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?

First Sentence:

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

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.

United Switches Off Starlink Internet on Regional Jets After Static Problem - WSJ

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

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

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

Enhanced Box Score: Phillies 4, Cubs 3 – June 9, 2025 - Bleacher Nation

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

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

Upvotes:

What are some tips for braiding a woman's hair on a date?

Edit 2024–10.

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

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

Measles vaccinations drop as CDC updates travel guidance - Yahoo

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

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

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

World fertility rates in 'unprecedented decline' - UN - BBC

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.

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

what exactly is a ‘surge’ protector?

Do Flat Earthers exist today? If so, where do they live?

Here is a simplified AC power diagram.

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

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

Here's a fresh look at Clockwork Revolution, coming "in due time" - Eurogamer

a photo is worth a thousand words.

But it can get overloaded, and no longer works.

What is lightning?

Measles Case: Visitors To Mahopac Restaurant May Have Been Exposed, Officials Warn - dailyvoice.com

In schematic diagrams this is the symbol for a fuse:

Barnstars:

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.

The Apartment Glut Is Ending and Demand Is Rising. Rents Are Headed Up, Too. - Barron's

There are three different concepts here that are getting confused.

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.

One

How will Israelis respond to someone claiming that anti-Zionism is not anti-Semitism, in the same way as anti-feminism not being misogyny and opposing same-sex marriage not being homophobia?

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

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

(Dc diagram shown, AC is similar).

How can couples reverse the buildup of resentment once they notice it?

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

2024–10–10[John johnson John Johnson ]

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

eight

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

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

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

He then describes the function of a fuse.

2024–10–16 [ OO OLAOYE OYEBODE ]

This device then solves the entire problem.

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

This one hit behind the barn.

He then asserts :

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

A circuit breaker is similar, but is resettable.

2024–10–11 [Victor Olarewsju Victor Olarewaju ]

At least they know the answer if they wanted it.

[old diagram got deleted by accident]

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

He then describes Rainy Season and Lightning.

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

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

[image of Common-mode choke]

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

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

so, what happens?

There are two important concepts here.

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

“ 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”

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

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

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

I post the exact comment here.

What does a fuse do?

This is 'the assistant's answer'

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.

The other is “what does a “fuse” do?”

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

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.

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

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

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

2024–10–14 [Omar Gharbi Omar Gharbi ]

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

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

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

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?

nine

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

2024–10–00 [ Ammar Mahdi ] Ammar Mahdi

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

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.