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: 22.06.2025 01:37
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?
And this is the problem alone. Is the power supply in the equipmemt designed with a lightning strike in mind? Some yes, others, no.
Fuses, on their own, then operate much slower than the MOV variable resistance, during the lightning strike.
2024–10–00 [ Ammar Mahdi ] Ammar Mahdi
(Dc diagram shown, AC is similar).
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 Fastest Speed That Humans Have Traveled Is 39,937.7 Kilometers Per Hour - IFLScience
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.
One is “what exactly is in a ‘surge protector’ ? ”
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.
The Best Deals Today: Pokémon TCG: Destined Rivals Crashes and More - IGN
An AC voltage/ current source, and an ac inductive load.
What does a fuse do?
2024–10–16 [ OO OLAOYE OYEBODE ]
Why would a person who is educated and skillful still find it hard to get a better job?
In schematic diagrams this is the symbol for a fuse:
Upvotes:
the problem then depends on "how fast does the fuse operate?".
Veteran strategist unveils updated gold price forecast - TheStreet
I post the exact comment here.
What is lightning?
So, the voltage could go up to 500 volts, and the fuse will not open up.
Rashod Bateman Signs Contract Extension - Baltimore Ravens
But… the neutral is now “floating” because of the 1 ohm resistance.
what exactly is a ‘surge’ protector?
This device then solves the entire problem.
What is the best true Hollywood story you know?
“ … to protect building, lightning arrestor, is provided above building and directly connected to earth.”
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.
P = e* I, so since I is 16 amps, then the voltage dropped is 1/16 volt or 0.0650 volts.
US Inflation to Tick Higher as Tariffs Reach Consumers - Bloomberg
“ 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”
Edit 2024–10.
2024–10–10[John johnson John Johnson ]
Did Harry and Meghan really get what they wanted?
At one ohm, the resistor has a maximum of 1 watt power.
The MOV will conduct when the voltage exceeds 50% of line voltage.
The bolt then partially travels down the line to your home.
The third is lightning and “how it gets conducted into a home.”
This is where the MOV conducts again, and dissipated the energy.
If the nominal power is 4,000 watts then the current at 230volts is 16 amps.
How do you handle your mother-in-law after you heard her talking badly about you in the next room?
2024–10–11 [Victor Olarewsju Victor Olarewaju ]
[old diagram got deleted by accident]
so, what happens?
What are the best long-distance running shoes available in India?
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.
One
nine
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.
This is 'the assistant's answer'
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.
Here is a simplified AC power diagram.
There are three different concepts here that are getting confused.
but I think this circuit , shows a few more pieces.
At least they know the answer if they wanted it.
He then describes Rainy Season and Lightning.
so, the loop of wire then, when put together with another loop reduces the ‘noise’ on a power line.
[image of Common-mode choke]
First Sentence:
eight
But during the surge, the fuse will not blow if it is a longer duration and lower value )10 to 50%).
(There is no concept of polarity, in the loop because the current changes direction 100 to 120 times a second (power frequency).
This is where this question deviates from being a 'generic' question, and becomes more specific.
2024–10–14 [Omar Gharbi Omar Gharbi ]
but this device (an Inductor) … impedes the rapid changes in the current.
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.
It’s been three xxx five werks, and there has been no response to my follow on query on his Commment to my answer.
When the current is 200% of the rated value , it will “go open” (the link metal melts) and protect the device.
This is the picture of an electronic coil of wire wound around a core of magnetic material.
He then asserts :
He then describes the function of a fuse.
It also is a device that limits the change in current flow.
Because the load is inductive, the current lags the voltage.(by a bit).
A fuse is a non-resetable over current circuit protector.
a photo is worth a thousand words.
Can the fuse protect the electronic devices from lightning instead of a surge protector.
The other is “what does a “fuse” do?”
2024–10–11 [Bobby Sanchez Bobby Sanchez ].
But it can get overloaded, and no longer works.
OK, this is Mohan Rajaratnam’s definition of a Surge suppressor.
It seems Mohan does not understand the difference between a comment and an Answer.
A circuit breaker is similar, but is resettable.
“ A fuse is a device which protects the (circuit) against overload and short circuit.”
Barnstars:
Now when you have a certain ac resistance, then a current flows in a loop.
For this case there are devices called Metal oxide varistors (MOV).
So combined with a device called a MOV or Metal-oxide-resistor, then forms the 3rd part of a “surge suppressor “.
Mohan forgets that a fuse is a one-time device, and needs to be replaced if it is tripped.
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.
Is the question then , "why buy a surge supressor, if the fuse alone protects the electronic circuits from a lightning bolt?".
These devices are installed between the “hot” and “neutral” and protective ground.
This one hit behind the barn.