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: 23.06.2025 01:02
This is where the MOV conducts again, and dissipated the energy.
Mohan forgets that a fuse is a one-time device, and needs to be replaced if it is tripped.
Fuses, on their own, then operate much slower than the MOV variable resistance, during the lightning strike.
US measles total nears 1,100 cases as Colorado reports airline cluster - CIDRAP
(There is no concept of polarity, in the loop because the current changes direction 100 to 120 times a second (power frequency).
[image of Common-mode choke]
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.
Why do you think there is growing support for far-right parties in Europe?
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.
But during the surge, the fuse will not blow if it is a longer duration and lower value )10 to 50%).
Is the question then , "why buy a surge supressor, if the fuse alone protects the electronic circuits from a lightning bolt?".
This is the picture of an electronic coil of wire wound around a core of magnetic material.
But it can get overloaded, and no longer works.
One
Inside J.J. Spaun's Arizona Home as He Claims Surprising U.S. Open Win - Realtor.com
There are two important concepts here.
At least they know the answer if they wanted it.
So, the voltage could go up to 500 volts, and the fuse will not open up.
How do flat earthers explain the Earth being stationary? Is this concept considered impossible?
This one hit behind the barn.
Edit 2024–10.
A fuse is a non-resetable over current circuit protector.
What movies have not aged well?
“ A fuse is a device which protects the (circuit) against overload and short circuit.”
2024–10–11 [Victor Olarewsju Victor Olarewaju ]
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.
When the current is 200% of the rated value , it will “go open” (the link metal melts) and protect the device.
He then asserts :
2024–10–16 [ OO OLAOYE OYEBODE ]
Wall Street floods into Bitcoin Futures as CME trader count hits all-time high - AMBCrypto
What is lightning?
what exactly is a ‘surge’ protector?
2024–10–11 [Bobby Sanchez Bobby Sanchez ].
Is it ethical for same-sex couples to raise children?
First Sentence:
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.
2024–09–27 [ 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?
The MOV will conduct when the voltage exceeds 50% of line voltage.
so, what happens?
Upvotes:
Senators get ready to roll out a new crypto bill - Politico
It also is a device that limits the change in current flow.
If the nominal power is 4,000 watts then the current at 230volts is 16 amps.
What does a fuse do?
Wall Street sets Palantir stock price for next 12 months - Finbold
I post the exact comment here.
[old diagram got deleted by accident]
Because the load is inductive, the current lags the voltage.(by a bit).
This device then solves the entire problem.
So combined with a device called a MOV or Metal-oxide-resistor, then forms the 3rd part of a “surge suppressor “.
OK, this is Mohan Rajaratnam’s definition of a Surge suppressor.
so, the loop of wire then, when put together with another loop reduces the ‘noise’ on a power line.
These are simplified answers to the original question, and does not change anything I wrote above.
This is 'the assistant's answer'
But… the neutral is now “floating” because of the 1 ohm resistance.
So, it’s possible that these devices from Trip Lite have addition suppression devices, these ones seem to be sturdy.
For this case there are devices called Metal oxide varistors (MOV).
There are three different concepts here that are getting confused.
A circuit breaker is similar, but is resettable.
Would individual surge supressors have save this equipment? most likely, since the surge supressor would take the jolt instead of the electronic components.
P = e* I, so since I is 16 amps, then the voltage dropped is 1/16 volt or 0.0650 volts.
2024–10–14 [Omar Gharbi Omar Gharbi ]
the problem then depends on "how fast does the fuse operate?".
Here is a simplified AC power diagram.
but I think this circuit , shows a few more pieces.
It seems Mohan does not understand the difference between a comment and an Answer.
One is “what exactly is in a ‘surge 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.
“ 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”
He then describes Rainy Season and Lightning.
Now when you have a certain ac resistance, then a current flows in a loop.
An AC voltage/ current source, and an ac inductive load.
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.
eight
At one ohm, the resistor has a maximum of 1 watt power.
(Dc diagram shown, AC is similar).
2024–10–10[John johnson John Johnson ]
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 bolt then partially travels down the line to your home.
This is where this question deviates from being a 'generic' question, and becomes more specific.
In schematic diagrams this is the symbol for a fuse:
nine
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.
The other is “what does a “fuse” do?”
The third is lightning and “how it gets conducted into a home.”
Can the fuse protect the electronic devices from lightning instead of a surge protector.
Barnstars:
“ … to protect building, lightning arrestor, is provided above building and directly connected to earth.”
but this device (an Inductor) … impedes the rapid changes in the current.
And this is the problem alone. Is the power supply in the equipmemt designed with a lightning strike in mind? Some yes, others, no.
2024–10–00 [ Ammar Mahdi ] Ammar Mahdi
He then describes the function of a fuse.
These devices are installed between the “hot” and “neutral” and protective ground.