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: 24.06.2025 07:43
One is “what exactly is in a ‘surge protector’ ? ”
so, the loop of wire then, when put together with another loop reduces the ‘noise’ on a power line.
He then asserts :
2024–10–00 [ Ammar Mahdi ] Ammar Mahdi
so, what happens?
2024–10–14 [Omar Gharbi Omar Gharbi ]
Scientists visualize key protein structures linked to immune response and inflammation - Phys.org
2024–10–11 [Victor Olarewsju Victor Olarewaju ]
2024–10–16 [ OO OLAOYE OYEBODE ]
but this device (an Inductor) … impedes the rapid changes in the current.
What is the typical mentality of the Indian society?
For this case there are devices called Metal oxide varistors (MOV).
I post the exact comment here.
Would individual surge supressors have save this equipment? most likely, since the surge supressor would take the jolt instead of the electronic components.
Edit 2024–10.
This is where this question deviates from being a 'generic' question, and becomes more specific.
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?
What is the happy reality of our generation?
2024–10–10[John johnson John Johnson ]
Barnstars:
The third is lightning and “how it gets conducted into a home.”
Healthy Returns: Ozempic, Wegovy linked to rare cases of serious eye condition - CNBC
First Sentence:
He then describes the function of a fuse.
Because the load is inductive, the current lags the voltage.(by a bit).
Can you turn 150 pages into a 5 minute presentation before a meeting?
When the current is 200% of the rated value , it will “go open” (the link metal melts) and protect the device.
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.
It also is a device that limits the change in current flow.
Universal embezzlers naturally emerge in critical fermion systems, study finds - Phys.org
but I think this circuit , shows a few more pieces.
a photo is worth a thousand words.
At one ohm, the resistor has a maximum of 1 watt power.
Coating satellites with super-black paint Vantablack could help fight light pollution crisis - Space
eight
2024–10–11 [Bobby Sanchez Bobby Sanchez ].
An AC voltage/ current source, and an ac inductive load.
Popular Diabetes Drug Linked to Longer Life – Could It Help You Live Past 90? - SciTechDaily
Upvotes:
This device then solves the entire problem.
The bolt then partially travels down the line to your home.
Baby Talk Enhances Infant Speech Learning - Neuroscience News
Is the question then , "why buy a surge supressor, if the fuse alone protects the electronic circuits from a lightning bolt?".
But… the neutral is now “floating” because of the 1 ohm resistance.
What does a fuse do?
AI alone cannot solve the productivity puzzle - Financial Times
One
This is the picture of an electronic coil of wire wound around a core of magnetic material.
A circuit breaker is similar, but is resettable.
This Plant You’ve Never Heard of Can Do What Scientists Thought Was Impossible - SciTechDaily
He then describes Rainy Season and Lightning.
P = e* I, so since I is 16 amps, then the voltage dropped is 1/16 volt or 0.0650 volts.
If the nominal power is 4,000 watts then the current at 230volts is 16 amps.
(Dc diagram shown, AC is similar).
“ … to protect building, lightning arrestor, is provided above building and directly connected to earth.”
Now when you have a certain ac resistance, then a current flows in a loop.
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.
There are two important concepts here.
So, it’s possible that these devices from Trip Lite have addition suppression devices, these ones seem to be sturdy.
This one hit behind the barn.
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 fuse is a device which protects the (circuit) against overload and short circuit.”
In schematic diagrams this is the symbol for a fuse:
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.
Can the fuse protect the electronic devices from lightning instead of a surge protector.
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.
But it can get overloaded, and no longer works.
There are three different concepts here that are getting confused.
The other is “what does a “fuse” do?”
Fuses, on their own, then operate much slower than the MOV variable resistance, during the lightning strike.
Here is a simplified AC power diagram.
This is where the MOV conducts again, and dissipated the energy.
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 during the surge, the fuse will not blow if it is a longer duration and lower value )10 to 50%).
(There is no concept of polarity, in the loop because the current changes direction 100 to 120 times a second (power frequency).
the problem then depends on "how fast does the fuse operate?".
These devices are installed between the “hot” and “neutral” and protective ground.
what exactly is a ‘surge’ protector?
So combined with a device called a MOV or Metal-oxide-resistor, then forms the 3rd part of a “surge suppressor “.
At least they know the answer if they wanted it.
[old diagram got deleted by accident]
It seems Mohan does not understand the difference between a comment and an 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”
[image of Common-mode choke]
These are simplified answers to the original question, and does not change anything I wrote above.
nine
A fuse is a non-resetable over current circuit protector.
This is 'the assistant's answer'
And this is the problem alone. Is the power supply in the equipmemt designed with a lightning strike in mind? Some yes, others, no.
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.
It’s been three xxx five werks, and there has been no response to my follow on query on his Commment to my answer.
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.
The MOV will conduct when the voltage exceeds 50% of line voltage.
What is lightning?
So, the voltage could go up to 500 volts, and the fuse will not open up.