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 04:55
It’s been three xxx five werks, and there has been no response to my follow on query on his Commment to my answer.
Edit 2024–10.
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.
What is one thing nice you did for someone today or something they did for you?
eight
2024–10–10[John johnson John Johnson ]
The MOV will conduct when the voltage exceeds 50% of line voltage.
Do older men realize that younger women usually do not prefer them?
But it can get overloaded, and no longer works.
but I think this circuit , shows a few more pieces.
Here is a simplified AC power diagram.
When the current is 200% of the rated value , it will “go open” (the link metal melts) and protect the device.
One is “what exactly is in a ‘surge protector’ ? ”
For this case there are devices called Metal oxide varistors (MOV).
What do you think is the #1 cause of why relationships nowadays don't seem to last long?
This device then solves the entire problem.
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.
This is where the MOV conducts again, and dissipated the energy.
What was your best revenge story?
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.
And this is the problem alone. Is the power supply in the equipmemt designed with a lightning strike in mind? Some yes, others, no.
These devices are installed between the “hot” and “neutral” and protective ground.
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.
Because the load is inductive, the current lags the voltage.(by a bit).
A circuit breaker is similar, but is resettable.
When reading can – and can't – help with mental health - BBC
What does a fuse do?
2024–10–14 [Omar Gharbi Omar Gharbi ]
I post the exact comment here.
What happens when you need emergency surgery in countries with universal healthcare vs the US?
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.
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.
OK, this is Mohan Rajaratnam’s definition of a Surge suppressor.
What are some cool confidence hacks?
There are two important concepts here.
In schematic diagrams this is the symbol for a fuse:
(Dc diagram shown, AC is similar).
In your humble opinion, why does the narcissist mistake kindness for weakness in some people?
If the nominal power is 4,000 watts then the current at 230volts is 16 amps.
2024–10–16 [ OO OLAOYE OYEBODE ]
But during the surge, the fuse will not blow if it is a longer duration and lower value )10 to 50%).
so, what happens?
Fuses, on their own, then operate much slower than the MOV variable resistance, during the lightning strike.
So, the voltage could go up to 500 volts, and the fuse will not open up.
What habits do happy couples have?
The third is lightning and “how it gets conducted into a home.”
He then asserts :
“ A fuse is a device which protects the (circuit) against overload and short circuit.”
Have husbands and wives ever had a threesome with someone in real life? How did it happen?
There are three different concepts here that are getting confused.
The bolt then partially travels down the line to your home.
He then describes the function of a fuse.
So combined with a device called a MOV or Metal-oxide-resistor, then forms the 3rd part of a “surge suppressor “.
a photo is worth a thousand words.
But… the neutral is now “floating” because of the 1 ohm resistance.
2024–10–00 [ Ammar Mahdi ] Ammar Mahdi
Upvotes:
[image of Common-mode choke]
what exactly is a ‘surge’ protector?
so, the loop of wire then, when put together with another loop reduces the ‘noise’ on a power line.
The other is “what does a “fuse” do?”
What is lightning?
It seems Mohan does not understand the difference between a comment and an Answer.
Barnstars:
It also is a device that limits the change in current flow.
Is the question then , "why buy a surge supressor, if the fuse alone protects the electronic circuits from a lightning bolt?".
but this device (an Inductor) … impedes the rapid changes in the current.
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?
So, it’s possible that these devices from Trip Lite have addition suppression devices, these ones seem to be sturdy.
These are simplified answers to the original question, and does not change anything I wrote above.
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.
nine
2024–10–11 [Victor Olarewsju Victor Olarewaju ]
A fuse is a non-resetable over current circuit protector.
An AC voltage/ current source, and an ac inductive load.
“ … to protect building, lightning arrestor, is provided above building and directly connected to earth.”
(There is no concept of polarity, in the loop because the current changes direction 100 to 120 times a second (power frequency).
He then describes Rainy Season and Lightning.
This one hit behind the barn.
Can the fuse protect the electronic devices from lightning instead of a surge protector.
At least they know the answer if they wanted it.
“ 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”
This is where this question deviates from being a 'generic' question, and becomes more specific.
At one ohm, the resistor has a maximum of 1 watt power.
the problem then depends on "how fast does the fuse operate?".
One
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:
This is the picture of an electronic coil of wire wound around a core of magnetic material.
Would individual surge supressors have save this equipment? most likely, since the surge supressor would take the jolt instead of the electronic components.
This is 'the assistant's answer'
[old diagram got deleted by accident]
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.