To answer this question, we need to understand the following questions.
1. What is the relationship between copper wire and its electric capacity?
2，2.5 square copper wire this 2What does 5 mean?
3， 2.What is the safe carrying capacity of 5 square copper wires?
4. Calculate the corresponding power according to the safe carrying capacity, and you will know how many household appliances you can carry.
Let's take a detailed look at it, 1. What is the relationship between copper wire and its power load?
The above diagram has most of the information we want, let's interpret it, the specifications, to our commonly used 25 copper wire as an example, 1x178, where 1 refers to the unit one, and 178 refers to the diameter of the copper wire.
Through this, we can see that the thicker the copper core (the larger the cross-sectional area), the greater the corresponding safe charge, and other conditions such as the set temperature are the same.
So that's the relationship between them, the larger the cross-sectional area of the copper core, the greater the charge.
2，2.5 square copper wire this 2What does 5 mean?
We can see by ** that 25 square this 25 refers to the area of the cross-section of the copper core of the copper core wire, so his full name should be 25mm2 (square millimeter), what is this concept?
And a square centimeter is 100 square millimeters, that is to say, its cross-sectional area is 2 of a fingernail5%。
3， 2.What is the safe carrying capacity of 5 square copper wires?
The above table gives some data, but there are certainly many different factors in our daily life, so we will greatly control the scope of security data in practical use.
Generally speaking, the safe ampacity of a copper wire is 5-8a(amps) square millimeter, so it is in the form of 25 square copper wire as an example, is about 20A, no more than 25A, so you may not have a concept, let's convert,Power p = voltage u current i
This current i is the current carrying capacity we mentioned above, China's civil electricity voltage is generally 220V (volts), so the safe current carrying capacity of 20-25A, the corresponding power is 220X20 25, which is between 4400-5500W.
4. Calculate the corresponding power according to the safe carrying capacity, and you will know how many household appliances you can carry.
Many home appliances will indicate the required power on the product, so you can check it carefully.
This is simple, just add up the power of the electrical appliances to know, compare the corresponding wires, you know how much wire you need, home air conditioners, microwave ovens, ovens, electric water heaters, bath bombs, etc. are the main power consumers, so the air conditioner is generally a separate road, and the microwave oven used in the kitchen, oven, etc. are used 4 square meters of high-power wires (7000w safety).
Through the answers to these questions, we know 2The power of the electrical appliance that can be safely brought up by 5 square copper wires is 4400-5500W.
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