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: 23.06.2025 13:42
For this case there are devices called Metal oxide varistors (MOV).
If the nominal power is 4,000 watts then the current at 230volts is 16 amps.
What is lightning?
Australia's Qantas to close budget airline Jetstar Asia - BBC
So, it’s possible that these devices from Trip Lite have addition suppression devices, these ones seem to be sturdy.
Fuses, on their own, then operate much slower than the MOV variable resistance, during the lightning strike.
The third is lightning and “how it gets conducted into a home.”
Washington governor activates National Guard in search for accused killer, Travis Decker - KATU
One is “what exactly is in a ‘surge protector’ ? ”
It also is a device that limits the change in current flow.
He then describes Rainy Season and Lightning.
What lowers a fever the quickest?
This is the picture of an electronic coil of wire wound around a core of magnetic material.
So, the voltage could go up to 500 volts, and the fuse will not open up.
But… the neutral is now “floating” because of the 1 ohm resistance.
Sam Darnold on final games in Minnesota: "We laid an egg on offense" - NBC Sports
The bolt then partially travels down the line to your home.
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.
2024–10–14 [Omar Gharbi Omar Gharbi ]
This one hit behind the barn.
This is 'the assistant's answer'
a photo is worth a thousand words.
The other is “what does a “fuse” do?”
“ … to protect building, lightning arrestor, is provided above building and directly connected to earth.”
2024–10–11 [Bobby Sanchez Bobby Sanchez ].
Why do men like to have sex with a woman's ass?
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.
At one ohm, the resistor has a maximum of 1 watt power.
Barnstars:
This is where this question deviates from being a 'generic' question, and becomes more specific.
2024–10–00 [ Ammar Mahdi ] Ammar Mahdi
It’s been three xxx five werks, and there has been no response to my follow on query on his Commment to my answer.
Checkers Sweep Laval to Earn Trip to Calder Cup Finals - Charlotte Checkers Hockey
When the current is 200% of the rated value , it will “go open” (the link metal melts) and protect the device.
First Sentence:
Because the load is inductive, the current lags the voltage.(by a bit).
What is the difference between the terms "Millennials" and "kids"?
(Dc diagram shown, AC is similar).
One
P = e* I, so since I is 16 amps, then the voltage dropped is 1/16 volt or 0.0650 volts.
Denver Health sees increase in people getting MMR vaccine - 9News
A fuse is a non-resetable over current circuit protector.
He then describes the function of a fuse.
nine
Nintendo Switch 2: The Ars Technica review - Ars Technica
2024–10–11 [Victor Olarewsju Victor Olarewaju ]
So combined with a device called a MOV or Metal-oxide-resistor, then forms the 3rd part of a “surge suppressor “.
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?
Is anyone else losing complete respect for the US at this point?
These are simplified answers to the original question, and does not change anything I wrote above.
The MOV will conduct when the voltage exceeds 50% of line voltage.
In schematic diagrams this is the symbol for a fuse:
Do women wear undies under leggings?
but this device (an Inductor) … impedes the rapid changes in the current.
Would individual surge supressors have save this equipment? most likely, since the surge supressor would take the jolt instead of the electronic components.
He then asserts :
'Starship in space': See amazing photos from SpaceX megarocket's Flight 9 test mission - Space
[old diagram got deleted by accident]
At least they know the answer if they wanted it.
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.
I post the exact comment here.
eight
These devices are installed between the “hot” and “neutral” and protective ground.
Here is a simplified AC power diagram.
Mohan forgets that a fuse is a one-time device, and needs to be replaced if it is tripped.
the problem then depends on "how fast does the fuse operate?".
There are three different concepts here that are getting confused.
so, what happens?
[image of Common-mode choke]
what exactly is a ‘surge’ protector?
2024–10–10[John johnson John Johnson ]
This is where the MOV conducts again, and dissipated the energy.
Upvotes:
“ A fuse is a device which protects the (circuit) against overload and short circuit.”
This device then solves the entire problem.
But it can get overloaded, and no longer works.
There are two important concepts here.
“ 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”
(There is no concept of polarity, in the loop because the current changes direction 100 to 120 times a second (power frequency).
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.
It seems Mohan does not understand the difference between a comment and an Answer.
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.
but I think this circuit , shows a few more pieces.
An AC voltage/ current source, and an ac inductive load.
What does a fuse do?
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 ]
And this is the problem alone. Is the power supply in the equipmemt designed with a lightning strike in mind? Some yes, others, no.
A circuit breaker is similar, but is resettable.
Now when you have a certain ac resistance, then a current flows in a loop.
Can the fuse protect the electronic devices from lightning instead of a surge protector.
Edit 2024–10.
But during the surge, the fuse will not blow if it is a longer duration and lower value )10 to 50%).
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 a photo where a lightning bolt took out a home's complete mains distribution box, and a lot of electronic gear as well.