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 01:40
2024–10–10[John johnson John Johnson ]
Edit 2024–10.
It also is a device that limits the change in current flow.
Big Cyberpunk 2077 Updates Were Thought To Be Done, But 2.3 Patch Launches Soon - GameSpot
There are three different concepts here that are getting confused.
A circuit breaker is similar, but is resettable.
He then describes the function of a fuse.
10 quotes about science’s value to society - Big Think
2024–10–16 [ OO OLAOYE OYEBODE ]
2024–10–11 [Victor Olarewsju Victor Olarewaju ]
Here is a simplified AC power diagram.
What are the signs of covert narcissistic abuse that most people miss?
eight
P = e* I, so since I is 16 amps, then the voltage dropped is 1/16 volt or 0.0650 volts.
At one ohm, the resistor has a maximum of 1 watt power.
A fuse is a non-resetable over current circuit protector.
so, what happens?
nine
AI risks 'broken' career ladder for college graduates, some experts say - ABC News
2024–10–00 [ Ammar Mahdi ] Ammar Mahdi
The third is lightning and “how it gets conducted into a home.”
but this device (an Inductor) … impedes the rapid changes in the current.
Why didn't people like the Game of Thrones ending?
“ … to protect building, lightning arrestor, is provided above building and directly connected to earth.”
what exactly is a ‘surge’ protector?
2024–10–11 [Bobby Sanchez Bobby Sanchez ].
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 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.
So, it’s possible that these devices from Trip Lite have addition suppression devices, these ones seem to be sturdy.
South Korea’s Venus-focused cubesat advances as larger missions face NASA cuts - SpaceNews
[image of Common-mode choke]
Mohan forgets that a fuse is a one-time device, and needs to be replaced if it is tripped.
The bolt then partially travels down the line to your home.
Does having the wrong address on my car insurance invalidate my policy?
What does a fuse do?
There are two important concepts here.
If the nominal power is 4,000 watts then the current at 230volts is 16 amps.
Hillary thinks we must censor or "we lose total control". Why does she demand total control?
[old diagram got deleted by accident]
This is where the MOV conducts again, and dissipated the energy.
But it can get overloaded, and no longer works.
Shortcuts App to Get Revamp With Apple Intelligence Integration - MacRumors
This one hit behind the barn.
the problem then depends on "how fast does the fuse operate?".
But during the surge, the fuse will not blow if it is a longer duration and lower value )10 to 50%).
This is where this question deviates from being a 'generic' question, and becomes more specific.
“ A fuse is a device which protects the (circuit) against overload and short circuit.”
Upvotes:
He then describes Rainy Season and Lightning.
These devices are installed between the “hot” and “neutral” and protective ground.
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.
But… the neutral is now “floating” because of the 1 ohm resistance.
For this case there are devices called Metal oxide varistors (MOV).
In schematic diagrams this is the symbol for a fuse:
These are simplified answers to the original question, and does not change anything I wrote above.
This device then solves the entire problem.
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.
(There is no concept of polarity, in the loop because the current changes direction 100 to 120 times a second (power frequency).
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.
When the current is 200% of the rated value , it will “go open” (the link metal melts) and protect the device.
Would individual surge supressors have save this equipment? most likely, since the surge supressor would take the jolt instead of the electronic components.
Barnstars:
I post the exact comment here.
It seems Mohan does not understand the difference between a comment and an Answer.
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’s been three xxx five werks, and there has been no response to my follow on query on his Commment to my 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.
One is “what exactly is in a ‘surge protector’ ? ”
An AC voltage/ current source, and an ac inductive load.
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 photo is worth a thousand words.
Can the fuse protect the electronic devices from lightning instead of a surge protector.
What is lightning?
One
This is 'the assistant's answer'
OK, this is Mohan Rajaratnam’s definition of a Surge suppressor.
but I think this circuit , shows a few more pieces.
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.
so, the loop of wire then, when put together with another loop reduces the ‘noise’ on a power line.
Fuses, on their own, then operate much slower than the MOV variable resistance, during the lightning strike.
Because the load is inductive, the current lags the voltage.(by a bit).
“ 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”
First Sentence:
He then asserts :
At least they know the answer if they wanted it.
The other is “what does a “fuse” do?”
So, the voltage could go up to 500 volts, and the fuse will not open up.
2024–10–14 [Omar Gharbi Omar Gharbi ]
The MOV will conduct when the voltage exceeds 50% of line voltage.
(Dc diagram shown, AC is similar).
Is the question then , "why buy a surge supressor, if the fuse alone protects the electronic circuits from a lightning bolt?".
Now when you have a certain ac resistance, then a current flows in a loop.
This is the picture of an electronic coil of wire wound around a core of magnetic material.
So combined with a device called a MOV or Metal-oxide-resistor, then forms the 3rd part of a “surge suppressor “.