1 square wire, 1.5 square wire, 2.5 square wire, 4 square wire, 6 square wire, etc. How many watts can these wires carry? This is what everyone is more concerned about.
Let's take a closer look at how many watts 1, 1.5, 2.5, 4, and 6 square meters of wire can carry.
First of all, let's give some popular science to the newbies. Old drivers can skip it~
1 square wire: A wire with a cross-sectional area of 1 square millimeter
If we calculate according to the formula: area = radius²×3.14
Then 1 square line = about 1.13mm
1. How many watts can 1 square meter of wire carry?
An "empirical formula" commonly used by electricians: As long as it is a copper-core wire, each square millimeter of cross-sectional area can safely pass a rated current of 4-5A; in a 220V single-phase circuit, the current is about 4.5A for every 1kW of power. ; In a 380V three-phase balanced circuit, the current is about 2A for every 1kW of power. The above values are very close to those calculated using physical calculation formulas. Therefore, in order not to memorize those "complicated" calculation formulas during work, electricians only need to remember these. Then according to this algorithm, we know that if a copper core wire of 1 square millimeter of cross-sectional area is used in a 220V single-phase circuit, it can safely carry the current of a 1kW load; if it is used in a three-phase balanced load (such as a motor) circuit, it can safely carry the current flowing through the 2.5KW load.
2. How many watts can a 1.5 square meter wire carry?
If the power cord is a copper core wire, firstly, the maximum allowable working current for open wire installation is 20A, which is 4400 watts; secondly, for concealed installation in steel pipes, the current is 16A, and the power is 3520watts; thirdly, for concealed installation with PVC pipes, the current is 14A, Then the power is 3000 watts.
3. How many watts can a 2.5 square meter wire carry?
How many kilowatts of electricity can a 2.5 square meter electric wire receive? The wire load current value specified in the national standard GB4706.1-1992/1998 is that a copper core wire of 2.5 square millimeters is 16A～25A, about 5500 watts, and an aluminum core wire of 2.5 square millimeters is 13A～20A, about 4400 watts. It is safe if the 220VAC voltage does not exceed 10A for a long time. The most standard is that it does not exceed 15A most of the time.
4. How many watts can a 4 square meter wire carry?
A single-phase power supply of 1kW is approximately 4.5A, and an 8kW power supply is approximately 36A. The current carrying capacity of a 4-square-meter wire (single plastic copper wire) is about 30A, which is smaller. Change to a 6-square-meter wire (single-run power supply). Your meter and gate must be replaced with larger ones. It doesn't need to be such a high power, at least 4kW is fine. How many kilowatts of electricity can a 4 square meter wire carry? It depends on whether you use 220V household electricity or 380v factory power. If a 220 square meter wire can load 6 to 8 kilowatts.
5. How many watts can a 6 square meter wire carry?
How many kilowatts can 6 square meters of wire carry? There is no direct relationship between the power wire diameter and the transmitted power. Generally speaking, 6 square meters of wire is more than enough for air conditioning wires. Maintenance power supplies on construction sites generally use 10x6+1x4 cables. As for the current intensity it can withstand, according to my construction experience, this kind of cable is generally controlled by a 63A air switch. 6 square meters of aluminum wire can load 6kW, and 6 square meters of copper wire can load 10kW.
