Easiest way to Understand Electrical Wiring, Colour Coding & Installation

Electric Wiring is often termed because the source of electricity conduction being connected to varied electrical apparatus or devices.

Electrical wiring with regards to installation are often broadly classified as follows (refer diagram below)

Type 1: Ring type electrical wiring: Simple! to form it easy for you, let me offer you a perspective. Even as the name suggests, the ring type electrical wiring originates from one device and returns to an equivalent device forming an endless loop or a hoop .

Now, where can these sorts of electrical home wirings be used?

These are often utilized in areas where devices share an equivalent cable feed. they create the simplest fit appliances which will be used at different times of the day. Ring wiring would typically be installed in bedrooms, living rooms, kitchens (except major Appliances like cookers), partitioned office areas, etc.

Type 2: Radial Electrical Wiring: check out the name closely! Radial! A wiring that’s connected to at least one source and “branches” out towards areas of supply are often termed as radial electrical wiring.

Now, where can these sorts of electrical home wirings be used?

Unlike the ring type, these sorts of wirings largely focus on massive appliances that are under continuous operations. Some examples might be boilers, water pumps, cookers, heaters, air conditioners, safety alarms etc.

Type 3: Final Electrical Wiring: Again, allow us to bring our attention to the word “final”. electrical wiring that connects source and appliance directly are often termed as final electrical wiring via socket-outlets, switched flex outlets, isolators, ceiling roses, etc.

The sizing of ultimate electrical wiring must be in accordance with the connected load on each circuit.

Type 4: Distribution Electrical Wiring: Distribution! An electrical wiring amongst distribution boards is often called distribution electrical wiring.

Colour Coding for Electrical Wires:

Following colour coding standards is important and mandatory since each colour signifies a specific function of the wire. India follows the RGB code where R stands for Red, G stands for Green and B stands for Black.

Red – Red wire indicates the introduced circuit which may be considered as an eager beaver . It must be kept in mind that a red wire is often connected to only red and black other wires.

Black – Black wires denotes neutral wire which is connected to neutral bus bars inside an electrical panel. Note that black wire must be connected to black wire only.

Green – Green wire signifies earthing and may be connected to green wire only

Let us quickly get into installation: –

All electrical home wiring installation must follow IEE regulations or otherwise approved by a corresponding standard of equal value. Also, all the wiring should strictly be rigid PVC conduit placed within the wall or ceiling or false ceiling.

Some of the opposite IEE regulations that require to be followed are (Source –

Selection of the dimensions of the conduit

Usage of factory-made conduit

Conduit to be kept at 100mm from pipes and other non-electricals

Individual conduits to be used for:

Lighting System

Power Outlets

Emergency Light

Telephone System

Fire alarm

Sound System

Television System

Computer System

Conduit run on surfaces shall be supported by PVC saddles

Saddles shall be at intervals of less than 60 cm

Fixing screws must be rustproof.

Exposed conduits shall be neatly run parallel or at right angles to the wall of the building.

Pull boxes must be provided at the proper angles and at a distance not exceeding 20-meter length.

Suitable fish wires shall be drawn altogether conduits before they’re embedded.

Inspection boxes shall be provided for periodical inspection to facilitate draw and removal of cables. Such inspection boxes shall be flush with the wall up the case of recessed conduits.

Inspection boxes shall be spaced at less than 12 meters apart or two 90-degree solid bends or equal.

Use of PVC conduits in places where ambient temperature is 60-degree c or above is prohibited.

PVC conduits shall not be utilized in outdoor systems. Conduits shall be free from sharp edges and burrs and grease or oil shall not be used for the aim of pulling the wire. the whole system of conduits must be completely installed and rendered electrically continuous before the conductors are pulled in.

A ground wire of not but 2.5 sq. mm copper shall be run inside each conduit. The wire shall be insulated, and colour coded.

Top 5 Tricks for nice Electrical Wiring:

Electrical home wiring can choose a toss if not performed efficiently .

Follow these #tricks to urge it right!

One) Tried and Tested:

2000+ deaths occur per annum within the country thanks to electrocution. If this number astounds you, note that 2016 saw over 11,000 electrical accidents within the country. Nearly 4,800 of those accidents were fatal.

Hence, always check the wiring and therefore the devices before you begin performing on them to avoid electric shocks.

Two) Detangle

Uncoil the cable and straighten it out.

Arrange it on the ground to form the handling easier.

A neat working may be a better working

Three) Replace and check the amp!

Old isn’t gold all the time. Get obviate the old wiring and choose carefully among the plethora of options available including flame resistant, heat resistant etc.

Amp checking may be a must for all wiring during both installation and replacement. E.g. a 30-amp circuit must have a right-gauge wiring to stop fire hazard.

Four) Stay Grounded

Understanding the grounding system is imperative. It helps redirect extra current just in case there’s an error or fault. Following the wiring diagrams to make sure effortless work is that the key.

Five) Clamp it and Box it

Accidents can cause irreparable damage. Protective enclosures not only protect the wiring and enhance the sturdiness but also enable protection to people performing on it. So, Clamp it or Box it!

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