You may have seen that an electrician uses different wire sizes during housing wiring or in other applications. This is because different wire size holds different load capacity. If the wires are connected with a high load beyond the rated value, then the overloading can either damage circuits, appliances, or equipment. Therefore, choosing the right wire size for household appliances will avoid circuit damage and deterioration.
This article will make you stress-free and provide you with a complete guide about which wire size is suitable for your house wiring. So, follow us, and let’s dive in…
Table: Wire Size, Amp Rating, Power Ranting and Applications
The wire size defines the amount of current that can pass safely through the particular wire. See the table below which shows wire size, Amperical capacity, and applications:-
[Note: Considering the voltage supply of 230V and 50Hz Frequency, the below table are made]
Wire Size/ Wire Gauge (In Sq.mm) | Rated Amp Capacity (A) | Applications |
0.5 | 4 A | Low-voltage lighting and lamp cords |
0.75 | 8 A | Tubelight, Bulb, Fan |
1 | 12 A | Tubelight, Bulb, Fan |
1.5 | 16 A | TV, Iron, 6A Socket, Bedside Lamp, Fan |
2.5 | 22 A | AC (1.5 ton),Washing Machine, Water Pump, Geyser, Water Pump motor, Cooler & Exhaust Fan |
4 | 29 A | AC (2 ton), Geyser, Water Pump Motor |
6 | 37A - 51A | Main Circuit, Cooktop and Ranges |
10 | 68 A | Electric Furnaces, Large Electric Heaters |
Important Household Wiring Information
In this section, we are going to discuss a special case for selecting wire in a different situation. First of all, check out the use of wire color code from the image given below:
Stranded Wire Vs Solid Wire: Which one to use for house wiring?
In most cases, electricians prefer or use stranded copper wire over the solid wire. Sometimes the stranded wire is also known as flexible wire as it can bend or twist so that it can be easily routed through pipes and conduit in walls. Apart from it, other advantages are:
- Less heating & safe current flow
- suitable for crimp termination & patch cords connection
- Less skin effect in case of long and high voltage and power transmission
Wire loop from One Switchboard to Another
In order to connect one switch to another switch, this listed wire can be used according to your needs. Checked out:
Wire Size/ Wire Gauge (In Sq.mm) | Power Rating (Watt) |
1 | 500 W |
1.5 | 750 W |
2.5 | 2000 W |
Distribution Board to Room
In this part, the below wire size is used for the connection for the distribution board to the room:
Wire Size/ Wire Gauge (In Sq.mm) | Power Rating (Watt) |
1.5 | 1000 W |
2.5 | 2000 W |
4 | 5000 W |
Power Socket Wire Size
Wire Size/ Wire Gauge (In Sq.mm) | Power Rating (Watt) |
1.5 | 1500 W |
2.5 | 4500 W |
4 | 6000 W |
Energy meter to Distribution board
Wire Size/ Wire Gauge (In Sq.mm) | Power Rating (In watt) |
4 | 4000 W |
6 | 6000 W |
10 | 10000 W |
Wire size for UPS / Inverter
Wire Size/ Wire Gauge (In Sq.mm) | Power Rating (KVA) |
1 | 1 KVA |
1.5 | 1.5 KVA |
2.5 | 2 KVA to 3 KVA |
4 | 4 KVA to 5 KVA |
Schematic Circuit for House Wiring
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