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?

What does a fuse do?

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

In schematic diagrams this is the symbol for a fuse:

Trump Crypto Wallet Goes Dark Following Cease and Desist - Decrypt

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

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

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 song are you listening to right now? What does it mean to you?

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

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.

There are two important concepts here.

Stolen iPhones disabled by Apple's anti-theft tech after Los Angeles looting - TechSpot

Edit 2024–10.

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

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

Intel Is A Buy (Technical Analysis) (NASDAQ:INTC) - Seeking Alpha

I post the exact comment here.

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

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

Buffalo Trace Adds Eagle Rare 12 To Its Permanent Lineup Of Age-Stated Bourbons - Forbes

This one hit behind the barn.

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

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

Trump Media Raises $2.32B—Bitcoin Treasury and Big Moves Ahead - Bitcoin.com News

[old diagram got deleted by accident]

Here is a simplified AC power diagram.

He then describes Rainy Season and Lightning.

Something Deep in Our Galaxy Is Pulsing Every 44 Minutes. No One Knows Why. - AOL.com

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

He then asserts :

A circuit breaker is similar, but is resettable.

New paper pushes back on Apple’s LLM ‘reasoning collapse’ study - 9to5Mac

Upvotes:

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

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

What do men like to be given for their birthday?

what exactly is a ‘surge’ protector?

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

nine

New Research Reveals the Brain Learns Differently Than We Thought - SciTechDaily

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

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

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

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

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

At least they know the answer if they wanted it.

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

There are three different concepts here that are getting confused.

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

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

[image of Common-mode choke]

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

eight

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

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

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.

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.

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.

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?

He then describes the function of a fuse.

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

This is 'the assistant's answer'

Barnstars:

2024–10–14 [Omar Gharbi Omar Gharbi ]

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

2024–10–10[John johnson John Johnson ]

The other is “what does a “fuse” do?”

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

First Sentence:

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

so, what happens?

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

(Dc diagram shown, AC is similar).

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

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.

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

This device then solves the entire problem.

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

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

One

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

2024–10–11 [Victor Olarewsju Victor Olarewaju ]

2024–10–16 [ OO OLAOYE OYEBODE ]

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

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.

What is lightning?

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

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

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

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.

a photo is worth a thousand words.

But it can get overloaded, and no longer works.

2024–10–00 [ Ammar Mahdi ] Ammar Mahdi

“ 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”