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?

08.06.2025 09:49

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?

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

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.

Evan Engram embraces the “Joker” role in the Broncos’ offense - NBC Sports

(Dc diagram shown, AC is similar).

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

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

Astronomers Have Detected a Galaxy Millions of Years Older Than Any Previously Observed - WIRED

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.

At least they know the answer if they wanted it.

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

In space, no one can hear you scream — But it still gets incredibly noisy - Salon.com

eight

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

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.

Why cant I motivate myself to go to school (grade 10)?

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

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?

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.

Can Djokovic climb the mountain? - Roland Garros

In schematic diagrams this is the symbol for a fuse:

This one hit behind the barn.

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

Where should Jac Caglianone hit in the Royals order? - Royals Review

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

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

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

Do very hot men ever feel attracted to an ugly woman? Why?

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

This is 'the assistant's answer'

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

Why are there no fossils for the 'missing link' that connects our ancestors with other species? Is this a misconception or is there another explanation?

He then describes the function of a fuse.

Upvotes:

what exactly is a ‘surge’ protector?

Why would calling me an incel help anything? How does that solve anything? Why can’t you actually be helpful and offer productive honest advice?

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.

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

Could Patriots cut Stefon Diggs and owe him nothing? It’s complicated. - NBC Sports

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

2024–10–00 [ Ammar Mahdi ] Ammar Mahdi

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.

Are rich people harder workers than poor people as a whole?

[image of Common-mode choke]

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

A circuit breaker is similar, but is resettable.

What is the difference between Michael Corleone’s marriage to Apollonia Vitelli and Kay Adams?

He then asserts :

2024–10–10[John johnson John Johnson ]

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

[old diagram got deleted by accident]

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

There are two important concepts here.

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

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

2024–10–16 [ OO OLAOYE OYEBODE ]

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

The other is “what does a “fuse” do?”

There are three different concepts here that are getting confused.

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

He then describes Rainy Season and Lightning.

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

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

I post the exact comment here.

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

What is lightning?

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

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

But it can get overloaded, and no longer works.

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

One

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

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

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

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

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

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

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.

a photo is worth a thousand words.

Edit 2024–10.

nine

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.

Here is a simplified AC power diagram.

2024–10–14 [Omar Gharbi Omar Gharbi ]

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

Barnstars:

First Sentence:

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

so, what happens?

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

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

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

“ 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”

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.

This device then solves the entire problem.

What does a fuse do?