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: 24.06.2025 02:12
This is the picture of an electronic coil of wire wound around a core of magnetic material.
P = e* I, so since I is 16 amps, then the voltage dropped is 1/16 volt or 0.0650 volts.
In schematic diagrams this is the symbol for a fuse:
'City-Killer' Asteroid Even More Likely to Hit The Moon in 2032 - ScienceAlert
(There is no concept of polarity, in the loop because the current changes direction 100 to 120 times a second (power frequency).
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.
There are three different concepts here that are getting confused.
CM Punk makes John Cena’s WWE title reign interesting by delivering the Truth - Cageside Seats
But… the neutral is now “floating” because of the 1 ohm resistance.
“ 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”
Would individual surge supressors have save this equipment? most likely, since the surge supressor would take the jolt instead of the electronic components.
Russell's F1 Canadian GP win in doubt after Red Bull protest - Autosport
It seems Mohan does not understand the difference between a comment and an Answer.
At least they know the answer if they wanted it.
The third is lightning and “how it gets conducted into a home.”
Poor appetite? What that can mean and how to get hungry again - The Washington Post
2024–10–11 [Bobby Sanchez Bobby Sanchez ].
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 are two important concepts here.
Japanese culture: Is it true adult adoption is common in Japan?
Edit 2024–10.
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.
It’s been three xxx five werks, and there has been no response to my follow on query on his Commment to my answer.
Popular Processed Foods Linked to Early Signs of Parkinson’s Disease - SciTechDaily
2024–10–11 [Victor Olarewsju Victor Olarewaju ]
but this device (an Inductor) … impedes the rapid changes in the current.
This one hit behind the barn.
So, it’s possible that these devices from Trip Lite have addition suppression devices, these ones seem to be sturdy.
(Dc diagram shown, AC is similar).
It also is a device that limits the change in current flow.
This is where the MOV conducts again, and dissipated the energy.
He then describes Rainy Season and Lightning.
nine
NASA Goddard Center-wide Email - NASA Watch
I post the exact comment here.
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.
This is where this question deviates from being a 'generic' question, and becomes more specific.
what exactly is a ‘surge’ protector?
2024–10–14 [Omar Gharbi Omar Gharbi ]
A fuse is a non-resetable over current circuit protector.
Halo: Edge of Dawn | Cover Reveal | Halo - Official Site (en) - Halo Waypoint
so, what happens?
The MOV will conduct when the voltage exceeds 50% of line voltage.
So combined with a device called a MOV or Metal-oxide-resistor, then forms the 3rd part of a “surge suppressor “.
The #1 Anti-Inflammatory Diet Habit You Should Start, According to Dietitians - EatingWell
But during the surge, the fuse will not blow if it is a longer duration and lower value )10 to 50%).
This device then solves the entire problem.
Now when you have a certain ac resistance, then a current flows in a loop.
He then describes the function of a fuse.
Is the question then , "why buy a surge supressor, if the fuse alone protects the electronic circuits from a lightning bolt?".
[image of Common-mode choke]
An AC voltage/ current source, and an ac inductive load.
When the current is 200% of the rated value , it will “go open” (the link metal melts) and protect the device.
“ A fuse is a device which protects the (circuit) against overload and short circuit.”
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.
[old diagram got deleted by accident]
But it can get overloaded, and no longer works.
“ … to protect building, lightning arrestor, is provided above building and directly connected to earth.”
First Sentence:
Because the load is inductive, the current lags the voltage.(by a bit).
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.
Barnstars:
And this is the problem alone. Is the power supply in the equipmemt designed with a lightning strike in mind? Some yes, others, no.
so, the loop of wire then, when put together with another loop reduces the ‘noise’ on a power line.
For this case there are devices called Metal oxide varistors (MOV).
This is 'the assistant's answer'
If the nominal power is 4,000 watts then the current at 230volts is 16 amps.
2024–10–16 [ OO OLAOYE OYEBODE ]
a photo is worth a thousand words.
The other is “what does a “fuse” do?”
OK, this is Mohan Rajaratnam’s definition of a Surge suppressor.
the problem then depends on "how fast does the fuse operate?".
What does a fuse do?
A circuit breaker is similar, but is resettable.
These are simplified answers to the original question, and does not change anything I wrote above.
One is “what exactly is in a ‘surge protector’ ? ”
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?
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.
Mohan forgets that a fuse is a one-time device, and needs to be replaced if it is tripped.
These devices are installed between the “hot” and “neutral” and protective ground.
One
Can the fuse protect the electronic devices from lightning instead of a surge protector.
The bolt then partially travels down the line to your home.
Fuses, on their own, then operate much slower than the MOV variable resistance, during the lightning strike.
At one ohm, the resistor has a maximum of 1 watt power.
Upvotes:
So, the voltage could go up to 500 volts, and the fuse will not open up.
What is lightning?
He then asserts :
but I think this circuit , shows a few more pieces.
Here is a simplified AC power diagram.
2024–10–10[John johnson John Johnson ]
2024–10–00 [ Ammar Mahdi ] Ammar Mahdi
eight