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: 27.06.2025 08:06

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?

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

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

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

Fermenting legume pulses increases antioxidant and antidiabetic properties, study finds - Phys.org

At least they know the answer if they wanted it.

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

But it can get overloaded, and no longer works.

Early Humans Did More Than Just Walk—They Mastered a Surprising Skill Set - Indian Defence Review

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

[old diagram got deleted by accident]

2024–10–11 [Victor Olarewsju Victor Olarewaju ]

37 Hidden Gems On Amazon That’ll Make You Think “Where Have You Been All My Life?” - BuzzFeed

A circuit breaker is similar, but is resettable.

In schematic diagrams this is the symbol for a fuse:

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

Brain Adapts to Neuron Loss Through Rapid Rewiring - Neuroscience News

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

He then describes Rainy Season and Lightning.

The other is “what does a “fuse” do?”

Is it true that people who are possessed by demons cannot see them until the demon is cast out? What is the reason for this?

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

what exactly is a ‘surge’ protector?

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

Galaxy Watch 8 series leak shows Samsung’s upcoming wearables from every angle - 9to5Google

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

What does a fuse do?

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

Texas ends in-state tuition for undocumented students after Abbott, AG agree to DOJ demand - Dallas News

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

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

He then describes the function of a fuse.

Is visiting holy shrines (dargahs) or graves haraam in Islam?

Edit 2024–10.

eight

This one hit behind the barn.

What are the downsides of OpenAI's chain-of-thought approach in the o1 model?

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

I post the exact comment here.

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

What is the impact of being stereotyped as poor on an individual's life? How does it make them feel?

[image of Common-mode choke]

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

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

The Highest Prices You Can Get For Pokémon TCG's Destined Rivals - Kotaku

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

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

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

Angel Reese Posts 1st Career Triple-Double as Sky Beat Sun in WNBA Commissioner's Cup - Bleacher Report

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

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

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

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.

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

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

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

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

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

Upvotes:

Barnstars:

First Sentence:

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

so, what happens?

a photo is worth a thousand words.

This device then solves the entire problem.

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

There are three different concepts here that are getting confused.

There are two important concepts here.

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.

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

2024–10–14 [Omar Gharbi Omar Gharbi ]

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

(Dc diagram shown, AC is similar).

He then asserts :

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

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?

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.

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

nine

Here is a simplified AC power diagram.

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.

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.

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.”

2024–10–16 [ OO OLAOYE OYEBODE ]

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

2024–10–10[John johnson John Johnson ]

One

What is lightning?

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

“ 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”

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

2024–10–00 [ Ammar Mahdi ] Ammar Mahdi

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.

This is 'the assistant's answer'

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