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 03:22
“ … to protect building, lightning arrestor, is provided above building and directly connected to earth.”
There are three different concepts here that are getting confused.
What does a fuse do?
Injuries force USMNT to make roster changes as the Gold Cup nears - The Washington Post
It also is a device that limits the change in current flow.
2024–10–11 [Victor Olarewsju Victor Olarewaju ]
He then asserts :
Former Clemson DB on College Football Hall of Fame ballot - TigerNet
I post the exact comment here.
Edit 2024–10.
So, it’s possible that these devices from Trip Lite have addition suppression devices, these ones seem to be sturdy.
Miley Cyrus Reveals What Caused Her Estrangement from Dad Billy Ray for the First Time - instyle.com
Barnstars:
This is 'the assistant's answer'
Would individual surge supressors have save this equipment? most likely, since the surge supressor would take the jolt instead of the electronic components.
a photo is worth a thousand words.
These devices are installed between the “hot” and “neutral” and protective ground.
2024–10–10[John johnson John Johnson ]
Does CloudFlare protect blackhat sites from DDOS attacks?
When the current is 200% of the rated value , it will “go open” (the link metal melts) and protect the device.
Is the question then , "why buy a surge supressor, if the fuse alone protects the electronic circuits from a lightning bolt?".
P = e* I, so since I is 16 amps, then the voltage dropped is 1/16 volt or 0.0650 volts.
But… the neutral is now “floating” because of the 1 ohm resistance.
These are simplified answers to the original question, and does not change anything I wrote above.
At one ohm, the resistor has a maximum of 1 watt power.
Can a twin flame runner be happy in a karmic relationship?
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.
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.
Apple’s latest AirPods Pro with USB-C just received a $70 discount - The Verge
This is where the MOV conducts again, and dissipated the energy.
nine
One
Export Your Microsoft Authenticator Passwords Before They Get Deleted - Lifehacker
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.
“ 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”
Witcher 4 Coming To State Of Unreal Event Tomorrow, Here's How To Watch - GameSpot
He then describes the function of a fuse.
For this case there are devices called Metal oxide varistors (MOV).
But during the surge, the fuse will not blow if it is a longer duration and lower value )10 to 50%).
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 fuse is a non-resetable over current circuit 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.
Any straight men had a gay experience in the past? What was it and how did you feel?
It seems Mohan does not understand the difference between a comment and an Answer.
(There is no concept of polarity, in the loop because the current changes direction 100 to 120 times a second (power frequency).
what exactly is a ‘surge’ protector?
eight
“ A fuse is a device which protects the (circuit) against overload and short circuit.”
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?
but I think this circuit , shows a few more pieces.
This is where this question deviates from being a 'generic' question, and becomes more specific.
It’s been three xxx five werks, and there has been no response to my follow on query on his Commment to my answer.
OK, this is Mohan Rajaratnam’s definition of a Surge suppressor.
But it can get overloaded, and no longer works.
So, the voltage could go up to 500 volts, and the fuse will not open up.
2024–10–00 [ Ammar Mahdi ] Ammar Mahdi
(Dc diagram shown, AC is similar).
A circuit breaker is similar, but is resettable.
What is lightning?
The other is “what does a “fuse” do?”
Upvotes:
2024–10–14 [Omar Gharbi Omar Gharbi ]
One is “what exactly is in a ‘surge protector’ ? ”
the problem then depends on "how fast does the fuse operate?".
Now when you have a certain ac resistance, then a current flows in a loop.
The MOV will conduct when the voltage exceeds 50% of line voltage.
He then describes Rainy Season and Lightning.
so, what happens?
An AC voltage/ current source, and an ac inductive load.
This is the picture of an electronic coil of wire wound around a core of magnetic material.
Because the load is inductive, the current lags the voltage.(by a bit).
2024–10–11 [Bobby Sanchez Bobby Sanchez ].
Can the fuse protect the electronic devices from lightning instead of a surge protector.
Mohan forgets that a fuse is a one-time device, and needs to be replaced if it is tripped.
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.
At least they know the answer if they wanted it.
The third is lightning and “how it gets conducted into a home.”
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.
2024–10–16 [ OO OLAOYE OYEBODE ]
This one hit behind the barn.
Here is a simplified AC power diagram.
The bolt then partially travels down the line to your home.
but this device (an Inductor) … impedes the rapid changes in the current.
In schematic diagrams this is the symbol for a fuse:
First Sentence:
There are two important concepts here.
This device then solves the entire problem.
[image of Common-mode choke]
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.
[old diagram got deleted by accident]
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.
So combined with a device called a MOV or Metal-oxide-resistor, then forms the 3rd part of a “surge suppressor “.