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: 03.07.2025 00:12
Edit 2024–10.
Mohan forgets that a fuse is a one-time device, and needs to be replaced if it is tripped.
Fuses, on their own, then operate much slower than the MOV variable resistance, during the lightning strike.
Adam Silver Talks NBA Expansion - Blazer's Edge
This is 'the assistant's answer'
The bolt then partially travels down the line to your home.
nine
Microbiome: First bacteria we meet can keep us out of hospital - BBC
This device then solves the entire problem.
Can the fuse protect the electronic devices from lightning instead of a surge protector.
What does a fuse do?
Trump administration, for 1st time, returns wrongly deported migrant to US - ABC News
The other is “what does a “fuse” do?”
He then describes the function of a fuse.
I post the exact comment here.
If the nominal power is 4,000 watts then the current at 230volts is 16 amps.
Now when you have a certain ac resistance, then a current flows in a loop.
He then asserts :
What are the upcoming trends in artificial intelligence and machine learning?
When the current is 200% of the rated value , it will “go open” (the link metal melts) and protect the device.
But during the surge, the fuse will not blow if it is a longer duration and lower value )10 to 50%).
But… the neutral is now “floating” because of the 1 ohm resistance.
Scientists find proof that birds nested in the Arctic alongside dinosaurs - Earth.com
This one hit behind the barn.
2024–10–00 [ Ammar Mahdi ] Ammar Mahdi
At one ohm, the resistor has a maximum of 1 watt power.
Childhood Trauma Rewires the Brain Through Inflammation - Neuroscience News
In schematic diagrams this is the symbol for a fuse:
(Dc diagram shown, AC is similar).
So, the voltage could go up to 500 volts, and the fuse will not open up.
As an inmate did you have to live alongside a bully for your whole sentence?
For this case there are devices called Metal oxide varistors (MOV).
It seems Mohan does not understand the difference between a comment and an Answer.
eight
JWST captures its most extreme gravitational lens ever - Big Think
2024–10–14 [Omar Gharbi Omar Gharbi ]
It’s been three xxx five werks, and there has been no response to my follow on query on his Commment to my answer.
Is the question then , "why buy a surge supressor, if the fuse alone protects the electronic circuits from a lightning bolt?".
Have you ever secretly watched someone while they were doing something private?
So combined with a device called a MOV or Metal-oxide-resistor, then forms the 3rd part of a “surge suppressor “.
2024–10–11 [Bobby Sanchez Bobby Sanchez ].
At least they know the answer if they wanted it.
Why do some women squirt and some don't?
And this is the problem alone. Is the power supply in the equipmemt designed with a lightning strike in mind? Some yes, others, no.
Because the load is inductive, the current lags the voltage.(by a bit).
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.
Why do people who were very kind and loving once become cold-hearted?
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 this device (an Inductor) … impedes the rapid changes in the current.
the problem then depends on "how fast does the fuse operate?".
The MOV will conduct when the voltage exceeds 50% of line voltage.
This is where this question deviates from being a 'generic' question, and becomes more specific.
It also is a device that limits the change in current flow.
Why do I feel bad when I see white girls dating black guys, am I racist?
But it can get overloaded, and no longer works.
P = e* I, so since I is 16 amps, then the voltage dropped is 1/16 volt or 0.0650 volts.
(There is no concept of polarity, in the loop because the current changes direction 100 to 120 times a second (power frequency).
Has your mother ever walked in on you at an inappropriate time?
There are three different concepts here that are getting confused.
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.
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?
The third is lightning and “how it gets conducted into a home.”
There are two important concepts here.
[old diagram got deleted by accident]
An AC voltage/ current source, and an ac inductive load.
A circuit breaker is similar, but is resettable.
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.
Upvotes:
One is “what exactly is in a ‘surge protector’ ? ”
“ A fuse is a device which protects the (circuit) against overload and short circuit.”
[image of Common-mode choke]
OK, this is Mohan Rajaratnam’s definition of a Surge suppressor.
but I think this circuit , shows a few more pieces.
A fuse is a non-resetable over current circuit protector.
What is lightning?
a photo is worth a thousand words.
“ … to protect building, lightning arrestor, is provided above building and directly connected to earth.”
This is the picture of an electronic coil of wire wound around a core of magnetic material.
so, what happens?
2024–10–11 [Victor Olarewsju Victor Olarewaju ]
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.
First Sentence:
One
Barnstars:
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.
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.
2024–10–16 [ OO OLAOYE OYEBODE ]
2024–10–10[John johnson John Johnson ]
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.
Here is a simplified AC power diagram.
This is where the MOV conducts again, and dissipated the energy.
He then describes Rainy Season and Lightning.
Would individual surge supressors have save this equipment? most likely, since the surge supressor would take the jolt instead of the electronic components.
so, the loop of wire then, when put together with another loop reduces the ‘noise’ on a power line.
These devices are installed between the “hot” and “neutral” and protective ground.
what exactly is a ‘surge’ protector?
“ 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”