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?

11.06.2025 03:33

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

(Dc diagram shown, AC is similar).

There are two important concepts here.

Asian Stocks Start Cautious, Dollar Holds Drop: Markets Wrap - Bloomberg

a photo is worth a thousand words.

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.

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

Everything You Need to Know About MicroSD Express - WIRED

“ 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”

What is lightning?

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

If there is an abandoned house with no owner, can I live in it?

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.

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.

What is the best way to get my wife to become a hotwife?

He then asserts :

2024–10–10[John johnson John Johnson ]

so, what happens?

Heads up! Midnight 16GB 13-inch M4 MacBook Air just dropped again to $800 all-time low ($199 off) - 9to5Toys

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

2024–10–16 [ OO OLAOYE OYEBODE ]

One

I’m 26 years old and a married woman. My husband hates my flat chest. What is the permanent solution?

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

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

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

Have you ever had sex with your mother-in-law? If so, how was it and did your wife ever find out?

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

what exactly is 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.

Enamel proteins from Paranthropus robustus teeth reveal biological sex and genetic variability - Phys.org

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

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

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.

Who is the greatest light welterweight boxer of all time?

This one hit behind the barn.

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

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

Is it better for 2nd generation Western Muslims to marry someone from their parents' country or a western Muslim who was born and raised in the West?

At least they know the answer if they wanted it.

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?

Upvotes:

China says its exports to the US fell 35% in May, as trade talks are due to start in London - AP News

Here is a simplified AC power diagram.

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

2024–10–14 [Omar Gharbi Omar Gharbi ]

Are today’s baseball pitchers faster than a few years ago, or is it that radar guns have improved and get the pitch speed as it is released rather than as it reaches the plate?

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

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

Barnstars:

Wall Street floods into Bitcoin Futures as CME trader count hits all-time high - AMBCrypto

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

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

nine

Vienna calling: Strauss's 'Blue Danube' waltzes into outer space - Phys.org

[image of Common-mode choke]

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

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

Why is Tiananmen Square censored?

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

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

A circuit breaker is similar, but is resettable.

The other is “what does a “fuse” do?”

eight

This is 'the assistant's answer'

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

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

This device then solves the entire problem.

There are three different concepts here that are getting confused.

“ 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.

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

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

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

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.

But it can get overloaded, and no longer works.

Edit 2024–10.

What does a fuse do?

First Sentence:

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.

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

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

He then describes Rainy Season and Lightning.

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

2024–10–00 [ Ammar Mahdi ] Ammar Mahdi

2024–10–11 [Victor Olarewsju Victor Olarewaju ]

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

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.

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

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

[old diagram got deleted by accident]

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

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

In schematic diagrams this is the symbol for a fuse:

He then describes the function of a fuse.

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

I post the exact comment here.

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

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