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: 29.06.2025 07:21
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.
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.
[image of Common-mode choke]
Why would the United States need a fleet of the F-47 fighter jet fielded in the 2030s?
This is where this question deviates from being a 'generic' question, and becomes more specific.
This is the picture of an electronic coil of wire wound around a core of magnetic material.
Upvotes:
Why do men prefer women below the age of 30?
But… the neutral is now “floating” because of the 1 ohm resistance.
2024–10–11 [Bobby Sanchez Bobby Sanchez ].
The third is lightning and “how it gets conducted into a home.”
Powerful solar telescope unveils ultra-fine magnetic 'curtains' on the sun's surface - Space
[old diagram got deleted by accident]
so, the loop of wire then, when put together with another loop reduces the ‘noise’ on a power line.
Mohan forgets that a fuse is a one-time device, and needs to be replaced if it is tripped.
Which is a good budget sunscreen for my oily skin?
So combined with a device called a MOV or Metal-oxide-resistor, then forms the 3rd part of a “surge suppressor “.
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.
Can the fuse protect the electronic devices from lightning instead of a surge protector.
Here is a simplified AC power diagram.
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.
Patti LuPone stuns Broadway as The Apologizer - AV Club
He then describes the function of a fuse.
What does a fuse do?
These devices are installed between the “hot” and “neutral” and protective ground.
If the nominal power is 4,000 watts then the current at 230volts is 16 amps.
It seems Mohan does not understand the difference between a comment and an Answer.
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?
Turn This ChatGPT Prompt Into A Six-Figure Passive Income Stream - Forbes
Is the question then , "why buy a surge supressor, if the fuse alone protects the electronic circuits from a lightning bolt?".
Fuses, on their own, then operate much slower than the MOV variable resistance, during the lightning strike.
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.
Treasury Secretary Busts ‘Alarmist’ Inflation Predictions - The Daily Wire
I post the exact comment here.
eight
OK, this is Mohan Rajaratnam’s definition of a Surge suppressor.
Why is Reddit blocked by the Indonesian government?
A fuse is a non-resetable over current circuit protector.
For this case there are devices called Metal oxide varistors (MOV).
This is 'the assistant's answer'
Is AI secretly replacing your job right now without you knowing it? What do you think? Do you agree?
This one hit behind the barn.
(There is no concept of polarity, in the loop because the current changes direction 100 to 120 times a second (power frequency).
2024–10–11 [Victor Olarewsju Victor Olarewaju ]
There are two important concepts here.
Because the load is inductive, the current lags the voltage.(by a bit).
but this device (an Inductor) … impedes the rapid changes in the current.
If people in the UK hate Trump so much, why does he own golf courses there?
One
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.
The MOV will conduct when the voltage exceeds 50% of line voltage.
How to watch George Clooney in ‘Good Night, and Good Luck’ live for free - New York Post
“ A fuse is a device which protects the (circuit) against overload and short circuit.”
This is where the MOV conducts again, and dissipated the energy.
When the current is 200% of the rated value , it will “go open” (the link metal melts) and protect the device.
‘Borderlands 4’ Is Now My Most-Anticipated Game Of The Year - Forbes
“ … to protect building, lightning arrestor, is provided above building and directly connected to earth.”
so, what happens?
What is lightning?
Would individual surge supressors have save this equipment? most likely, since the surge supressor would take the jolt instead of the electronic components.
the problem then depends on "how fast does the fuse operate?".
2024–10–16 [ OO OLAOYE OYEBODE ]
At least they know the answer if they wanted it.
So, it’s possible that these devices from Trip Lite have addition suppression devices, these ones seem to be sturdy.
At one ohm, the resistor has a maximum of 1 watt power.
These are simplified answers to the original question, and does not change anything I wrote above.
a photo is worth a thousand words.
He then asserts :
So, the voltage could go up to 500 volts, and the fuse will not open up.
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 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”
but I think this circuit , shows a few more pieces.
P = e* I, so since I is 16 amps, then the voltage dropped is 1/16 volt or 0.0650 volts.
This device then solves the entire problem.
Edit 2024–10.
A circuit breaker is similar, but is resettable.
First Sentence:
It also is a device that limits the change in current flow.
But during the surge, the fuse will not blow if it is a longer duration and lower value )10 to 50%).
An AC voltage/ current source, and an ac inductive load.
2024–10–10[John johnson John Johnson ]
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.
The bolt then partially travels down the line to your home.
But it can get overloaded, and no longer works.
He then describes Rainy Season and Lightning.
Now when you have a certain ac resistance, then a current flows in a loop.
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.
The other is “what does a “fuse” do?”
Barnstars:
nine
There are three different concepts here that are getting confused.
(Dc diagram shown, AC is similar).
what exactly is a ‘surge’ protector?
In schematic diagrams this is the symbol for a fuse:
One is “what exactly is in a ‘surge protector’ ? ”
2024–10–14 [Omar Gharbi Omar Gharbi ]