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?

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.

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

This is 'the assistant's answer'

'Cheers' star's cause of death released - KING5.com

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.

2024–10–14 [Omar Gharbi Omar Gharbi ]

And this is the problem alone. Is the power supply in the equipmemt designed with a lightning strike in mind? Some yes, others, no.

Utah health officials monitoring potential measles exposure in southwestern Utah - KSL.com

The other is “what does a “fuse” do?”

There are two important concepts here.

I post the exact comment here.

Nancy Wilson’s stolen custom-built Telecaster guitar was recovered by police in New Jersey - AP News

P = e* I, so since I is 16 amps, then the voltage dropped is 1/16 volt or 0.0650 volts.

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.

With Quantum Entanglement And Blockchain, We Can Finally Generate Real Random Numbers - IFLScience

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

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

A circuit breaker is similar, but is resettable.

US Food and Drug Administration Launches AI Platform to 'Modernize' Agency - Decrypt

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

An AC voltage/ current source, and an ac inductive load.

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

Summer rentals in the Hamptons are down 30% - CNBC

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

Barnstars:

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

Why does the USA continue to be the driver of the world economy?

At least they know the answer if they wanted it.

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

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

Why do men say women hit the wall at 24?

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

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

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

Inbox: This will be a tough roster to crack - Green Bay Packers

There are three different concepts here that are getting confused.

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

This one hit behind the barn.

Why should we share our wife with others?

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

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

what exactly is a ‘surge’ protector?

Ossett prostate cancer patient urges men to have checks - BBC

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

What does a fuse do?

nine

2024–10–10[John johnson John Johnson ]

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

a photo is worth a thousand words.

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?

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

Upvotes:

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.

First Sentence:

In schematic diagrams this is the symbol for a fuse:

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

He then asserts :

so, the loop of wire then, when put together with another loop reduces the ‘noise’ on a power line.

2024–10–00 [ Ammar Mahdi ] Ammar Mahdi

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

[image of Common-mode choke]

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

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

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 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”

so, what happens?

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

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

2024–10–11 [Victor Olarewsju Victor Olarewaju ]

This device then solves the entire problem.

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

One

He then describes Rainy Season and Lightning.

The third is lightning and “how it gets conducted into a home.”

It’s been three xxx five werks, and there has been no response to my follow on query on his Commment to my answer.

Here is a simplified AC power diagram.

2024–10–16 [ OO OLAOYE OYEBODE ]

eight

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?".

Edit 2024–10.

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

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.

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

[old diagram got deleted by accident]

He then describes the function of a fuse.

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

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

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.

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

(Dc diagram shown, AC is similar).

What is lightning?

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

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.