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?

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

2024–10–14 [Omar Gharbi Omar Gharbi ]

This one hit behind the barn.

How do you stop your balls from sweating?

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

He then asserts :

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

George E. Smith, Nobel laureate who envisioned digital imagery, dies at 95 - The Washington Post

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

nine

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

Democrat announces run against Ernst after her 'We're all going to die' comments - ABC News

This device then solves the entire problem.

A circuit breaker is similar, but is resettable.

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

Gun owners, imagine if an attacker comes to your home and takes your gun to use against you before you had the chance to pick it up. Would you regret owning a gun?

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

I post the exact comment here.

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

What caused the Democratic Party's 2024 presidential campaign to implode so horrifically?

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

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

what exactly is a ‘surge’ protector?

How does growing up in chaos affect a child as they become an adult?

Here is a simplified AC power diagram.

[old diagram got deleted by accident]

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

Jessie J Diagnosed with ‘Early’ Breast Cancer: ‘I Need to Process It and Talk About It’ - Rolling Stone

[image of Common-mode choke]

In schematic diagrams this is the symbol for a fuse:

“ 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”

Cardinals Place Jordan Walker On 10-Day IL, Select Ryan Vilade - MLB Trade Rumors

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

2024–10–11 [Victor Olarewsju Victor Olarewaju ]

Barnstars:

What is the most peculiar thing about the human brain?

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

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

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

What’s up in the sky for June 2025? Arietid meteor shower, strawberry moon and much more - WTOP

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

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

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

UNC Falls to Oklahoma, Setting Up Winner-Take-All Finale in Regional - 247Sports

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

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

There are two important concepts here.

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

First Sentence:

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

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

What is lightning?

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

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

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.

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

He then describes Rainy Season and Lightning.

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

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

eight

He then describes the function of a fuse.

There are three different concepts here that are getting confused.

Upvotes:

2024–10–16 [ OO OLAOYE OYEBODE ]

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

But it can get overloaded, and no longer works.

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.

At least they know the answer if they wanted it.

2024–10–00 [ Ammar Mahdi ] Ammar Mahdi

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

Edit 2024–10.

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

(Dc diagram shown, AC is similar).

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

so, what happens?

2024–10–10[John johnson John Johnson ]

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.

a photo is worth a thousand words.

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.

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

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

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

What does a fuse do?

This is 'the assistant's answer'

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

One

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.

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.

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

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.

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 other is “what does a “fuse” do?”