The rated power of refrigerator is 70W, the power consumption is 0.5kw.h/24h, and the rated power of TV is 65W

The rated power of refrigerator is 70W, the power consumption is 0.5kw.h/24h, and the rated power of TV is 65W

The refrigerator consumes 0.5 degree every day, the TV is 65 watts, and the power consumption is 0.65 degree after ten hours. The refrigerator runs for a while, stops for a while, and actually runs for about 7 hours. 70W * 7 = 490w
At present, the power of a machine is 15 kW. How much cable, meter and air switch do you want? The voltage is 380 three-phase four wire
According to the number you provide, the rated current of your equipment is about 27 or 8 currents, and the distance is about 100 meters. You can use a copper cable of 10mm2, a direct meter of 80A, and an air switch of 100A
How to calculate the resistivity of copper wire
Measure the length, cross-sectional area and resistance of copper wire, and then calculate it according to the calculation formula of resistivity. If the resistivity of copper wire is too small, you can use longer and thinner copper wire to measure its resistance, and then calculate, and the error will be less
The power consumption of refrigerator is 0.77kw. H / 24h. How many watts per hour?
How many degrees are you going to walk in 24 hours? How many degrees are you going to walk in 24 hours? How many degrees are you going to walk in 24 hours?
Brother 7881065, don't talk nonsense. The power consumption of the refrigerator is 0.77 degrees a day, that is, one hour is about 0.77 divided by 24, which is 0.03 degrees. Of course, this data is measured by the manufacturer in a specific environment. The national standard is that the room temperature is about 25 degrees, the refrigerator is empty, the temperature of the freezer is 18 degrees below zero, and the temperature of the freezer is between 0-10 degrees. The power consumption is 24 hours. Of course, in actual use, The higher the ambient temperature is, the higher the power consumption will be. The lower the temperature in the refrigerator is, the higher the power consumption will be. A lot of food will be placed at one time, and the compressor will not stop working for a long time, This will also lead to an increase in power consumption. The power consumption of the refrigerator in summer is definitely much larger than the nominal one
7881065 brother's analysis is definitely wrong, 18.48 degrees a day, even if 1 / 3 of the compressor is working, 18.48 divided by 3,
If you can sell more than 6 kilowatts of electricity in one day
300 square three-phase aluminum core cable, 300 meters long, how many kilowatts can be used? How much current? How big is the air switch? Three-phase four wire? How to use it
The economic current carrying density of 300 square aluminum wire is about 1A / m2, so the effective economic current carrying capacity is about 300 a
In this way, your cable can carry a load capacity of about S = v3x380x300 = 197.5kva, or about 200KVA. You can choose a standard switch with a rated current of 630A
Resistivity calculation formula
That is, P (resistivity) = s (cross-sectional area) r (resistance) / L (length)?
Resistance R = ρ L / S
So ρ = RS / L
What is the meaning of 0.66kw.h/24h power consumption of refrigerator and how to calculate the power of refrigerator
For example, 0.66kw.h/24h. According to the people in the store, the power consumption is 0.66 degree in 24 hours. Under what conditions is this 0.66 degree generated,
The 0.66 degree 24 hours mentioned by my family is under the condition of not opening the refrigerator
The refrigerator you said doesn't save electricity at all. It's better to buy Haier. My new Haier saves electricity than before. In addition, if you go to the shopping mall, Haier will save the most electricity. Now I don't dare to label it indiscriminately. The country caught it the year before last. The most electricity saving label is grade 1
How large and how many a air switches can 16 square cable use at most?
The current carrying capacity of 16 square copper core cable is 65A at 25 ° current carrying capacity, 61A at 30 ° current carrying capacity, 57A at 35 ° current carrying capacity and 53a at 40 ° current carrying capacity; the current carrying capacity of aluminum core at these temperatures is 51a, 48A, 45A and 42a respectively
If the upper circuit breaker of the cable uses air switch, the 16 square copper core cable is equipped with 80A air switch, and the aluminum core cable is equipped with 63A air switch
General air switch specifications: 16, 20, 25, 32, 40, 50, 63, 80, 100
How many ohms per meter is the resistance of 1.13MM pure copper wire?
It can be near 1.13MM
The resistance of a conductor with a length of 1 meter and a cross-sectional area of 1 square millimeter at room temperature (at 20 ℃) is called the resistivity of this material. The resistivity of pure copper is 0.0175 Ω / m
The cross-sectional area of 1.13MM pure copper wire is 1.00mm2, so its resistance is 0.0175 Ω
If the power of household appliances is 1000 watts, will 1000 watts be used
My home has electric heating, one is 2000 Watts, two are 4000 watts, so the actual wattage is 4000 watts an hour?
Generally speaking, the maximum power is 2000. If it is not used, it is estimated that it will be low. Normally, it will not be higher. Generally, it will only be low