Materials Required For House Wiring And Their Specifications

July 24, 2020October 15, 2022 CS Electrical And Electronics

Hello guys, welcome back to our blog. In this article, we will discuss materials required for house wiring and their specifications. While doing house wiring all materials that should be used will be discussed in this article.

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Materials Required For House Wiring

1) Cables

For finding the size of the conductor actual load current is to be calculated. Then it is to be multiplied with a factor of safety which can be taken as 2 approximately to get the load current required. Then by referring to the wire table the size of the conductor can be determined.

The voltage grade of the cable is taken as 1.1 kV. Nowadays all the conductors are stranded i.e., multistranded by which both conductivity and flexibility will improve.

Usually aluminium conductor sizes are of 2.5 sq mm, 4 sq mm, 6 sq mm, 10 sq mm, 16 sq mm, 25 sq mm, 35 sq mm, 50 sq mm, 70 sq mm, 95 sq mm, 120 sq mm, 150 sq mm, 185 sq mm, 24 sq mm, 300 sq mm, 400 sq mm etc. whereas copper conductors sizes are 1 sq mm, 1.5 sq mm, 2.5 sq mm, 4 sq mm, 6 sq mm, 10 sq mm, 16 sq mm, etc. Apart from mentioning the type of insulation used for the cable is prime important along with conductor material.

2) P.V.C Conduit

The major specifications of the conduit are the diameter of the conduit and its thickness.

Example :

(a) 20 mm PVC pipe 2 mm thick.
(b) 40 mm PVC pipe 3 mm thick.
(c) 50 mm PVC pipe 3 mm thick etc.

3) Casing and Capping

Well, seasoned varnished teak wood casing with 2-grooves having a cross-section of 38 mm × 12 mm, 44 mm × 12 mm, 51 mm × 12 mm along with varnished teak wood capping of 4 mm, 6 mm, and 10 mm respectively. The PVC casing and capping of sizes 30 mm × 12 mm and 40 mm × 12 mm with 3 mm thick.

4) Batten for CTS or TRS system

Well, seasoned varnished teak wood battens are available with a width of 13, 19, 25, 31, 38, 44, 50, 56, 63, 69, and 75 mm.

5) Clips for CTS or TRS system

Tin or Brass clips of the appropriate length of 30 mm, 40 mm, etc., of thick 30 or 32 SWG are available in boxes a box contains 100 numbers of clips.

6) Saddles

For saddles, the saddle material its thickness, and for which conduit it is required is to be mentioned.

Example: Brass saddle 1.5mm thick suitable for 25mm GI Pipe.

7) Switches

Full Specifications of switches controlling light fan or socket outlet cover the type of base material (porcelain or bakelite) shape of the base (round or oblong) the colour of the base (white, black or brown) type of switch (tumbler, concealed or pendant), the operation required (one way, two way, etc.) with voltage and current rating.

Example :

The material used: Bakelite or porcelain
The shape of the base: round
Type: tumbler or flush or pendant.
Current rating: 6 A or 16 A.
Voltage Grade: 250 V.
No of ways: Single way or two way of any made approved by I.S.

8) Wall plug socket

Specifications of wall plug sockets used for a table fan table lamp etc. and 16-ampere plugs are used for power circuits such as heater iron etc.

Specifications :

Material – Bakelite or porcelain base Bakelite covered.
Colour – White or Red.
Type – Flush or tumbler.
No pins – 2 pins or 3 pins, 3/2 pins.
Current rating – 6A or 16A.
Voltage Grade – 250 Volts of any make approved by IS.

9) Lamp Holders

Material – Brass or Bakelite
Colour – White or red
Type – Batten, pendant, angle, slanting bracket
Current range – 6A
Voltage Grade – 250 V of any make approved by IS

10) D.P switch

The material used – porcelain base with bakelite cover
Type – Flush or Ironclad
Current rating – 16 A, 32 A or 63 A
Voltage grade – 250 V of any make approved by I.S.

11) Ceiling Rose

Material – Bakelite
Type – Two or three plate
Current rating – 6A or 16 A
Voltage grade – 250V

12) Fluorescent lamp

Wattage – 20W or 40W or 65W or 80W
Length of the tube – 1.2 M or 0.6 M
Number of fixtures – single or double
Type – Domestic / commercial fittings / street light fitting / industrial fitting
Rated voltage – 250V
Colour of illumination – White, Blue, Red or Green or any make approved by IS.

13) Mercury Vapour Lamp

Wattage – 80w, 120w, 250w, 400w
Voltage rating – 200V to 250V
Operating frequency – 50 Hz
Current rating – 5 Amp for 80W and 125W and 10 Amp for 250W and 400W.
A complete set with choke, condenser, and glass tube of any make approved by IS.

14) Neon Lamp

Wattage – 5 watts
Voltage – 110 Volts AC and 150 V DC
Type – 50 Hz for AC supply of any make approved by IS.
Operating frequency – 50 Hz for AC supply of any make approved by I.S

15) Incandescent lamp

Wattage – 15W, 25W, 40W, 60W, 100W, 200W
Type – Vacuum or gas filled
Voltage rating – 220 to 250V
Operating frequencies – 50Hz of AC supply of any make approved by I.S.

16) LED lamp

Wattage – 3, 4, 5, 6, 9, 11, 12, 15, 18, 20, 22, 25, 35, 40 or 45 watts.
Voltage – 200-250 V
Type – Bulb, tubes, disc, penal, candle, etc.
Colours of Light – Green, White, Pink, Blue
Power factor – 0.93

17) CF Lamp

Wattage – 5, 7, 9, 11, 15W, 19W, 22W, 25W etc
Rated frequency – 50 Hz supply
Type – Integrated(tube and lamp in a single unit) non-integrated (like a fluorescent tube)
Colour of light – Cool white (Daylight)
P.f – 0.56
Voltage rating – 220 to 250V

18) Ceiling fan