Author name: G K Agrawal (Retd. Sr. DGM BHEL)

G K Agrawal is a retired Sr. DGM from BHEL, with B.Sc. and B.Tech (HBTU Kanpur). He has extensive experience in electrical and electronics R&D and product development. He has created 400+ technical video tutorials on YouTube and shares practical industry knowledge to bridge the gap between theory and real-world engineering.

Why 30 mA RCCB at home: Tripping time vs Current and Examples

why 30 mA RCCB breaker sued at home

In this post I will explain, that why 30mA type RCCB breaker is used in the home and tripping time of the 30 mA RCCB. And if 30mA is not possible. Then how to use 300mA type RCCB breaker.

I will explain. where to use higher rating type RCCB breaker. Protection concept and as usual, I will share some extra knowledge as per my experience.

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MOV, Metal Oxide Varistor concept, with Connection Diagram

MOV varistor

Metal oxide varistor (MOV) finds use in many electrical and electronic equipment. I will explain in detail, that what is metal oxide varistor and how to use it.

I also will explain, from where the voltage spike comes in the electrical cccircuits with the help of various circuit diagrams.

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AFCI or AFDD Breaker Concept: Working Principle and Current Signature

AFDD or AFCI breaker

I discuss, an arc fault detection device (AFDD) or arc fault circuit interrupter (AFCI). You also learn some functions in AFCI AFDD breaker like flame formation, electric current signature sensor, algorithm concept of measurement, a block diagram of AFDD, causes of arc fault, and types of arc faults.

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AC or DC, which is More Dangerous to the human body

the danger of AC and DC

I will explain, AC or DC, which is more dangerous in this post. There are many factors that decide the intensity of electric shock on the human body. These other factors also play a very important role in addition to DC or dangerous AC frequency.

I will explain all these like AC or DC, which is more dangerous frequency to the human body in this post. Further, I also will discuss in detail the other factors affecting the intensity of electrical shock to the human body.

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