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: 30.06.2025 05:27
So, it’s possible that these devices from Trip Lite have addition suppression devices, these ones seem to be sturdy.
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.
What do porn stars do when they get old?
2024–10–16 [ OO OLAOYE OYEBODE ]
At least they know the answer if they wanted it.
So, the voltage could go up to 500 volts, and the fuse will not open up.
How can a person develop advanced brain power?
Here is a simplified AC power diagram.
The other is “what does a “fuse” do?”
It’s been three xxx five werks, and there has been no response to my follow on query on his Commment to my answer.
Why does the UK Labour MP Jess Philips seem to be such a divisive figure?
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.
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.
As it happened: GC showdown in the high mountains at stage 7 of Critérium du Dauphiné - Cyclingnews
These devices are installed between the “hot” and “neutral” and protective ground.
Barnstars:
It seems Mohan does not understand the difference between a comment and an Answer.
The Earth Shook Every 90 Seconds for 9 Days in 2023 – Scientists Finally Know Why - SciTechDaily
2024–10–11 [Victor Olarewsju Victor Olarewaju ]
A circuit breaker is similar, but is resettable.
But it can get overloaded, and no longer works.
Is the question then , "why buy a surge supressor, if the fuse alone protects the electronic circuits from a lightning bolt?".
In schematic diagrams this is the symbol for a fuse:
And this is the problem alone. Is the power supply in the equipmemt designed with a lightning strike in mind? Some yes, others, no.
New map shows Bay Area locations with highest risk of ember-driven wildfires - East Bay Times
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 where this question deviates from being a 'generic' question, and becomes more specific.
When the current is 200% of the rated value , it will “go open” (the link metal melts) and protect the device.
Nintendo Switch 2’s faster chip can dramatically improve original Switch games - Ars Technica
For this case there are devices called Metal oxide varistors (MOV).
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.
A fuse is a non-resetable over current circuit protector.
Scientists Unveil a Method to Give Every Human the Ability to See in the Dark - The Daily Galaxy
2024–10–11 [Bobby Sanchez Bobby Sanchez ].
Mohan forgets that a fuse is a one-time device, and needs to be replaced if it is tripped.
I post the exact comment here.
Winners, losers from NASCAR Cup race at Nashville won by Ryan Blaney - NBC Sports
He then describes the function of a fuse.
so, the loop of wire then, when put together with another loop reduces the ‘noise’ on a power line.
so, what happens?
2024–10–10[John johnson John Johnson ]
OK, this is Mohan Rajaratnam’s definition of a Surge suppressor.
An AC voltage/ current source, and an ac inductive load.
Would individual surge supressors have save this equipment? most likely, since the surge supressor would take the jolt instead of the electronic components.
There are two important concepts here.
One is “what exactly is in a ‘surge protector’ ? ”
“ A fuse is a device which protects the (circuit) against overload and short circuit.”
[old diagram got deleted by accident]
But… the neutral is now “floating” because of the 1 ohm resistance.
2024–10–14 [Omar Gharbi Omar Gharbi ]
Can the fuse protect the electronic devices from lightning instead of a surge protector.
One
Now when you have a certain ac resistance, then a current flows in a loop.
(Dc diagram shown, AC is similar).
He then describes Rainy Season and Lightning.
what exactly is a ‘surge’ protector?
Because the load is inductive, the current lags the voltage.(by a bit).
This is where the MOV conducts again, and dissipated the energy.
“ 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”
a photo is worth a thousand words.
eight
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.
The bolt then partially travels down the line to your home.
What is lightning?
It also is a device that limits the change in current flow.
Fuses, on their own, then operate much slower than the MOV variable resistance, during the lightning strike.
First Sentence:
“ … to protect building, lightning arrestor, is provided above building and directly connected to earth.”
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?
Upvotes:
(There is no concept of polarity, in the loop because the current changes direction 100 to 120 times a second (power frequency).
This device then solves the entire problem.
This is the picture of an electronic coil of wire wound around a core of magnetic material.
He then asserts :
the problem then depends on "how fast does the fuse operate?".
This is 'the assistant's answer'
What does a fuse do?
At one ohm, the resistor has a maximum of 1 watt power.
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.
So combined with a device called a MOV or Metal-oxide-resistor, then forms the 3rd part of a “surge suppressor “.
2024–10–00 [ Ammar Mahdi ] Ammar Mahdi
But during the surge, the fuse will not blow if it is a longer duration and lower value )10 to 50%).
nine
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.
Edit 2024–10.
The MOV will conduct when the voltage exceeds 50% of line voltage.
If the nominal power is 4,000 watts then the current at 230volts is 16 amps.
but this device (an Inductor) … impedes the rapid changes in the current.
This one hit behind the barn.
The third is lightning and “how it gets conducted into a home.”
P = e* I, so since I is 16 amps, then the voltage dropped is 1/16 volt or 0.0650 volts.
[image of Common-mode choke]