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: 20.06.2025 19:24

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?

(Dc diagram shown, AC is similar).

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.

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.

What are the extra benefits of a smart TV?

2024–10–00 [ Ammar Mahdi ] Ammar Mahdi

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

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.

Is there scientific evidence for reincarnation? If so, how does it work and can it be proven through regression therapy?

This is 'the assistant's answer'

a photo is worth a thousand words.

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

Why did Cartman love Heidi purely with heart, her being the first one he ever did, but then one day Butters tells him that all women are manipulative and then he began to believe that she was a bad person and pretended to be a victim?

nine

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

[old diagram got deleted by accident]

What is your interpretation of the movie Rocky? What makes it a good film in your opinion?

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

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

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.

I've never read the book. What did Dorian Grey do that was so immoral and sinful?

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

There are two important concepts here.

“ 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”

We white women don't like white men. Do you have any issue with that?

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

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

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

Why is India lagging behind China in economic development when India is a democracy while China isn’t?

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

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

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

This Week In Space podcast: Episode 165 — Guardians of Space - Space

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.

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

Jenny from Perth writes – my partner is the life of the party, women and men adore him. But at home, he gets angry at us for the silliest reasons and never nice words me or our kids, always putting us down. Should I stay or leave him?

eight

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?

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

What can help me fall asleep at night?

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

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

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

One

He then asserts :

The other is “what does a “fuse” do?”

2024–10–11 [Victor Olarewsju Victor Olarewaju ]

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

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

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

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.

He then describes the function of a fuse.

This device then solves the entire problem.

I post the exact comment here.

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

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

There are three different concepts here that are getting confused.

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

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

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

Here is a simplified AC power diagram.

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

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.

But it can get overloaded, and no longer works.

2024–10–16 [ OO OLAOYE OYEBODE ]

This one hit behind the barn.

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

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

[image of Common-mode choke]

Upvotes:

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

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

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.

What is lightning?

so, what happens?

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

2024–10–14 [Omar Gharbi Omar Gharbi ]

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

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

Barnstars:

In schematic diagrams this is the symbol for a fuse:

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

First Sentence:

A circuit breaker is similar, but is resettable.

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 fuse is a non-resetable over current circuit protector.

Edit 2024–10.

what exactly is a ‘surge’ protector?

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

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

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

What does a fuse do?

2024–10–10[John johnson John Johnson ]

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