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: 19.06.2025 00:40

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?

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

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

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

Why do people think Justin Bieber is worse than Joseph Stalin?

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

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

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

Do women like watching men sucking men?

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

Edit 2024–10.

2024–10–10[John johnson John Johnson ]

What traits are considered unattractive? Which traits are typically seen as attractive and why?

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

He then asserts :

Here is a simplified AC power diagram.

What does it mean to dream about demons possessing people, and what can be done about this dream that keeps occurring for years?

what exactly is a ‘surge’ protector?

This is 'the assistant's answer'

I post the exact comment here.

Ridley Scott's New Sydney Sweeney Thriller Tops the Streaming Charts After Just 1 Day - Comic Book Resources

There are three different concepts here that are getting confused.

2024–10–00 [ Ammar Mahdi ] Ammar Mahdi

At least they know the answer if they wanted it.

What movies have not aged well?

He then describes Rainy Season and Lightning.

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

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

Are rich people harder workers than poor people as a whole?

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

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

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

What are the major security challenges facing India, both domestically and internationally, and how does the government address them?

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

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

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?

How do I beat domestic battery charges against my covert narcissist husband who is lying and playing the victim?

A circuit breaker is similar, but is resettable.

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

Upvotes:

Corey Conners withdraws from U.S. Open after injury striking camera cable - Awful Announcing

2024–10–14 [Omar Gharbi Omar Gharbi ]

[image of Common-mode choke]

This device then solves the entire problem.

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

What does a fuse do?

This one hit behind the barn.

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

nine

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.

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

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

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

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

One

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

so, what happens?

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

“ 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”

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

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

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.

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

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

What is lightning?

[old diagram got deleted by accident]

The other is “what does a “fuse” do?”

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

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

2024–10–11 [Victor Olarewsju Victor Olarewaju ]

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

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.

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

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

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

He then describes the function of a fuse.

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.

First Sentence:

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

But it can get overloaded, and no longer works.

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

In schematic diagrams this is the symbol for a fuse:

There are two important concepts here.

a photo is worth a thousand words.

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.

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

eight

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.

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.

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

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

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.

(Dc diagram shown, AC is similar).

Barnstars:

2024–10–16 [ OO OLAOYE OYEBODE ]