A copper wire with a cross-sectional area of 100 square millimeter weighs more than 1 meter The specific gravity of copper is 8.92 g / cm3. How heavy should a meter of wire be? Summer solstice is coming, man, I'm the same as you, but I'm wrong. What's the matter? The actual weight is much more than the theoretical weight

A copper wire with a cross-sectional area of 100 square millimeter weighs more than 1 meter The specific gravity of copper is 8.92 g / cm3. How heavy should a meter of wire be? Summer solstice is coming, man, I'm the same as you, but I'm wrong. What's the matter? The actual weight is much more than the theoretical weight

892 G
100mm2=1cm2
1m=100cm
So the volume is 100 cubic centimeters times the specific gravity is 892 grams

What is the resistance coefficient of copper cable?

Resistivity is the property of a material. It has nothing to do with its thickness, but with temperature and its temperature coefficient
R(T)=R(20)+K*(T-20)
R (T): resistivity at temperature T
R (20): resistivity at 20 ℃
K: Temperature coefficient of resistivity
The resistivity of copper at 20 ℃ is 0.0175, and the temperature coefficient of copper resistivity is about 0.000393
Hope it works for you

What is the resistance of a 240 meter cable in 1000 meters?

164 GB

Function of leakage protector
Generation of electric leakage

Working principle of leakage protector:
Leakage protection is a device to detect the input and output current of a circuit. If the current is inconsistent and exceeds its preset range, it will trip and power off in 0.01 second
If it is not adjusted manually, it will not recover automatically