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?

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

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

This is 'the assistant's answer'

Direct Injection Engines: Why Carbon Buildup Happens (And How To Prevent It) - Jalopnik

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

nine

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

Resident Evil Requiem Playable in 1st and 3rd Person, New Screenshots - Push Square

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

2024–10–10[John johnson John Johnson ]

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

“NASA’s Ambitious Venture Unveiled”: A Groundbreaking $488 Million Mission With a New Telescope Set to Revolutionize Space Data - Rude Baguette

In schematic diagrams this is the symbol for a fuse:

A circuit breaker is similar, but is resettable.

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

16ft great white shark found with perfectly circular hole in head – and we know exactly what caused it - BBC Wildlife Magazine

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.

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

Which is the safest protein powder in India for use?

Barnstars:

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

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

Are female judges more lenient than male ones?

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

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

What does a fuse do?

Is forgetting things ‘normal’ aging or something worse? Here’s first step to finding out - San Francisco Chronicle

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.

Here is a simplified AC power diagram.

I post the exact comment here.

Australia's first-quarter economic growth misses estimates, expanding 1.3% from a year earlier - CNBC

He then describes Rainy Season and Lightning.

“ 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.

All of the new features coming to Apple’s iOS apps - TechCrunch

There are three different concepts here that are getting confused.

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

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

If Sharks Don't Have Lungs Then What Are Their Nostrils Doing? - IFLScience

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

He then describes the function of a fuse.

a photo is worth a thousand words.

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.

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

But it can get overloaded, and no longer works.

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

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.

He then asserts :

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

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

eight

Upvotes:

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

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

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

(Dc diagram shown, AC is similar).

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

[image of Common-mode choke]

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

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.

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

what exactly is a ‘surge’ protector?

so, what happens?

2024–10–11 [Victor Olarewsju Victor Olarewaju ]

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

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

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.

[old diagram got deleted by accident]

2024–10–00 [ Ammar Mahdi ] Ammar Mahdi

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

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.

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

At least they know the answer if they wanted it.

This one hit behind the barn.

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?

One

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 other is “what does a “fuse” do?”

2024–10–16 [ OO OLAOYE OYEBODE ]

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

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

There are two important concepts here.

Edit 2024–10.

What is lightning?

2024–10–14 [Omar Gharbi Omar Gharbi ]

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

First Sentence:

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

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

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

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

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.

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