society? Why?
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.
These devices are installed between the “hot” and “neutral” and protective ground.
There are two important concepts here.
[old diagram got deleted by accident]
At least they know the answer if they wanted it.
What were some of the unforgettable incidents from your school life?
Is the question then , "why buy a surge supressor, if the fuse alone protects the electronic circuits from a lightning bolt?".
At one ohm, the resistor has a maximum of 1 watt power.
This is where the MOV conducts again, and dissipated the energy.
If the nominal power is 4,000 watts then the current at 230volts is 16 amps.
This device then solves the entire problem.
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.
nine
Now when you have a certain ac resistance, then a current flows in a loop.
2024–10–00 [ Ammar Mahdi ] Ammar Mahdi
But it can get overloaded, and no longer works.
Upvotes:
One is “what exactly is in a ‘surge protector’ ? ”
This is 'the assistant's answer'
What does a fuse do?
The third is lightning and “how it gets conducted into a home.”
An AC voltage/ current source, and an ac inductive load.
Edit 2024–10.
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.
P = e* I, so since I is 16 amps, then the voltage dropped is 1/16 volt or 0.0650 volts.
The MOV will conduct when the voltage exceeds 50% of line voltage.
But… the neutral is now “floating” because of the 1 ohm resistance.
What is lightning?
When the current is 200% of the rated value , it will “go open” (the link metal melts) and protect the device.
OK, this is Mohan Rajaratnam’s definition of a Surge suppressor.
Would individual surge supressors have save this equipment? most likely, since the surge supressor would take the jolt instead of the electronic components.
For this case there are devices called Metal oxide varistors (MOV).
Here is a simplified AC power diagram.
(There is no concept of polarity, in the loop because the current changes direction 100 to 120 times a second (power frequency).
The other is “what does a “fuse” do?”
a photo is worth a thousand words.
But during the surge, the fuse will not blow if it is a longer duration and lower value )10 to 50%).
First Sentence:
the problem then depends on "how fast does the fuse operate?".
Barnstars:
“ A fuse is a device which protects the (circuit) against overload and short circuit.”
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, it’s possible that these devices from Trip Lite have addition suppression devices, these ones seem to be sturdy.
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.
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.
2024–10–16 [ OO OLAOYE OYEBODE ]