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 12:01
One
Mohan forgets that a fuse is a one-time device, and needs to be replaced if it is tripped.
What is lightning?
The bolt then partially travels down the line to your home.
so, what happens?
These devices are installed between the “hot” and “neutral” and protective ground.
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?".
2024–10–14 [Omar Gharbi Omar Gharbi ]
“ 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”
eight
But it can get overloaded, and no longer works.
Ethane Exporter Says U.S. Won’t Allow Shipments to China - WSJ
“ A fuse is a device which protects the (circuit) against overload and short circuit.”
[image of Common-mode choke]
So, the voltage could go up to 500 volts, and the fuse will not open up.
Rashod Bateman Signs Contract Extension - Baltimore Ravens
Barnstars:
so, the loop of wire then, when put together with another loop reduces the ‘noise’ on a power line.
And this is the problem alone. Is the power supply in the equipmemt designed with a lightning strike in mind? Some yes, others, no.
Why are Korean female leads so angry all the time?
A circuit breaker is similar, but is resettable.
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.
P = e* I, so since I is 16 amps, then the voltage dropped is 1/16 volt or 0.0650 volts.
Why does it itch on my vulva, uterus, and sides of my vagina, but it doesn't itch inside the vagina?
If the nominal power is 4,000 watts then the current at 230volts is 16 amps.
Can the fuse protect the electronic devices from lightning instead of a surge protector.
The MOV will conduct when the voltage exceeds 50% of line voltage.
Where the Stock Market Stands Now After a Wild Start to the Year - Bloomberg.com
It seems Mohan does not understand the difference between a comment and an Answer.
The other is “what does a “fuse” do?”
Would individual surge supressors have save this equipment? most likely, since the surge supressor would take the jolt instead of the electronic components.
Meta in Talks for Scale AI Investment That Could Top $10 Billion - Bloomberg
Because the load is inductive, the current lags the voltage.(by a bit).
Upvotes:
This is 'the assistant's answer'
Why is there so much hate against black people?
Now when you have a certain ac resistance, then a current flows in a loop.
nine
(Dc diagram shown, AC is similar).
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 third is lightning and “how it gets conducted into a home.”
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?
the problem then depends on "how fast does the fuse operate?".
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.
[old diagram got deleted by accident]
Hegseth warns China poses 'imminent' threat to Taiwan and urges Asia to boost defence - BBC
He then asserts :
This device then solves the entire problem.
what exactly is a ‘surge’ protector?
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.
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.
These are simplified answers to the original question, and does not change anything I wrote above.
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.
This is where this question deviates from being a 'generic' question, and becomes more specific.
An AC voltage/ current source, and an ac inductive load.
Edit 2024–10.
Here is a simplified AC power diagram.
First Sentence:
but I think this circuit , shows a few more pieces.
There are three different concepts here that are getting confused.
2024–10–00 [ Ammar Mahdi ] Ammar Mahdi
This one hit behind the barn.
This is where the MOV conducts again, and dissipated the energy.
One is “what exactly is in a ‘surge protector’ ? ”
So combined with a device called a MOV or Metal-oxide-resistor, then forms the 3rd part of a “surge suppressor “.
But… the neutral is now “floating” because of the 1 ohm resistance.
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.
OK, this is Mohan Rajaratnam’s definition of a Surge suppressor.
When the current is 200% of the rated value , it will “go open” (the link metal melts) and protect the device.
At one ohm, the resistor has a maximum of 1 watt power.
Fuses, on their own, then operate much slower than the MOV variable resistance, during the lightning strike.
2024–10–11 [Bobby Sanchez Bobby Sanchez ].
It also is a device that limits the change in current flow.
2024–10–10[John johnson John Johnson ]
In schematic diagrams this is the symbol for a fuse:
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 is no concept of polarity, in the loop because the current changes direction 100 to 120 times a second (power frequency).
But during the surge, the fuse will not blow if it is a longer duration and lower value )10 to 50%).
2024–10–16 [ OO OLAOYE OYEBODE ]
“ … to protect building, lightning arrestor, is provided above building and directly connected to earth.”
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.
He then describes Rainy Season and Lightning.
2024–10–11 [Victor Olarewsju Victor Olarewaju ]
This is the picture of an electronic coil of wire wound around a core of magnetic material.
At least they know the answer if they wanted it.
but this device (an Inductor) … impedes the rapid changes in the current.
a photo is worth a thousand words.
What does a fuse do?
A fuse is a non-resetable over current circuit protector.
I post the exact comment here.
There are two important concepts here.