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: 18.06.2025 12:03

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).

This is 'the assistant's answer'

At least they know the answer if they wanted it.

I gave him everything. He said he loved me. Why?

In schematic diagrams this is the symbol for a fuse:

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.

How do you say "have fun" in French?

[old diagram got deleted by accident]

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

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

Where are the big girls? This is the first time I've seen a bigger lady boy and that's awesome .. you should post more of them here, nothing wrong with a thick black lady

Edit 2024–10.

2024–10–10[John johnson John Johnson ]

But it can get overloaded, and no longer works.

Why are white women so hard to date?

One

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

[image of Common-mode choke]

— fri(end)s forever!

He then describes the function of a fuse.

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.

I broke up with my boyfriend because he wasn’t transparent about his past, it hurts me and he doesn’t care. I told him in the beginning of our relationship that it was a deal breaker for me what do I do?

a photo is worth a thousand words.

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

Barnstars:

How do you feel about the impending end of what Donald Trump calls "the Green New scam"?

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

This device then solves the entire problem.

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

Why do Muslims invade Western society?

He then asserts :

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

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 it common for Americans to feel "trapped" due to the size and distance of their country from other countries/continents? Is this feeling an exaggeration or a reality?

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

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

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

Why do the majority of feminists hate men (not all feminists)?

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.

I post the exact comment here.

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

2024–10–14 [Omar Gharbi Omar Gharbi ]

what exactly is a ‘surge’ protector?

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

This one hit behind the barn.

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

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

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 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.

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

(Dc diagram shown, AC is similar).

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

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

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

First Sentence:

Here is a simplified AC power diagram.

so, what happens?

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

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

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

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.

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

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

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.

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

What does a fuse do?

2024–10–00 [ Ammar Mahdi ] Ammar Mahdi

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

The other is “what does a “fuse” do?”

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

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.

“ … 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.

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

2024–10–16 [ OO OLAOYE OYEBODE ]

nine

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

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

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

Upvotes:

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

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

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.

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

There are two important concepts here.

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

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

What is lightning?

2024–10–11 [Victor Olarewsju Victor Olarewaju ]

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