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?

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

There are three different concepts here that are getting confused.

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

What Happens to Your Blood Pressure When You Drink Energy Drinks Every Day? - Verywell Health

I post the exact comment here.

The other is “what does a “fuse” do?”

This one hit behind the barn.

One Molecule to Sleep and Wake: A New Brain Switch Discovered - Neuroscience News

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

a photo is worth a thousand words.

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

Matching 240 Million-Year-Old Dinosaur Footprints Found on Both Sides of the Atlantic - Indian Defence Review

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

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

eight

UNC Falls to Oklahoma, Setting Up Winner-Take-All Finale in Regional - 247Sports

What does a fuse do?

Upvotes:

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

All four iPhone 17 models just tipped for ‘metalens’ upgrade - Tom's Guide

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 ]

[image of Common-mode choke]

What can help me fall asleep at night?

[old diagram got deleted by accident]

“ 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”

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

Why did Amazon initially deny leave of absence to Alexis Scott-Windham, the Amazon worker who survived the New Orleans terrorist attack?

He then asserts :

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

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

‘The Studio’ and ‘Hacks’ Are Two of the Best Shows Ever About Hollywood — But Are They Too Inside or PTSD-Inducing? - Variety

He then describes Rainy Season and Lightning.

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

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

Little-known cells might be key to human brain’s massive memory - The Washington Post

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

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.

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

Mya Lesnar, daughter to WWE legend Brock Lesnar, wins national title in shot put - ESPN

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

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

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 was your most embarrassing wardrobe malfunction in public?

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

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

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.

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%).

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

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

nine

Here is a simplified AC power diagram.

2024–10–16 [ OO OLAOYE OYEBODE ]

At least they know the answer if they wanted it.

There are two important concepts here.

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

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

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

2024–10–11 [Victor Olarewsju Victor Olarewaju ]

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

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

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

so, what happens?

He then describes the function of a fuse.

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

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.

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

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?

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

This is 'the assistant's answer'

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

One

Edit 2024–10.

Barnstars:

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.

2024–10–00 [ Ammar Mahdi ] Ammar Mahdi

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

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

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

In schematic diagrams this is the symbol for a fuse:

But it can get overloaded, and no longer works.

(Dc diagram shown, AC is similar).

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.

A circuit breaker is similar, but is resettable.

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

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

What is lightning?

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

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

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

This device then solves the entire problem.

2024–10–14 [Omar Gharbi Omar Gharbi ]

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

First Sentence: