In the long journey of decoration, we first have to face the two major problems of layout transformation and hydropower transformation.
In the process of hydropower transformation, friends often encounter a tangled problem, that is, the selection of wire diameter, that is, how thick the wire at home we often say.
Generally speaking, household circuit wires will choose 25 square millimeters of wire, and in some special cases, 4 square millimeters of wire will also be used.
So, there are friends who want to ask, if all the family uses 25 square millimeters of wire, will this work?
Actually, there is no absolute answer to this question, because it involves many factors!
From the point of view of the use of household lines, it is generally buried through pipelines, and the length of each line is not too long.
In this case, 2The load of 5 square millimeters of copper wire is calculated as follows:
Safe ampacities for household use
A 2How can I check the safe capacity of a 5 square millimeter copper wire? You can check its safe current carrying meter, which is about 8 amps per square millimeter, 25 square millimeters is 20 amps.
You can also check the safety current carrying meter in different laying situations, which shows a relatively large current value, generally around 22 amps.
Household load power
The so-called load power actually refers to the safe current.
Assuming a safe current of 20 amps, then the load power is 4400 W, p= =220 V 20 A. According to the data on the safety load table, it can reach 4840 W of power.
Lighting circuits
The lighting circuit is used with 25 square millimeters of copper wire, so that you can illuminate all the lights in the room.
There is a main light source in every room and a main light source in the living room, but the total power of these light sources will not exceed one kilowatt.
2.5 square millimeters of copper wire, can withstand a load of 4000 watts, which means that in the process of decoration, only 25 square millimeters of copper wire, there will be no problems.
Socket circuit
Socket circuits, including all socket circuits, such as living rooms, dining rooms, bedrooms, etc. Sockets in a home are usually 10 or less in a ring, while there are about 2-4 socket circuits in a household.
In each circuit, the main wire used is 25 square millimeters of copper wire.
For example, the TV in the living room has a power of about 600 W, a desktop computer is about 400 W, a water dispenser is about 500 W, and a TV and computer in the bedroom.
Air conditioning circuits
The air conditioner in the home usually has an independent circuit, such as the air conditioner in the living room and the bedroom, which are basically independent circuits.
There are many cabinets in the living room, and there are also in other places, there are three cabinets with a power of 5500 watts, and ordinary machines, 15 units, 2500 watts.
This means that in a wall-mounted air conditioner, as long as you don't use 4 square mm copper wires, you won't have any problems.
Some kitchen appliances
There are many appliances in the kitchen, such as refrigerators, induction cookers, microwaves, electric water heaters, kettles, range hoods, and so on.
For example, the refrigerator is very small, only 200 watts, but the induction cooker can be 3000 watts, the microwave oven can be 1000 watts, the kettle can be 1000 watts, plus the small kitchen, that is 20 million watts.
After calculation, the kitchen needs about 6000 watts of electricity, 2A 5 square millimeter copper wire can withstand a load of up to 4,400 watts, so it can only be used to load some kitchen utensils.
So, how to choose the main kitchen of the circuit? Personally, I think that 4 square mm copper wire is the best because of its high safety and stability.
Most bathroom appliances
The use of toilets depends on the renovation of each home. In some homes, electric water heaters, smart toilets, bath bombs, ventilation fans, washing machines, and lights are installed.
An electric water heater costs 2500 W, a bath bomb costs 2000 W, and small appliances such as washing machines add up to 4500 W.
As for 2.5 square mm wire, that's just right. However, for safety reasons, we still recommend that everyone use a 4 square mm cord in the toilet.
Of course, if you put the washing machine on the balcony and don't need to install a bath bomb, you can also use 25 square millimeters of copper wire.
Special electrical circuits
For example, ** air conditioner, one 2500 watts, two 5100 watts, three 7500 watts.
Electric underfloor heating consumes a lot of electricity, 150 watts per square meter, that is, a 100-square-meter house is 15,000 watts.
This requires special lines, and everyone knows the number of lines. But, to be honest, there are few people in the family who install underfloor heating, and that's because it's too expensive. It's better to use gas, which is cheap and affordable.
Review:
Overall, the home uses 2 for allA 5 square millimeter wire is theoretically feasible, but we need to choose the most suitable wire according to the actual situation and needs. In addition to the kitchen and a small number of bathrooms, as well as the cabinet air conditioner in the living room, the copper wires used in our wiring renovation only need 25 square millimeters is enough, only the above few places need 4 square millimeters of copper wire. If there is anything unclear, ask me in the comment area!