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: 02.07.2025 12:53

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?

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

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

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

What is the reason behind some people wearing trunks instead of speedos when swimming in pools?

First Sentence:

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

so, what happens?

Earth’s Energy Imbalance Is Growing at Terrifying Rates—Scientists Are Sounding the Alarm! - The Daily Galaxy

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.

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

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.

Summer rentals in the Hamptons are down 30% - CNBC

2024–10–14 [Omar Gharbi Omar Gharbi ]

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

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

Donald Trump says he will only pick Fed chair who cuts interest rates - Financial Times

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

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

2024–10–00 [ Ammar Mahdi ] Ammar Mahdi

The players who will dominate MLB trade deadline rumors — and how likely it is they’ll be moved - New York Post

What does a fuse do?

Barnstars:

“ 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”

I accidentally bought a protein powder that gains weight by mistake, can I still use it to lose weight if I only consume small portions? Or is it completely useless now?

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

what exactly is a ‘surge’ protector?

2024–10–11 [Victor Olarewsju Victor Olarewaju ]

Was Jimmy Carter a good President of the United States?

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

Edit 2024–10.

2024–10–16 [ OO OLAOYE OYEBODE ]

Why am I so triggered and depressed over a minor thing?

There are two important concepts here.

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

One

Why do people still think Michael Jackson was guilty?

I post the exact comment here.

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

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

She was a Disney star with platinum records, but Bridgit Mendler gave it up to change the world - Ars Technica

What is lightning?

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

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

Samsung sponsored runs hint at Galaxy Unpacked in New York City - SamMobile

He then describes Rainy Season and Lightning.

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.

Upvotes:

Summer McIntosh Swims 3:54.18 To Shatter 400 Freestyle World Record By 1.2 Seconds - SwimSwam

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

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

A circuit breaker is similar, but is resettable.

Do you realize people believe that story about Taylor Swift? Do you not say it is satire?

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.

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

a photo is worth a thousand words.

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

This is 'the assistant's answer'

He then asserts :

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

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

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

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

[image of Common-mode choke]

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.

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

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

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

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

In schematic diagrams this is the symbol for a fuse:

This one hit behind the barn.

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

[old diagram got deleted by accident]

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

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

At least they know the answer if they wanted it.

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

This device then solves the entire problem.

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

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

nine

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.

eight

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.

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?

The other is “what does a “fuse” do?”

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

But it can get overloaded, and no longer works.

He then describes the function of a fuse.

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

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

2024–10–10[John johnson John Johnson ]

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

Here is a simplified AC power diagram.

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

(Dc diagram shown, AC is similar).