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?
10.06.2025 01:43
Barnstars:
What does a fuse do?
At one ohm, the resistor has a maximum of 1 watt power.
What is your best forbidden sex story that felt so right?
The MOV will conduct when the voltage exceeds 50% of line voltage.
the problem then depends on "how fast does the fuse operate?".
This is 'the assistant's answer'
I'm pretty sure that my dog is transgender, how would I go about transitioning it?
So, it’s possible that these devices from Trip Lite have addition suppression devices, these ones seem to be sturdy.
But it can get overloaded, and no longer works.
Now when you have a certain ac resistance, then a current flows in a loop.
Scientists discover a 33-foot Jurassic giant, twice as big as its cousin - Earth.com
The other is “what does a “fuse” do?”
There are two important concepts here.
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.
So, the voltage could go up to 500 volts, and the fuse will not open up.
This is where this question deviates from being a 'generic' question, and becomes more specific.
It also is a device that limits the change in current flow.
After delay, man accused of killing Jonathan Joss released from jail - San Antonio Express-News
but I think this circuit , shows a few more pieces.
2024–10–14 [Omar Gharbi Omar Gharbi ]
The third is lightning and “how it gets conducted into a home.”
A Japanese lander crashed on the Moon after losing track of its location - Ars Technica
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.
One
If the nominal power is 4,000 watts then the current at 230volts is 16 amps.
[image of Common-mode choke]
This one hit behind the barn.
2024–10–11 [Victor Olarewsju Victor Olarewaju ]
Why is Taylor Swift re-recording her albums?
2024–10–11 [Bobby Sanchez Bobby Sanchez ].
At least they know the answer if they wanted it.
A fuse is a non-resetable over current circuit protector.
How to watch Apple’s WWDC 2025 keynote - TechCrunch
so, the loop of wire then, when put together with another loop reduces the ‘noise’ on a power line.
He then describes Rainy Season and Lightning.
It’s been three xxx five werks, and there has been no response to my follow on query on his Commment to my answer.
What does 'Whose flesh is like the flesh of donkeys’ mean (Ezekiel 23:20)?
Fuses, on their own, then operate much slower than the MOV variable resistance, during the lightning strike.
Can the fuse protect the electronic devices from lightning instead of a surge protector.
But… the neutral is now “floating” because of the 1 ohm resistance.
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.
(Dc diagram shown, AC is similar).
The bolt then partially travels down the line to your home.
Why do people who were very kind and loving once become cold-hearted?
2024–10–16 [ OO OLAOYE OYEBODE ]
When the current is 200% of the rated value , it will “go open” (the link metal melts) and protect the device.
First Sentence:
What is the reason behind some people wearing trunks instead of speedos when swimming in pools?
So combined with a device called a MOV or Metal-oxide-resistor, then forms the 3rd part of a “surge suppressor “.
so, what happens?
Here is a simplified AC power diagram.
what exactly is a ‘surge’ protector?
A circuit breaker is similar, but is resettable.
Upvotes:
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.
An AC voltage/ current source, and an ac inductive load.
nine
eight
There are three different concepts here that are getting confused.
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.
[old diagram got deleted by accident]
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.
In schematic diagrams this is the symbol for a fuse:
He then describes the function of a fuse.
But during the surge, the fuse will not blow if it is a longer duration and lower value )10 to 50%).
a photo is worth a thousand words.
but this device (an Inductor) … impedes the rapid changes in the current.
This device then solves the entire problem.
This is the picture of an electronic coil of wire wound around a core of magnetic material.
These devices are installed between the “hot” and “neutral” and protective ground.
2024–10–10[John johnson John Johnson ]
Edit 2024–10.
He then asserts :
And this is the problem alone. Is the power supply in the equipmemt designed with a lightning strike in mind? Some yes, others, no.
OK, this is Mohan Rajaratnam’s definition of a Surge suppressor.
One is “what exactly is in a ‘surge protector’ ? ”
I post the exact comment here.
“ … to protect building, lightning arrestor, is provided above building and directly connected to earth.”
(There is no concept of polarity, in the loop because the current changes direction 100 to 120 times a second (power frequency).
Because the load is inductive, the current lags the voltage.(by a bit).
It seems Mohan does not understand the difference between a comment and an Answer.
Would individual surge supressors have save this equipment? most likely, since the surge supressor would take the jolt instead of the electronic components.
These are simplified answers to the original question, and does not change anything I wrote above.
Is the question then , "why buy a surge supressor, if the fuse alone protects the electronic circuits from a lightning bolt?".
2024–10–00 [ Ammar Mahdi ] Ammar Mahdi
“ A fuse is a device which protects the (circuit) against overload and short circuit.”
What is lightning?
“ 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”
P = e* I, so since I is 16 amps, then the voltage dropped is 1/16 volt or 0.0650 volts.
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?
Mohan forgets that a fuse is a one-time device, and needs to be replaced if it is tripped.
This is where the MOV conducts again, and dissipated the energy.
For this case there are devices called Metal oxide varistors (MOV).
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.