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: 22.06.2025 09:29
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.
what exactly is a ‘surge’ protector?
“ … to protect building, lightning arrestor, is provided above building and directly connected to earth.”
Steelers Address Mason Rudolph Trump Rally Appearance In Email To Fans - TMZ
(There is no concept of polarity, in the loop because the current changes direction 100 to 120 times a second (power frequency).
These are simplified answers to the original question, and does not change anything I wrote above.
But it can get overloaded, and no longer works.
Upvotes:
This is where this question deviates from being a 'generic' question, and becomes more specific.
At one ohm, the resistor has a maximum of 1 watt power.
Weekend Box Office: LILO & STITCH KO’s KARATE KID LEGENDS - boxofficepro.com
“ 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.
One is “what exactly is in a ‘surge protector’ ? ”
Angels Acquire LaMonte Wade Jr. - MLB Trade Rumors
At least they know the answer if they wanted it.
Because the load is inductive, the current lags the voltage.(by a bit).
But… the neutral is now “floating” because of the 1 ohm resistance.
Simone Biles calls Riley Gaines 'sick' over criticism of transgender athletes - NBC News
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%).
If the nominal power is 4,000 watts then the current at 230volts is 16 amps.
Fallout 76: Gone Fission Release Notes - Bethesda.net
He then describes Rainy Season and Lightning.
So, it’s possible that these devices from Trip Lite have addition suppression devices, these ones seem to be sturdy.
Would individual surge supressors have save this equipment? most likely, since the surge supressor would take the jolt instead of the electronic components.
Watch These Broadcom Stock Price Levels After Post-Earnings Slide - Investopedia
In schematic diagrams this is the symbol for a fuse:
It also is a device that limits the change in current flow.
(Dc diagram shown, AC is similar).
Which is the first MV you watched in Stray Kids?
Now when you have a certain ac resistance, then a current flows in a loop.
The MOV will conduct when the voltage exceeds 50% of line voltage.
This one hit behind the barn.
Do you know a good lawyer joke?
This is where the MOV conducts again, and dissipated the energy.
A circuit breaker is similar, but is resettable.
[old diagram got deleted by accident]
Is anyone else losing complete respect for the US at this point?
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.
The other is “what does a “fuse” do?”
Why does it itch on my vulva, uterus, and sides of my vagina, but it doesn't itch inside the vagina?
2024–10–16 [ OO OLAOYE OYEBODE ]
When the current is 200% of the rated value , it will “go open” (the link metal melts) and protect the device.
Can the fuse protect the electronic devices from lightning instead of a surge protector.
There are three different concepts here that are getting confused.
OK, this is Mohan Rajaratnam’s definition of a Surge suppressor.
One
What is lightning?
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.
2024–10–11 [Bobby Sanchez Bobby Sanchez ].
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?
It’s been three xxx five werks, and there has been no response to my follow on query on his Commment to my answer.
Barnstars:
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 ]
I post the exact comment here.
Is the question then , "why buy a surge supressor, if the fuse alone protects the electronic circuits from a lightning bolt?".
There are two important concepts here.
This is 'the assistant's answer'
This device then solves the entire problem.
And this is the problem alone. Is the power supply in the equipmemt designed with a lightning strike in mind? Some yes, others, no.
Fuses, on their own, then operate much slower than the MOV variable resistance, during the lightning strike.
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.
The third is lightning and “how it gets conducted into a home.”
What does a fuse do?
so, the loop of wire then, when put together with another loop reduces the ‘noise’ on a power line.
An AC voltage/ current source, and an ac inductive load.
It seems Mohan does not understand the difference between a comment and an Answer.
[image of Common-mode choke]
“ 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”
2024–10–10[John johnson John Johnson ]
the problem then depends on "how fast does the fuse operate?".
Here is a simplified AC power diagram.
eight
This is the picture of an electronic coil of wire wound around a core of magnetic material.
The bolt then partially travels down the line to your home.
a photo is worth a thousand words.
but I think this circuit , shows a few more pieces.
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.
2024–10–11 [Victor Olarewsju Victor Olarewaju ]
So, the voltage could go up to 500 volts, and the fuse will not open up.
but this device (an Inductor) … impedes the rapid changes in the current.
2024–10–00 [ Ammar Mahdi ] Ammar Mahdi
P = e* I, so since I is 16 amps, then the voltage dropped is 1/16 volt or 0.0650 volts.
nine
so, what happens?
He then asserts :
Mohan forgets that a fuse is a one-time device, and needs to be replaced if it is tripped.
First Sentence:
These devices are installed between the “hot” and “neutral” and protective ground.
For this case there are devices called Metal oxide varistors (MOV).
Edit 2024–10.
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.