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?
13.06.2025 01:23
The MOV will conduct when the voltage exceeds 50% of line voltage.
At one ohm, the resistor has a maximum of 1 watt power.
Because the load is inductive, the current lags the voltage.(by a bit).
Would individual surge supressors have save this equipment? most likely, since the surge supressor would take the jolt instead of the electronic components.
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.
It also is a device that limits the change in current flow.
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?
2024–10–14 [Omar Gharbi Omar Gharbi ]
As measles spreads across the Americas, outbreaks in Mexico and Canada have also turned deadly - CNN
A fuse is a non-resetable over current circuit protector.
He then describes the function of a fuse.
I post the exact comment here.
George Clooney Reveals His Wife Amal’s Reaction When He Came Home With His New Hair - HuffPost
the problem then depends on "how fast does the fuse operate?".
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.
For this case there are devices called Metal oxide varistors (MOV).
These devices are installed between the “hot” and “neutral” and protective ground.
This one hit behind the barn.
Mohan forgets that a fuse is a one-time device, and needs to be replaced if it is tripped.
2024–10–00 [ Ammar Mahdi ] Ammar Mahdi
At least they know the answer if they wanted it.
Can the fuse protect the electronic devices from lightning instead of a surge protector.
Why would Trump make conspiracy claims that Haitians are eating pets in Ohio?
This is the picture of an electronic coil of wire wound around a core of magnetic material.
2024–10–11 [Victor Olarewsju Victor Olarewaju ]
There are two important concepts here.
but I think this circuit , shows a few more pieces.
“ 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”
The bolt then partially travels down the line to your home.
It seems Mohan does not understand the difference between a comment and an Answer.
eight
A circuit breaker is similar, but is resettable.
SEC Raises Legal Questions Over Proposed Ethereum, Solana ETFs - Decrypt
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.
Here is a simplified AC power diagram.
(There is no concept of polarity, in the loop because the current changes direction 100 to 120 times a second (power frequency).
Upvotes:
So combined with a device called a MOV or Metal-oxide-resistor, then forms the 3rd part of a “surge suppressor “.
One is “what exactly is in a ‘surge protector’ ? ”
2025 NFL All-Paid Team: Saquon Barkley, Dak Prescott headline top earners by position - NFL.com
but this device (an Inductor) … impedes the rapid changes in the current.
2024–10–16 [ OO OLAOYE OYEBODE ]
In schematic diagrams this is the symbol for a fuse:
The Biggest Game Releases Of June 2025 - GameSpot
He then describes Rainy Season and Lightning.
what exactly is a ‘surge’ protector?
But it can get overloaded, and no longer works.
What was the first Native American tribe to inhabit Long Island, NY?
What does a fuse do?
Is the question then , "why buy a surge supressor, if the fuse alone protects the electronic circuits from a lightning bolt?".
“ … to protect building, lightning arrestor, is provided above building and directly connected to earth.”
Elon Musk’s Neuralink closes a $650M Series E - TechCrunch
This is 'the assistant's answer'
[image of Common-mode choke]
Barnstars:
OK, this is Mohan Rajaratnam’s definition of a Surge suppressor.
Fuses, on their own, then operate much slower than the MOV variable resistance, during the lightning strike.
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.
So, it’s possible that these devices from Trip Lite have addition suppression devices, these ones seem to be sturdy.
There are three different concepts here that are getting confused.
But during the surge, the fuse will not blow if it is a longer duration and lower value )10 to 50%).
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.
[old diagram got deleted by accident]
This is where this question deviates from being a 'generic' question, and becomes more specific.
2024–10–11 [Bobby Sanchez Bobby Sanchez ].
When the current is 200% of the rated value , it will “go open” (the link metal melts) and protect the device.
(Dc diagram shown, AC is similar).
“ A fuse is a device which protects the (circuit) against overload and short circuit.”
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.
What is lightning?
a photo is worth a thousand words.
Now when you have a certain ac resistance, then a current flows in a loop.
P = e* I, so since I is 16 amps, then the voltage dropped is 1/16 volt or 0.0650 volts.
2024–10–10[John johnson John Johnson ]
Edit 2024–10.
One
He then asserts :
so, what happens?
This is where the MOV conducts again, and dissipated the energy.
The third is lightning and “how it gets conducted into a home.”
This device then solves the entire problem.
But… the neutral is now “floating” because of the 1 ohm resistance.
These are simplified answers to the original question, and does not change anything I wrote above.
The other is “what does a “fuse” do?”
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.
If the nominal power is 4,000 watts then the current at 230volts is 16 amps.
So, the voltage could go up to 500 volts, and the fuse will not open up.
It’s been three xxx five werks, and there has been no response to my follow on query on his Commment to my answer.
First Sentence:
nine
An AC voltage/ current source, and an ac inductive load.
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.