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Must-know basics of Home electrical components for an Indian home buyer- part II

Must-know basics of Home electrical components for an Indian home buyer- part II

This is part two of the article on what Home electrical components mean, and do for you.

Please do go through part-1 of this article for better understanding and logical continuity.

Knowing what is an electrical system in the apartment is important. This way, you are not only aware of the basics but can ensure that you know the questions to ask your builder while buying your apartment in India.

basics of Home electrical components  for an Indian home buyer

The Home Electrical components can not be taken lightly, and it is critical to know the entire electricity-related mechanism your apartment builder is offering.

basics of Home electrical Components

Cable joints

PVC Cable Connector- A home electrical components

[Source- https://www.indiamart.com/]

Electronic Spices 10pcs Cable Connectors- Home electrical components

[Sourcehttps://www.flipkart.com/ ]

  • Joining cables by twisting the strands and then insulating them with a tape is prone to risks and hazards
  • It is advisable to use cable connectors
  • A heat-shrinkable sleeve or a heat-shrinkable sleeve with solder provides extra insulation when you have to join the cables
  • The risk happens when you have a loss of adhesion to the adhesive pipe. This makes the cable naked and direct contact with electricity becomes possible- that’s risky


The Home Electrical components - A fuse provides protection from short and overloaded current
  • A fuse provides protection from short and overloaded current
  • This is in turn based on the connected appliance and their current usage
  • A blown-up fuse needs replacement, and this is inconvenient. The solution is to use an MCB (Miniature Circuit Board)
  • However, MCB can help if used at the distribution board i.e. primary protection
  • Make sure your builder has installed fuses with the right rating MCB


MCB SP B Curve- A  Home electrical components

[Source- https://www.havells.com/ ]

  • MCB or Miniature Circuit Breaker helps protect from short and overload current
  • MCBs are very popular and are provided by most builders
  • MCBs are provided at the distribution and sub-distribution board
  • The standard sizes of MCB for load vs. rating are 1-4A/6A, 6A/10A, 16A/20A, 20A/25A, 25A/32A, 32A/40A etc.
  • The builder must have the house wiring experts or Engineers fit the right size as per your apartment needs
  • MCBs are available in two variants: Type B and Type C. If you have an appliance with a motor using a Type C variant. For loads like lights, Fans, TV, etc. a Type B variant is normally used


RCCB 'AC' Type DP -A  Home electrical components



  • RCCB or Residual Current Circuit Breaker is the best protection from electric shocks caused due to leaks in current
  • MCB detects short circuits or overload
  • However, the RCCB detects minute current leakage
  • So, an RCCB in a house is a must-have
  • RCCB cuts off the electricity supply whenever it detects current leakage beyond a certain level
  • RCCB manufacturers recommend 30 mA sensitivity for household loads. Some builders provide 60 mA sensitivity instead so that frequent tripping does not occur
  • RCCB stands for residual current circuit breaker.
  • RCBO stands for a residual current circuit breaker with integral overcurrent protection.
  • The residual current circuit breakers with overcurrent protection are technologically more advanced. They are a more comprehensive solution
  • RCBO is the latest in the market, which is a combination of RCCB and MCB. It gives protection against short circuits as well as current leakage
RCBO 'A' Type SPN 2M- A Home electrical components


[Source- https://www.havells.com/]


  • Earthing is an essential aspect of electrical wiring and acts as a “drainage” for leaking current
  • All appliances must have proper earthing
  • You must check if your home has all the main outlets fully covered with Earthing
  • The metallic portion of any home device is connected with the wire that goes in the top (thick) pin of a three-pin plug
  • Earth wire needs to be running throughout the house
  • The earth wire collects leakage current from any part of the house and returns it back to its source through the earth
  • Earthing safeguards the premises from lighting and earth fault situations. Plus, it offers low resistance and a safe path for lighting/fault current
The Home Electrical components- Earth wire needs to be running throughout the house

How is Earthing done in a residential building?

Explaining Plate Earthing:

  • GI or tinned copper Earth wire is bolted to the plate before burying it by means of nuts, bolts, and washers at a depth of 3 meters or more
  • The Earth plate is embedded in an alternative layer of coke and salts
  • The wire is made to pass through a GI pipe and is securely bolted to an Earth-plate
  • Some water is poured into this GI pipe. This increases conductivity. It is securely bolted to an earth plate with the help of a bolt nut and washer made of copper, in case of copper plate earthing and of G.I.
  • Earth wire is connected to the Earth point of the socket and is finally covered with soil
The home electrical components-Earth wire is connected to the Earth point of the socket and is finally covered with soil

Modern ways in apartments are far more complex, but the idea here was to explain only the basics.

It is perfectly fine to err on the side of caution when it comes to the Home Electrical components of your new apartment!

“Every step of life shows much caution is required.”

Johann Wolfgang von Goethe-


To know more about “Must-Know Basics Of Electricals For An Indian Home Buyer- Part IClick here!

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