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 01:17

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?

This one hit behind the barn.

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

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

Were there any friendly fire incidents involving American submarines, aircraft carriers, or battleships during World War II or World War I?

The other is “what does a “fuse” do?”

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.

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

Why do men like low maintenance women?

2024–10–14 [Omar Gharbi Omar Gharbi ]

eight

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

What are some ballbusting stories?

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.

2024–10–16 [ OO OLAOYE OYEBODE ]

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

Gun owners, imagine if an attacker comes to your home and takes your gun to use against you before you had the chance to pick it up. Would you regret owning a gun?

He then describes Rainy Season and Lightning.

2024–10–11 [Victor Olarewsju Victor Olarewaju ]

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

Can you share some of your favorite jokes that are not well-known but always make people laugh?

He then describes the function of a fuse.

A circuit breaker is similar, but is resettable.

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

Why do my friends always say "yeah, we've heard this before" when I talk about something I'm passionate about?

I post the exact comment here.

so, what happens?

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

How can you tell if someone is cunning?

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

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.

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.

J.K. Rowling said that 65% of people in Britain are transgender. Where did she come up with that statistic?

(Dc diagram shown, AC is similar).

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

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

Were the 1980s as uptight and prudish as movies and TV shows make them out to be? When I think of 80s culture, I think about a very "icky" judgmental yuppie status quo time period.

Barnstars:

Here is a simplified AC power diagram.

nine

Cyberpunk 2077 ‘incredible’ new release has fans floored - GAMINGbible

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

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

Upvotes:

SEC clears Trump Media filing, opening door to multi-billion-dollar Bitcoin buy - The Block

“ 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”

2024–10–00 [ Ammar Mahdi ] Ammar Mahdi

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

If you caught a shoplifter at your yard sale, how would you handle it?

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

In schematic diagrams this is the symbol for a fuse:

There are two important concepts here.

At least they know the answer if they wanted it.

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

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

[image of Common-mode choke]

Edit 2024–10.

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

First Sentence:

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

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

But it can get overloaded, and no longer works.

He then asserts :

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

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

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

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

This device then solves the entire problem.

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

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

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

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

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

a photo is worth a thousand words.

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.

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

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

[old diagram got deleted by accident]

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.

2024–10–10[John johnson John Johnson ]

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?

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

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

What is lightning?

What does a fuse do?

There are three different concepts here that are getting confused.

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

This is 'the assistant's answer'

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

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.

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

One

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

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

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

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

what exactly is a ‘surge’ protector?

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