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?
08.06.2025 02:47
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.
This is where this question deviates from being a 'generic' question, and becomes more specific.
So combined with a device called a MOV or Metal-oxide-resistor, then forms the 3rd part of a “surge suppressor “.
MAHA kids’ health report misinforms about tonsillectomies and ear tubes - statnews.com
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.
nine
Upvotes:
Samsung Nears Wide-Ranging Deal With Perplexity for AI Features - Bloomberg.com
Would individual surge supressors have save this equipment? most likely, since the surge supressor would take the jolt instead of the electronic components.
(Dc diagram shown, AC is similar).
In schematic diagrams this is the symbol for a fuse:
mRNA, once lauded as a scientific marvel, is now a government target - statnews.com
the problem then depends on "how fast does the fuse operate?".
Because the load is inductive, the current lags the voltage.(by a bit).
This one hit behind the barn.
Mormon Wives Come Together for Season 2 Reunion -- But One Major MokTok Member Is Missing! - TooFab
The MOV will conduct when the voltage exceeds 50% of line voltage.
Is the question then , "why buy a surge supressor, if the fuse alone protects the electronic circuits from a lightning bolt?".
One is “what exactly is in a ‘surge protector’ ? ”
People Who Have Been Stuck In A Coma Are Sharing What Happened, And Whoa - BuzzFeed
This is the picture of an electronic coil of wire wound around a core of magnetic material.
These are simplified answers to the original question, and does not change anything I wrote above.
So, it’s possible that these devices from Trip Lite have addition suppression devices, these ones seem to be sturdy.
If the nominal power is 4,000 watts then the current at 230volts is 16 amps.
He then describes the function of a fuse.
Edit 2024–10.
A fuse is a non-resetable over current circuit protector.
It’s been three xxx five werks, and there has been no response to my follow on query on his Commment to my answer.
2024–10–11 [Bobby Sanchez Bobby Sanchez ].
2025 NCAA baseball bracket: Men's College World Series scores, schedule - NCAA.com
An AC voltage/ current source, and an ac inductive load.
but I think this circuit , shows a few more pieces.
2024–10–14 [Omar Gharbi Omar Gharbi ]
Google Maps updated with new bottom corner logo - 9to5Google
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 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.
What does a fuse do?
MIT Discovers Magnetic Superconductor in Pencil Lead - SciTechDaily
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?
Fuses, on their own, then operate much slower than the MOV variable resistance, during the lightning strike.
So, the voltage could go up to 500 volts, and the fuse will not open up.
Pacers’ Tyrese Haliburton stuns Thunder in last second to open NBA Finals - The Washington Post
But it can get overloaded, and no longer works.
This is where the MOV conducts again, and dissipated the energy.
(There is no concept of polarity, in the loop because the current changes direction 100 to 120 times a second (power frequency).
What are some funny stories of people calling 911 for non-emergencies?
But… the neutral is now “floating” because of the 1 ohm resistance.
Mohan forgets that a fuse is a one-time device, and needs to be replaced if it is tripped.
what exactly is a ‘surge’ protector?
At least they know the answer if they wanted it.
He then asserts :
eight
It seems Mohan does not understand the difference between a comment and an Answer.
a photo is worth a thousand words.
These devices are installed between the “hot” and “neutral” and protective ground.
The other is “what does a “fuse” do?”
“ … to protect building, lightning arrestor, is provided above building and directly connected to earth.”
OK, this is Mohan Rajaratnam’s definition of a Surge suppressor.
2024–10–10[John johnson John Johnson ]
A circuit breaker is similar, but is resettable.
“ A fuse is a device which protects the (circuit) against overload and short circuit.”
And this is the problem alone. Is the power supply in the equipmemt designed with a lightning strike in mind? Some yes, others, no.
Now when you have a certain ac resistance, then a current flows in a loop.
For this case there are devices called Metal oxide varistors (MOV).
so, the loop of wire then, when put together with another loop reduces the ‘noise’ on a power line.
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.
[old diagram got deleted by accident]
[image of Common-mode choke]
The third is lightning and “how it gets conducted into a home.”
but this device (an Inductor) … impedes the rapid changes in the current.
The bolt then partially travels down the line to your home.
2024–10–16 [ OO OLAOYE OYEBODE ]
“ 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”
so, what happens?
But during the surge, the fuse will not blow if it is a longer duration and lower value )10 to 50%).
There are two important concepts here.
Can the fuse protect the electronic devices from lightning instead of a surge protector.
I post the exact comment here.
One
2024–10–11 [Victor Olarewsju Victor Olarewaju ]
First Sentence:
There are three different concepts here that are getting confused.
Barnstars:
Here is a simplified AC power diagram.
He then describes Rainy Season and Lightning.
It also is a device that limits the change in current flow.
At one ohm, the resistor has a maximum of 1 watt power.
What is lightning?
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 'the assistant's answer'
When the current is 200% of the rated value , it will “go open” (the link metal melts) and protect the device.
P = e* I, so since I is 16 amps, then the voltage dropped is 1/16 volt or 0.0650 volts.
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.
2024–10–00 [ Ammar Mahdi ] Ammar Mahdi
This device then solves the entire problem.