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: 26.06.2025 10:13
A fuse is a non-resetable over current circuit protector.
Can the fuse protect the electronic devices from lightning instead of a surge protector.
Now when you have a certain ac resistance, then a current flows in a loop.
A fireball over desert mountains photo of the day for May 30, 2025 - Space
eight
P = e* I, so since I is 16 amps, then the voltage dropped is 1/16 volt or 0.0650 volts.
For this case there are devices called Metal oxide varistors (MOV).
2025 Stanley Cup Finals Preview: Can Connor McDavid Finally Do It? - The Ringer
“ … to protect building, lightning arrestor, is provided above building and directly connected to earth.”
I post the exact comment here.
One
Necessitatibus ipsa sequi animi dolores molestiae.
Here is a simplified AC power diagram.
OK, this is Mohan Rajaratnam’s definition of a Surge suppressor.
Mohan forgets that a fuse is a one-time device, and needs to be replaced if it is tripped.
In schematic diagrams this is the symbol for a fuse:
Would individual surge supressors have save this equipment? most likely, since the surge supressor would take the jolt instead of the electronic components.
And this is the problem alone. Is the power supply in the equipmemt designed with a lightning strike in mind? Some yes, others, no.
Exclusive Trump interview: A big steel deal for Pennsylvania - Washington Examiner
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?
so, what happens?
This is the picture of an electronic coil of wire wound around a core of magnetic material.
He then describes the function of a fuse.
a photo is worth a thousand words.
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.
Top Federal Reserve official promises major overhaul of US bank regulation - Financial Times
Upvotes:
At one ohm, the resistor has a maximum of 1 watt power.
One is “what exactly is in a ‘surge protector’ ? ”
Practice Report: Takeaways From Start of Second Week of OTAs - Baltimore Ravens
[image of Common-mode choke]
This is where this question deviates from being a 'generic' question, and becomes more specific.
(Dc diagram shown, AC is similar).
Wolfspeed Stock Tumbles Amid Bankruptcy Plan. What's Next for the Chip Company. - Barron's
It’s been three xxx five werks, and there has been no response to my follow on query on his Commment to my answer.
but I think this circuit , shows a few more pieces.
nine
Stock futures fall as investors eye Israel-Iran conflict: Live updates - CNBC
This is 'the assistant's answer'
2024–10–00 [ Ammar Mahdi ] Ammar Mahdi
First Sentence:
All four iPhone 17 models just tipped for ‘metalens’ upgrade - Tom's Guide
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.
If the nominal power is 4,000 watts then the current at 230volts is 16 amps.
It also is a device that limits the change in current flow.
WBD Shareholders Nix David Zaslav’s 2024 Pay Package In Non-Binding Vote - Deadline
but this device (an Inductor) … impedes the rapid changes in the current.
He then asserts :
Because the load is inductive, the current lags the voltage.(by a bit).
Different Autism Genes, Same Brain Signature - Neuroscience News
“ A fuse is a device which protects the (circuit) against overload and short circuit.”
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.
This device then solves the entire problem.
What are the best moistening cream and sunscreen for oily skin?
What does a fuse do?
The other is “what does a “fuse” do?”
But it can get overloaded, and no longer works.
The third is lightning and “how it gets conducted into a home.”
But during the surge, the fuse will not blow if it is a longer duration and lower value )10 to 50%).
This is where the MOV conducts again, and dissipated the energy.
A circuit breaker is similar, but is resettable.
The bolt then partially travels down the line to your home.
Edit 2024–10.
When the current is 200% of the rated value , it will “go open” (the link metal melts) and protect the device.
Barnstars:
An AC voltage/ current source, and an ac inductive load.
2024–10–14 [Omar Gharbi Omar Gharbi ]
The MOV will conduct when the voltage exceeds 50% of line voltage.
These are simplified answers to the original question, and does not change anything I wrote above.
There are two important concepts here.
But… the neutral is now “floating” because of the 1 ohm resistance.
so, the loop of wire then, when put together with another loop reduces the ‘noise’ on a power line.
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.
These devices are installed between the “hot” and “neutral” and protective ground.
So, the voltage could go up to 500 volts, and the fuse will not open up.
This one hit behind the barn.
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.
There are three different concepts here that are getting confused.
[old diagram got deleted by accident]
what exactly is a ‘surge’ protector?
(There is no concept of polarity, in the loop because the current changes direction 100 to 120 times a second (power frequency).
2024–10–11 [Victor Olarewsju Victor Olarewaju ]
What is lightning?
2024–10–16 [ OO OLAOYE OYEBODE ]
the problem then depends on "how fast does the fuse operate?".
He then describes Rainy Season and Lightning.
2024–10–11 [Bobby Sanchez Bobby Sanchez ].
Is the question then , "why buy a surge supressor, if the fuse alone protects the electronic circuits from a lightning bolt?".
At least they know the answer if they wanted it.
So, it’s possible that these devices from Trip Lite have addition suppression devices, these ones seem to be sturdy.
“ 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”
2024–10–10[John johnson John Johnson ]
So combined with a device called a MOV or Metal-oxide-resistor, then forms the 3rd part of a “surge suppressor “.
Fuses, on their own, then operate much slower than the MOV variable resistance, during the lightning strike.
It seems Mohan does not understand the difference between a comment and an Answer.
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.
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.