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 00:00
But during the surge, the fuse will not blow if it is a longer duration and lower value )10 to 50%).
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.
“ … to protect building, lightning arrestor, is provided above building and directly connected to earth.”
nine
At one ohm, the resistor has a maximum of 1 watt power.
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.
He then describes Rainy Season and Lightning.
What does a fuse do?
Will you share your wife? Can she take both of us at the same time?
At least they know the answer if they wanted it.
“ A fuse is a device which protects the (circuit) against overload and short circuit.”
2024–10–11 [Victor Olarewsju Victor Olarewaju ]
Why the U.S. tax bill's Section 899 could push European firms to list in the U.S. - CNBC
Upvotes:
There are three different concepts here that are getting confused.
what exactly is a ‘surge’ protector?
Forget drones, Amazon has new robots that could replace humans - TheStreet
the problem then depends on "how fast does the fuse operate?".
So, the voltage could go up to 500 volts, and the fuse will not open up.
This device then solves the entire problem.
Skulls once subject to racist study in Germany are laid to rest in New Orleans - NPR
This one hit behind the barn.
It also is a device that limits the change in current flow.
Here is a simplified AC power diagram.
Have you ever had sex with your female cousin? How did it start?
So combined with a device called a MOV or Metal-oxide-resistor, then forms the 3rd part of a “surge suppressor “.
There are two important concepts here.
This is 'the assistant's answer'
Xbox Building A Handheld 'Makes No Sense', Says Former Blizzard Boss - Pure Xbox
For this case there are devices called Metal oxide varistors (MOV).
2024–10–11 [Bobby Sanchez Bobby Sanchez ].
Barnstars:
An AC voltage/ current source, and an ac inductive load.
but this device (an Inductor) … impedes the rapid changes in the current.
but I think this circuit , shows a few more pieces.
Retinal prosthesis woven from tellurium nanowires partially restores vision in blind mice - Phys.org
Is the question then , "why buy a surge supressor, if the fuse alone protects the electronic circuits from a lightning bolt?".
The MOV will conduct when the voltage exceeds 50% of line voltage.
“ 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 are some interview experiences with JP Morgan India?
He then describes the function of a fuse.
2024–10–00 [ Ammar Mahdi ] Ammar Mahdi
A fuse is a non-resetable over current circuit protector.
It’s been three xxx five werks, and there has been no response to my follow on query on his Commment to my answer.
The bolt then partially travels down the line to your home.
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.
Would individual surge supressors have save this equipment? most likely, since the surge supressor would take the jolt instead of the electronic components.
2024–10–14 [Omar Gharbi Omar Gharbi ]
It seems Mohan does not understand the difference between a comment and an Answer.
News & Notes: John Harbaugh on Why Jon Gruden Observed OTAs - Baltimore Ravens
Fuses, on their own, then operate much slower than the MOV variable resistance, during the lightning strike.
But… the neutral is now “floating” because of the 1 ohm resistance.
In schematic diagrams this is the symbol for a fuse:
Why are Capri cigarettes so expensive?
The third is lightning and “how it gets conducted into a home.”
Now when you have a certain ac resistance, then a current flows in a loop.
eight
(There is no concept of polarity, in the loop because the current changes direction 100 to 120 times a second (power frequency).
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.
Because the load is inductive, the current lags the voltage.(by a bit).
The other is “what does a “fuse” do?”
so, what happens?
This is the picture of an electronic coil of wire wound around a core of magnetic material.
But it can get overloaded, and no longer works.
And this is the problem alone. Is the power supply in the equipmemt designed with a lightning strike in mind? Some yes, others, no.
[old diagram got deleted by accident]
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?
[image of Common-mode choke]
These devices are installed between the “hot” and “neutral” and protective ground.
A circuit breaker is similar, but is resettable.
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 where this question deviates from being a 'generic' question, and becomes more specific.
2024–10–10[John johnson John Johnson ]
One is “what exactly is in a ‘surge protector’ ? ”
These are simplified answers to the original question, and does not change anything I wrote above.
One
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:
Mohan forgets that a fuse is a one-time device, and needs to be replaced if it is tripped.
OK, this is Mohan Rajaratnam’s definition of a Surge suppressor.
P = e* I, so since I is 16 amps, then the voltage dropped is 1/16 volt or 0.0650 volts.
So, it’s possible that these devices from Trip Lite have addition suppression devices, these ones seem to be sturdy.
Edit 2024–10.
(Dc diagram shown, AC is similar).
He then asserts :
When the current is 200% of the rated value , it will “go open” (the link metal melts) and protect the device.
2024–10–16 [ OO OLAOYE OYEBODE ]
so, the loop of wire then, when put together with another loop reduces the ‘noise’ on a power line.
a photo is worth a thousand words.
If the nominal power is 4,000 watts then the current at 230volts is 16 amps.
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.
What is lightning?
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.
I post the exact comment here.