How much current is allowed to pass through two and a half square copper wires?

How big is the choice of copper wire at home has stumped many people, and what is the relationship between the copper wire diameter and the amount of current carried?Let's take a look at how the state regulates.

The maximum amount of current that a square wire can withstand depends on the material of the wire.

According to the formula, the current carrying capacity of an aluminum wire below the square is 9 times that of its cross-section.

For example, if the square wire has a carrying power of 220, the owner should consider it according to the actual electricity consumption (the power of the electrical appliances, the number of connected electrical appliances, and the strength of the wires) when carrying out circuit transformation.

The general copper wire safety calculation method is: the safe ampacity of the square millimeter copper power cord is 28A.

Power p = voltage u current i 220 volts 18 amps 3960 watts. The current value of the wire load (partial) specified in the standard

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The maximum current of the square copper wire is 28A. Generally, it can be calculated according to the following formula: square number 8 = current number, and the power is 220 square number 8.

For example, a flat bridge square wire has a carrying power of 220. The rated current of copper wire is calculated according to national or industry standards.

For example, according to the GB T General Provisions for Power Cables with Rated Voltage and Below Part 2: Current Ratings, a square millimeter copper wire has a current rating of 23A.

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5 amps, up to 10 amps, 10* so it is speculated that it can withstand a minimum of ampere, and a maximum of 25 amps. Hope it helps you and have a great day!

A: The square copper wire can withstand a current of 15A.

The "square" of Ziye copper wire refers to the cross-sectional area of the cable, which is in square millimeters, and the industry abbreviates "square" or "square", which is an important parameter of the cable. Find a practical hardware manual, copper wire per square safe load current is 6A, then there is.

Extension: The copper wire per square safe load current of 6A in the circuit is a common reference data value, and the rated current size of the copper trace is actually related to the line frame (laying) mode, but the rated current size change caused by the different line frame (laying) methods, the relative cable material, wire diameter and the size of the rated current change, account for a small proportion, so it is often ignored.

Single-core square copper wire can withstand 25A current.

32 amps or less.

The current carrying capacity of the square single-core copper wire is 32 amps, so it should be equipped with a leakage protector below 32 amps. That is, the square single-core copper wire is equipped with a leakage warranty of less than 32 amperes.

Wire and cable cross-section and current volume conversion multiple:

1. The square copper core wire can be multiplied by 5 times the cross-sectional area of the square copper core wire.

For example, the safe current that a 10 square copper conductor can pass through is 10*5 times = 50A.

A squared copper conductor can be multiplied by a factor of 4.

A square copper conductor can be multiplied by a factor of 3.

A square copper conductor multiplies its cross-sectional area by a multiplier.

A well-squared copper conductor can be multiplied by a factor of 2.

Commonly used electrical wiring configuration:

1. The power consumption of a computer is about 300W, and the current is about.

The power consumption of the air conditioner is about 800W, and the current is about 5A.

3. The power consumption of the large 3 hp air conditioner is about 3000W, and the current is about 14A.

4. The power consumption of an electric water heater is about 2000W, and the current is about 10A.

5. The power consumption of a microwave oven is about 1100W, and the current is about 5A.

6. The power consumption of a rice cooker and electric water boiler is about 1000W, and the current is about 4A.

Leakage protection switch configuration:

The home power supply line is generally 6 to 10 square millimeters of copper wire, the total current of household appliances should not exceed 30 to 50A, and the total power should not exceed 6600 to 1200W.

If the inlet wire is 6 square millimeters copper wire, you can choose a 40A leakage protection switch.

If the entrance wire is 10 square millimeters of copper wire, you can choose a 63A leakage protection switch.

In addition, the purchase and use of wires must meet the requirements of national wire standards and must have 3C certification. Non-standard and substandard wires cannot be used. <>