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Gary Scrim wrote a new post, My personal take on an ACB (Air Circuit Breaker): 5 years, 8 months ago
This is no explanation about ACBs…just a personal glance of the user experience.
Operator interface:
I prefer non “menu-driven digital display” (unless it is one that shows you everything without […]
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Gary Scrim wrote a new post, My wish list for circuit breakers 5 years, 8 months ago
Can’t I dream a little bit too…
And no, nothing to do with internet of things and comms and displays…no, no, no.
That’s not it!
Just plain and simple practical features…
* Would be nice […]
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Gary Scrim wrote a new post, Is the Clockner-Moeller and Cuttler-Hammer brands dead? 5 years, 8 months ago
When I qualified as an electrician there were Clockner Moeller and Cuttler Hammer giants we built a high affinity for because of their reliability and serviceability…What happened?
Eaton: Does it still […]
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Gary Scrim wrote a new post, This is how a (circuit breaker) datasheet is supposed to be… 5 years, 8 months ago
Originally I started this “technical corner” because I believed information was either too complicated, too disparaged, but most of all too dispersed (all over the place- UL there, IEC there etc) in relation to […]
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Gary Scrim wrote a new post, My take on protected information from companies. 5 years, 8 months ago
Product technical / data sheets: Is that all it provides, data?
I could look at a datasheet only and tell you books about the product and the spirit of the company and its management.In this brave new world of […]
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Gary Scrim wrote a new post, My goodness…look at this circuitbreaker…what a beauty! 5 years, 8 months ago
Checkout this circuit breaker on the left…I have not seen these breakers with an eye…
I got onto this manufacturer based on their splendid datasheet.
But look at that beautiful breaker on […]
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Gary Scrim wrote a new post, Open-circuit voltage does not exist…really? 5 years, 8 months ago
We know what it is, and its condition, but by itself, it does not exist.
I cannot believe the concept of OPEN CIRCUIT VOLTAGE is confusing, but it seems it is…at least for some.
Some come to this […]
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Gary Scrim wrote a new post, Faradays experiment: The discovery that put our civilization on its way…creating electricity. 5 years, 8 months ago
In 1820 Mr. Michael Faraday proved we can “make” electricity from magnetic fields using this experiment.
This is the electrician’s version of Faraday’s experiment.
—===—
And what doe […]
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Gary Scrim wrote a new post, The Ampere experiment from 1820 how it’s done today! 5 years, 8 months ago
Quiz: Does a cable carrying DC current create a magnetic field around it, or not?
This experiment proved all current-carrying cables exude a magnetic field paving the way for electrical generation […]
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Gary Scrim wrote a new post, Electric shock / Electrocution- when do we die? 5 years, 8 months ago
As if we don’t know it already, lets quickly recount electricity and the biological body. Since the body consists of 70 percent water it is only natural it will conduct electricity. Each of us has a different […]
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Gary Scrim wrote a new post, What exactly is this utilization categories for circuit breakers? 5 years, 8 months ago
Circuit breakers are designed according to he purpose it must serve ..in this case protecting a circuit – with the smallest size wires – whilst still having to contend with all kinds and of types of loads, thus it […]
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Gary Scrim wrote a new post, Selecting a circuit breaker from a sales point of view. 5 years, 8 months ago
Note: Since I am not the curator of the Electrical fraternity but just another peanut wanting to bring a message of safety across, let’s share some more info so better informed choices will be made.
First and […]
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Gary Scrim wrote a new post, What is this 17.5mm with DIN rail mounted circuit breakers? 5 years, 8 months ago
By some unwritten rule – or maybe the first successful manufacturer designed it with this width and voila it became the default with for the smallest single miniature circuit breaker.
And so it also came to […]
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Gary Scrim wrote a new post, Why on earth is there two voltages on a single pole circuit breaker? 5 years, 8 months ago
What is the real voltage rating when it says 240/400V on circuit breakers?
A better question to ask is why not just put 400Vac?
The technical problem is: Ratings change at different voltages so this can’t […]
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Gary Scrim wrote a new post, How do I determine the Prospective Short Circuit Current for a site? 5 years, 8 months ago
Surprisingly there are multiple ways to determine the Prospective Short Circuit Current Value.
It is also important to note that the value closest to the transformer is the highest and decreases according to […]
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Gary Scrim wrote a new post, Prospective Short Circuit Current…how complicated is it? 5 years, 8 months ago
Lets first kill what it is: Imagine you switch the kettle on at home. The element that heats up the water will pull a certain amount of “controlled” current.
Look at the back and you will see the wattage rating […]
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Gary Scrim wrote a new post, In the circuit breaker tripping graphs what exactly does the “hot” and “cold” trip lines mean? 5 years, 8 months ago
I always thought it meant before a trip it is seen as cold and after a trip it is seen as hot.
*Now I know in ACB jargon this implies “symmetry”
Well In the ABB electrical installation handbook 6th […]
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Gary Scrim wrote a new post, Circuit breaker tripping point deviation due to grouping 5 years, 8 months ago
Circuit breakers mounted in a row, without any spacing between them, brings about the grouping derating factor,
Much is to be considered, like how much current and how much “percentage load” flows through each […]
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Gary Scrim wrote a new post, Circuit breaker tripping deviation from manufactures(Temperature) 5 years, 8 months ago
Depending on the technology used temperature does affect the tripping point of a circuit breaker.
What does this mean in real terms?
If you are the type of designer that runs components to the max then it is […]
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Gary Scrim wrote a new post, Circuit breaker tripping point deviation due to frequency 5 years, 8 months ago
I never thought anyone might want to use poor circuit breaker in this type of environment.
I mean 50/60Hertz is what she’s designed for.
But, we learn everyday…
What if you did want to use it under a […]
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