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: 21.06.2025 01:50
This is where the MOV conducts again, and dissipated the energy.
There are three different concepts here that are getting confused.
nine
Why are you a Muslim? Why is it Islam for you and not something else?
2024–10–11 [Victor Olarewsju Victor Olarewaju ]
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.
First Sentence:
Hegseth moves to rename Navy ship honoring gay rights icon Harvey Milk - The Washington Post
So, the voltage could go up to 500 volts, and the fuse will not open up.
So combined with a device called a MOV or Metal-oxide-resistor, then forms the 3rd part of a “surge suppressor “.
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.
How do I cut off friends that don't contribute to my life?
Mohan forgets that a fuse is a one-time device, and needs to be replaced if it is tripped.
[image of Common-mode choke]
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?
[old diagram got deleted by accident]
so, what happens?
When the current is 200% of the rated value , it will “go open” (the link metal melts) and protect the device.
What is lightning?
OK, this is Mohan Rajaratnam’s definition of a Surge suppressor.
Prescription risk: Meds that could cause dementia - WFMZ.com
Can the fuse protect the electronic devices from lightning instead of a surge protector.
An AC voltage/ current source, and an ac inductive load.
2024–10–11 [Bobby Sanchez Bobby Sanchez ].
Why do I feel worthless most of the time?
He then describes Rainy Season and Lightning.
Fuses, on their own, then operate much slower than the MOV variable resistance, during the lightning strike.
(Dc diagram shown, AC is similar).
P = e* I, so since I is 16 amps, then the voltage dropped is 1/16 volt or 0.0650 volts.
The other is “what does a “fuse” do?”
It also is a device that limits the change in current flow.
Do you think the constitution and laws should be taught in school?
Edit 2024–10.
This is the picture of an electronic coil of wire wound around a core of magnetic material.
At least they know the answer if they wanted it.
How do you get people to follow your Quora Space?
Because the load is inductive, the current lags the voltage.(by a bit).
This device then solves the entire problem.
what exactly is a ‘surge’ protector?
but this device (an Inductor) … impedes the rapid changes in the current.
This is 'the assistant's answer'
so, the loop of wire then, when put together with another loop reduces the ‘noise’ on a power line.
New COVID variant linked to painful ‘razor blade throat’ symptom - San Francisco Chronicle
In schematic diagrams this is the symbol for a fuse:
It seems Mohan does not understand the difference between a comment and an Answer.
Is the question then , "why buy a surge supressor, if the fuse alone protects the electronic circuits from a lightning bolt?".
Do narcissists love their children?
There are two important concepts here.
Now when you have a certain ac resistance, then a current flows in a loop.
A fuse is a non-resetable over current circuit protector.
(There is no concept of polarity, in the loop because the current changes direction 100 to 120 times a second (power frequency).
But during the surge, the fuse will not blow if it is a longer duration and lower value )10 to 50%).
2024–10–16 [ OO OLAOYE OYEBODE ]
the problem then depends on "how fast does the fuse operate?".
If the nominal power is 4,000 watts then the current at 230volts is 16 amps.
At one ohm, the resistor has a maximum of 1 watt power.
One
For this case there are devices called Metal oxide varistors (MOV).
The MOV will conduct when the voltage exceeds 50% of line voltage.
I post the exact comment here.
So, it’s possible that these devices from Trip Lite have addition suppression devices, these ones seem to be sturdy.
“ 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”
Here is a simplified AC power diagram.
but I think this circuit , shows a few more pieces.
These are simplified answers to the original question, and does not change anything I wrote above.
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.
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.
These devices are installed between the “hot” and “neutral” and protective ground.
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.
“ A fuse is a device which protects the (circuit) against overload and short circuit.”
2024–10–00 [ Ammar Mahdi ] Ammar Mahdi
Upvotes:
This one hit behind the barn.
Would individual surge supressors have save this equipment? most likely, since the surge supressor would take the jolt instead of the electronic components.
What does a fuse do?
The bolt then partially travels down the line to your home.
a photo is worth a thousand words.
This is where this question deviates from being a 'generic' question, and becomes more specific.
A circuit breaker is similar, but is resettable.
The third is lightning and “how it gets conducted into a home.”
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.
And this is the problem alone. Is the power supply in the equipmemt designed with a lightning strike in mind? Some yes, others, no.
“ … to protect building, lightning arrestor, is provided above building and directly connected to earth.”
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.
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.
He then asserts :
But it can get overloaded, and no longer works.
eight
2024–10–10[John johnson John Johnson ]
Barnstars:
He then describes the function of a fuse.
One is “what exactly is in a ‘surge protector’ ? ”