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?

what exactly is a ‘surge’ protector?

Barnstars:

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.

Ray Dalio: ‘We should be afraid of the bond market’ - CNN

There are three different concepts here that are getting confused.

When the current is 200% of the rated value , it will “go open” (the link metal melts) and protect the device.

So, the voltage could go up to 500 volts, and the fuse will not open up.

Space photo of the week: Pink 'raindrops' on the sun captured in greatest detail ever - Live Science

He then describes Rainy Season and Lightning.

“ A fuse is a device which protects the (circuit) against overload and short circuit.”

2024–10–11 [Victor Olarewsju Victor Olarewaju ]

R-Truth receives outpouring of support from WWE stars after stunning release: ‘Immeasurable’ void - New York Post

“ 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”

But… the neutral is now “floating” because of the 1 ohm resistance.

Here is a simplified AC power diagram.

Trump, DOJ threaten Calif. with legal action, fines after trans athlete’s win - The Washington Post

These are simplified answers to the original question, and does not change anything I wrote above.

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.

OK, this is Mohan Rajaratnam’s definition of a Surge suppressor.

Are you offended if Democrats call Republicans "weird"?

First Sentence:

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.

In schematic diagrams this is the symbol for a fuse:

Here's Where Traders Expect Broadcom Stock to Go After Earnings - Investopedia

What is lightning?

Now when you have a certain ac resistance, then a current flows in a loop.

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.

Is a monthly salary of 47,000 SEK before tax considered adequate for a C# .Net developer with over 7 years of experience in Sweden?

Can the fuse protect the electronic devices from lightning instead of a surge protector.

This is 'the assistant's answer'

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?

Toyota Industries' shares nosedive on $33 billion buyout deal — steepest fall in 10 months - CNBC

He then asserts :

[image of Common-mode choke]

This is where the MOV conducts again, and dissipated the energy.

Is it considered rude to comment on someone's weight? Is it simply stating a fact?

One is “what exactly is in a ‘surge protector’ ? ”

These devices are installed between the “hot” and “neutral” and protective ground.

So, it’s possible that these devices from Trip Lite have addition suppression devices, these ones seem to be sturdy.

How has your life changed for the past 10 years? Can you share your #10year challenge? Is your life better, worse, or still hopeful?

There are two important concepts here.

eight

Mohan forgets that a fuse is a one-time device, and needs to be replaced if it is tripped.

Do you have pics of the wife making out with another guy?

but this device (an Inductor) … impedes the rapid changes in the current.

2024–10–10[John johnson John Johnson ]

But during the surge, the fuse will not blow if it is a longer duration and lower value )10 to 50%).

The MOV will conduct when the voltage exceeds 50% of line voltage.

[old diagram got deleted by accident]

If the nominal power is 4,000 watts then the current at 230volts is 16 amps.

2024–10–00 [ Ammar Mahdi ] Ammar Mahdi

2024–10–16 [ OO OLAOYE OYEBODE ]

At one ohm, the resistor has a maximum of 1 watt power.

Is the question then , "why buy a surge supressor, if the fuse alone protects the electronic circuits from a lightning bolt?".

the problem then depends on "how fast does the fuse operate?".

Edit 2024–10.

(Dc diagram shown, AC is similar).

What does a fuse do?

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.

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.

The bolt then partially travels down the line to your home.

but I think this circuit , shows a few more pieces.

nine

I post the exact comment here.

(There is no concept of polarity, in the loop because the current changes direction 100 to 120 times a second (power frequency).

Fuses, on their own, then operate much slower than the MOV variable resistance, during the lightning strike.

Because the load is inductive, the current lags the voltage.(by a bit).

A fuse is a non-resetable over current circuit protector.

so, what happens?

2024–10–11 [Bobby Sanchez Bobby Sanchez ].

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.

For this case there are devices called Metal oxide varistors (MOV).

But it can get overloaded, and no longer works.

a photo is worth a thousand words.

A circuit breaker is similar, but is resettable.

This is where this question deviates from being a 'generic' question, and becomes more specific.

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 seems Mohan does not understand the difference between a comment and an Answer.

He then describes the function of a fuse.

“ … to protect building, lightning arrestor, is provided above building and directly connected to earth.”

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 device then solves the entire problem.

Upvotes:

This one hit behind the barn.

2024–10–14 [Omar Gharbi Omar Gharbi ]

This is the picture of an electronic coil of wire wound around a core of magnetic material.

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.

It also is a device that limits the change in current flow.

One

So combined with a device called a MOV or Metal-oxide-resistor, then forms the 3rd part of a “surge suppressor “.

Would individual surge supressors have save this equipment? most likely, since the surge supressor would take the jolt instead of the electronic components.

At least they know the answer if they wanted it.