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: 01.07.2025 07:29
What is lightning?
There are two important concepts here.
And this is the problem alone. Is the power supply in the equipmemt designed with a lightning strike in mind? Some yes, others, no.
Can the fuse protect the electronic devices from lightning instead of a surge 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.
Mohan forgets that a fuse is a one-time device, and needs to be replaced if it is tripped.
Suspect in Boulder Molotov attack faces federal hate crime charge - Axios
So, the voltage could go up to 500 volts, and the fuse will not open up.
He then describes the function of a fuse.
[image of Common-mode choke]
What does a fuse do?
so, what happens?
One is “what exactly is in a ‘surge protector’ ? ”
the problem then depends on "how fast does the fuse operate?".
For this case there are devices called Metal oxide varistors (MOV).
2024–10–10[John johnson John Johnson ]
Two space vets added to Astronaut Hall of Fame as one awaits launch - collectSPACE.com
OK, this is Mohan Rajaratnam’s definition of a Surge suppressor.
He then asserts :
It also is a device that limits the change in current flow.
Who are some of the darkest skinned actors in Hollywood?
Here is a simplified AC power diagram.
It seems Mohan does not understand the difference between a comment and an Answer.
A fuse is a non-resetable over current circuit protector.
No One in the Movies Stays Dead Anymore - Yahoo
At least they know the answer if they wanted it.
A circuit breaker is similar, but is resettable.
This is the picture of an electronic coil of wire wound around a core of magnetic material.
What we know about the fireball seen across several states Thursday - WLTX
2024–10–14 [Omar Gharbi Omar Gharbi ]
Now when you have a certain ac resistance, then a current flows in a loop.
“ 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”
Are you worried that the 2024 US presidential election will result in a close race?
But it can get overloaded, and no longer works.
So combined with a device called a MOV or Metal-oxide-resistor, then forms the 3rd part of a “surge suppressor “.
These are simplified answers to the original question, and does not change anything I wrote above.
Forget Ray-Bans: The $399 Meta Oakley smart glasses are better in almost every way - ZDNET
nine
The other is “what does a “fuse” do?”
Edit 2024–10.
Important scientific finding confirms ancient biblical events - The Brighter Side of News
This is where this question deviates from being a 'generic' question, and becomes more specific.
This device then solves the entire problem.
eight
Free agent CB Rasul Douglas doesn’t think he’ll return to Green Bay - NBC Sports
(Dc diagram shown, AC is similar).
It’s been three xxx five werks, and there has been no response to my follow on query on his Commment to my answer.
Fuses, on their own, then operate much slower than the MOV variable resistance, during the lightning strike.
Mrtka said being drafted in the NHL was a dream come true - Audacy
Upvotes:
This is where the MOV conducts again, and dissipated the energy.
but this device (an Inductor) … impedes the rapid changes in the current.
MongoDB (NASDAQ:MDB) Reports Strong Q1, Stock Jumps 14.3% - Yahoo Finance
but I think this circuit , shows a few more pieces.
This one hit behind the barn.
When the current is 200% of the rated value , it will “go open” (the link metal melts) and protect the device.
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.
If the nominal power is 4,000 watts then the current at 230volts is 16 amps.
I post the exact comment here.
2024–10–16 [ OO OLAOYE OYEBODE ]
2024–10–11 [Bobby Sanchez Bobby Sanchez ].
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.
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 bolt then partially travels down the line to your home.
At one ohm, the resistor has a maximum of 1 watt power.
2024–10–11 [Victor Olarewsju Victor Olarewaju ]
2024–10–00 [ Ammar Mahdi ] Ammar Mahdi
First Sentence:
The third is lightning and “how it gets conducted into a home.”
“ … to protect building, lightning arrestor, is provided above building and directly connected to earth.”
a photo is worth a thousand words.
He then describes Rainy Season and Lightning.
These devices are installed between the “hot” and “neutral” and protective ground.
Barnstars:
[old diagram got deleted by accident]
“ A fuse is a device which protects the (circuit) against overload and short circuit.”
There are three different concepts here that are getting confused.
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.
In schematic diagrams this is the symbol for a fuse:
So, it’s possible that these devices from Trip Lite have addition suppression devices, these ones seem to be sturdy.
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.
Is the question then , "why buy a surge supressor, if the fuse alone protects the electronic circuits from a lightning bolt?".
so, the loop of wire then, when put together with another loop reduces the ‘noise’ on a power line.
But… the neutral is now “floating” because of the 1 ohm resistance.
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?
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.
But during the surge, the fuse will not blow if it is a longer duration and lower value )10 to 50%).
One
Because the load is inductive, the current lags the voltage.(by a bit).
An AC voltage/ current source, and an ac inductive load.
what exactly is a ‘surge’ protector?
Would individual surge supressors have save this equipment? most likely, since the surge supressor would take the jolt instead of the electronic components.
P = e* I, so since I is 16 amps, then the voltage dropped is 1/16 volt or 0.0650 volts.
This is 'the assistant's answer'
(There is no concept of polarity, in the loop because the current changes direction 100 to 120 times a second (power frequency).
The MOV will conduct when the voltage exceeds 50% of line voltage.