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: 30.06.2025 00:08
These are simplified answers to the original question, and does not change anything I wrote above.
What does a fuse do?
But… the neutral is now “floating” because of the 1 ohm resistance.
nine
2024–10–10[John johnson John Johnson ]
2024–10–14 [Omar Gharbi Omar Gharbi ]
How often should you forgive someone for hurting you? At what point should you cut ties?
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.
He then describes the function of a fuse.
Is the question then , "why buy a surge supressor, if the fuse alone protects the electronic circuits from a lightning bolt?".
How is ice climbing a different or similar experience from rock climbing?
P = e* I, so since I is 16 amps, then the voltage dropped is 1/16 volt or 0.0650 volts.
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.
First Sentence:
What causes my mouth to be so dry at night my teeth sticks to my lips?
so, what happens?
There are three different concepts here that are getting confused.
So, the voltage could go up to 500 volts, and the fuse will not open up.
Why are so many young teenage boys misogynistic? Where do they get these attitudes from?
2024–10–11 [Bobby Sanchez Bobby Sanchez ].
One
but this device (an Inductor) … impedes the rapid changes in the current.
The ‘inexcusable’ mistake Knicks made again and again in season-ending loss - New York Post
So combined with a device called a MOV or Metal-oxide-resistor, then forms the 3rd part of a “surge suppressor “.
“ … to protect building, lightning arrestor, is provided above building and directly connected to earth.”
This is where this question deviates from being a 'generic' question, and becomes more specific.
How many wishes do people get on their birthday?
At one ohm, the resistor has a maximum of 1 watt power.
“ 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”
What is lightning?
Human remains lost after memorial spaceflight capsule crashes into the sea - Space
At least they know the answer if they wanted it.
(Dc diagram shown, AC is similar).
Barnstars:
May 2024 solar storm cost $500 million in damages to farmers, new study reveals - Space
When the current is 200% of the rated value , it will “go open” (the link metal melts) and protect the device.
[image of Common-mode choke]
Now when you have a certain ac resistance, then a current flows in a loop.
How does Taylor Swift make sure that she doesn’t show her uterus to her audience and fans?
A circuit breaker is similar, but is resettable.
This is 'the assistant's answer'
so, the loop of wire then, when put together with another loop reduces the ‘noise’ on a power line.
Why men with broken heart syndrome are more likely to die, according to experts - East Idaho News
The MOV will conduct when the voltage exceeds 50% of line voltage.
If the nominal power is 4,000 watts then the current at 230volts is 16 amps.
This device then solves the entire problem.
Do straight guys like to see cocks?
A fuse is a non-resetable over current circuit protector.
what exactly is a ‘surge’ protector?
It seems Mohan does not understand the difference between a comment and an Answer.
Blue Diamond to close historic midtown Sacramento plant; 600 jobs affected - Sacramento Bee
a photo is worth a thousand words.
“ A fuse is a device which protects the (circuit) against overload and short circuit.”
This one hit behind the barn.
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?
There are two important concepts here.
The other is “what does a “fuse” do?”
I post the exact comment here.
But it can get overloaded, and no longer works.
2024–10–16 [ OO OLAOYE OYEBODE ]
(There is no concept of polarity, in the loop because the current changes direction 100 to 120 times a second (power frequency).
OK, this is Mohan Rajaratnam’s definition of a Surge suppressor.
And this is the problem alone. Is the power supply in the equipmemt designed with a lightning strike in mind? Some yes, others, no.
eight
It also is a device that limits the change in current flow.
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.
Because the load is inductive, the current lags the voltage.(by a bit).
Upvotes:
In schematic diagrams this is the symbol for a fuse:
One is “what exactly is in a ‘surge protector’ ? ”
The third is lightning and “how it gets conducted into a home.”
He then asserts :
For this case there are devices called Metal oxide varistors (MOV).
So, it’s possible that these devices from Trip Lite have addition suppression devices, these ones seem to be sturdy.
but I think this circuit , shows a few more pieces.
2024–10–00 [ Ammar Mahdi ] Ammar Mahdi
The bolt then partially travels down the line to your home.
the problem then depends on "how fast does the fuse operate?".
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.
Mohan forgets that a fuse is a one-time device, and needs to be replaced if it is tripped.
Would individual surge supressors have save this equipment? most likely, since the surge supressor would take the jolt instead of the electronic components.
These devices are installed between the “hot” and “neutral” and protective ground.
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.
He then describes Rainy Season and Lightning.
Edit 2024–10.
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.
2024–10–11 [Victor Olarewsju Victor Olarewaju ]
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.
An AC voltage/ current source, and an ac inductive load.
[old diagram got deleted by accident]
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 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.
Can the fuse protect the electronic devices from lightning instead of a surge protector.
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 the picture of an electronic coil of wire wound around a core of magnetic material.