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?

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

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.

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

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

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.

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The other is “what does a “fuse” do?”

what exactly is a ‘surge’ protector?

This one hit behind the barn.

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First Sentence:

He then describes the function of a fuse.

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

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

What does a fuse do?

He then asserts :

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

Here is a simplified AC power diagram.

2024–10–00 [ Ammar Mahdi ] Ammar Mahdi

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

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.

In schematic diagrams this is the symbol for a fuse:

What happens if someone fills up their car at the pump but leaves without paying? How is this situation typically handled?

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

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

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

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

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?

Is it possible that my TF caused a kundalini awakening in another person? He is famous because He is a singer. We have not met physically yet, but I have gone through kundalini awakening and DNOTS and their ongoing. I have also had soul recognition so I know for sure that He is my Divine Counterpart and I do not have any doubts about it. But it is indeed perplexing that somebody had an awakening at the physical level because of Him. Is it a test for me? I have a mixture of feelings. On one hand I marvelled at Him and empathised with the person and on the other, I doubt if this just a test for me. I would appreciate your pov. Thank you for much.

There are three different concepts here that are getting confused.

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

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Upvotes:

At least they know the answer if they wanted it.

nine

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2024–10–14 [Omar Gharbi Omar Gharbi ]

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

[old diagram got deleted by accident]

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

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.

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

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.

2024–10–10[John johnson John Johnson ]

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

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

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

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

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

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.

Barnstars:

2024–10–16 [ OO OLAOYE OYEBODE ]

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

A circuit breaker is similar, but is resettable.

One

This is 'the assistant's answer'

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

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.

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.

(Dc diagram shown, AC is similar).

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

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

2024–10–11 [Victor Olarewsju Victor Olarewaju ]

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

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

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

This device then solves the entire problem.

He then describes Rainy Season and Lightning.

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

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

a photo is worth a thousand words.

What is lightning?

But it can get overloaded, and no longer works.

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

I post the exact comment here.

“ 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?

There are two important concepts here.

[image of Common-mode choke]

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

Edit 2024–10.

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

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

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

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

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

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

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