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: 26.06.2025 00:46
A fuse is a non-resetable over current circuit protector.
This device then solves the entire problem.
Is the question then , "why buy a surge supressor, if the fuse alone protects the electronic circuits from a lightning bolt?".
2024–10–16 [ OO OLAOYE OYEBODE ]
At one ohm, the resistor has a maximum of 1 watt power.
What is lightning?
This is where the MOV conducts again, and dissipated the energy.
2024–10–00 [ Ammar Mahdi ] Ammar Mahdi
This one hit behind the barn.
Vandals target Paris Holocaust memorial, synagogues with paint - France 24
He then describes Rainy Season and Lightning.
Can the fuse protect the electronic devices from lightning instead of a surge protector.
so, what happens?
Is it harder to become a professor nowadays? If yes, why?
eight
The third is lightning and “how it gets conducted into a home.”
This is 'the assistant's answer'
Calvin Pickard Saved The Day - Defector
At least they know the answer if they wanted it.
There are three different concepts here that are getting confused.
what exactly is a ‘surge’ protector?
Wing and Walmart are bringing drone delivery to 100 new stores - The Verge
[old diagram got deleted by accident]
but I think this circuit , shows a few more pieces.
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.
Maxime amet sequi odit placeat molestiae.
Barnstars:
2024–10–11 [Bobby Sanchez Bobby Sanchez ].
So, it’s possible that these devices from Trip Lite have addition suppression devices, these ones seem to be sturdy.
Fresh iPhone 17 leak gives first close-up look at next-gen Apple smartphones - Mashable
So combined with a device called a MOV or Metal-oxide-resistor, then forms the 3rd part of a “surge suppressor “.
But during the surge, the fuse will not blow if it is a longer duration and lower value )10 to 50%).
“ A fuse is a device which protects the (circuit) against overload and short circuit.”
What's your favourite porn video to jerk off to?
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.
nine
A circuit breaker is similar, but is resettable.
This is where this question deviates from being a 'generic' question, and becomes more specific.
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.
How can I fall asleep fast at night?
When the current is 200% of the rated value , it will “go open” (the link metal melts) and protect the device.
a photo is worth a thousand words.
This is the picture of an electronic coil of wire wound around a core of magnetic material.
Would individual surge supressors have save this equipment? most likely, since the surge supressor would take the jolt instead of the electronic components.
so, the loop of wire then, when put together with another loop reduces the ‘noise’ on a power line.
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.
CNN interrupted for devastating Elon Musk news amid Donald Trump showdown - Irish Star
Edit 2024–10.
It also is a device that limits the change in current flow.
He then describes the function of a fuse.
Eyeglasses With Built-In Hearing Aids: This Just Makes Sense - WSJ
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.
One is “what exactly is in a ‘surge protector’ ? ”
2024–10–11 [Victor Olarewsju Victor Olarewaju ]
But it can get overloaded, and no longer works.
It’s been three xxx five werks, and there has been no response to my follow on query on his Commment to my answer.
If the nominal power is 4,000 watts then the current at 230volts is 16 amps.
Fuses, on their own, then operate much slower than the MOV variable resistance, during the lightning strike.
These devices are installed between the “hot” and “neutral” and protective ground.
One
Now when you have a certain ac resistance, then a current flows in a loop.
but this device (an Inductor) … impedes the rapid changes in the current.
2024–10–14 [Omar Gharbi Omar Gharbi ]
He then asserts :
For this case there are devices called Metal oxide varistors (MOV).
I post the exact comment here.
Upvotes:
So, the voltage could go up to 500 volts, and the fuse will not open up.
The other is “what does a “fuse” do?”
The MOV will conduct when the voltage exceeds 50% of line voltage.
[image of Common-mode choke]
An AC voltage/ current source, and an ac inductive load.
2024–10–10[John johnson John Johnson ]
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.
It seems Mohan does not understand the difference between a comment and an Answer.
The bolt then partially travels down the line to your home.
the problem then depends on "how fast does the fuse operate?".
These are simplified answers to the original question, and does not change anything I wrote above.
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?
(Dc diagram shown, AC is similar).
What does a fuse do?
Because the load is inductive, the current lags the voltage.(by a bit).
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).
In schematic diagrams this is the symbol for a fuse:
First Sentence:
There are two important concepts here.
But… the neutral is now “floating” because of the 1 ohm resistance.
“ … to protect building, lightning arrestor, is provided above building and directly connected to earth.”
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.
Mohan forgets that a fuse is a one-time device, and needs to be replaced if it is tripped.
“ 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”
Here is a simplified AC power diagram.
P = e* I, so since I is 16 amps, then the voltage dropped is 1/16 volt or 0.0650 volts.