Logo

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?

Last Updated: 26.06.2025 20:49

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?

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

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

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

Pokemon Scarlet And Violet's Free Switch 2 Update Is Now Live - GameSpot

2024–10–00 [ Ammar Mahdi ] Ammar Mahdi

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

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

This ‘smoke’ ring was formed by one of the biggest creatures on Earth. Scientists say it has never been documented before - BBC Wildlife Magazine

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

2024–10–11 [Victor Olarewsju Victor Olarewaju ]

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

Apple brings Apple Intelligence to the iPhone screen at WWDC 2025 - TechCrunch

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

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

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

Two-versus-two tag-team fighting game Saturday AM: Battle Manga announced - Gematsu

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

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

nine

If you are a programmer using an AI LLM to help you code, are you finding it speeding you up or slowing you down? What impact has it had on your programming?

[image of Common-mode choke]

“ 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”

He then asserts :

Bryce Huff thankful he landed with 49ers - NBC Sports

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

But it can get overloaded, and no longer works.

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.

Why do people have trouble accepting the very true fact that "The Blue Marble" photo of Earth is a composite and therefore (just like every other subsequent "picture" of Earth NASA has ever shown us) not a real photo but computer generated?

At least they know the answer if they wanted it.

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

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

Why are people so rude to debt collector’s? I am one and I am so tired of being mistreated. We are under paid and then have to deal with the most ungrateful, and disrespectful people. We aren’t customer service. Don’t get mad at us because YOU owe.

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

This one hit behind the barn.

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

Crunch time—we’ll soon find out if Amazon’s launch providers are up to the job - Ars Technica

First Sentence:

What does a fuse do?

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

What are your controversial and hot takes on Naruto?

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

He then describes Rainy Season and Lightning.

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.

Simulation reveals emergence of jet from binary neutron star merger followed by black hole formation - Phys.org

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

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

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

Why do people stop working towards achieving their dreams?

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

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.

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 Witcher 4 is built for console first, CDPR confirms 60FPS is not guaranteed - TweakTown

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

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

Edit 2024–10.

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

(Dc diagram shown, AC is similar).

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

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

[old diagram got deleted by accident]

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

what exactly is a ‘surge’ protector?

The other is “what does a “fuse” do?”

2024–10–10[John johnson John Johnson ]

There are three different concepts here that are getting confused.

In schematic diagrams this is the symbol for a fuse:

so, what happens?

eight

What is lightning?

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.

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.

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

Upvotes:

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

2024–10–14 [Omar Gharbi Omar Gharbi ]

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

2024–10–16 [ OO OLAOYE OYEBODE ]

Barnstars:

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

He then describes the function of a fuse.

a photo is worth a thousand words.

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

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

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

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

This is 'the assistant's answer'

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

Here is a simplified AC power diagram.

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

I post the exact comment here.

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

A circuit breaker is similar, but is resettable.

This device then solves the entire problem.

There are two important concepts here.

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

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?

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