A cable that is too small can melt or fail during a fault, leading to fire or electric shock. The Main Formula (IEC 60364-5-54):
Use a dedicated Cable Sizing Calculator that accounts for fault loop impedance and local regulations. Which type of Earth Size Calculator Earth Cable Size Calculation Software | Electrotechnik earth size calculator
While we know Earth is "big," putting a specific number on it helps us understand complex global issues: A cable that is too small can melt
If you are working on a school project or a creative writing piece, these tools provide the "hard science" needed for realism. For example, if you are designing a fictional planet, you can use Earth’s dimensions as a baseline to calculate how much stronger or weaker gravity would be if you doubled the planet's radius while keeping the same density. For example, if you are designing a fictional
The calculator determines the total area covering the planet using the formula: $$A = 4 \pi r^2$$ Where $r$ is the radius and $\pi$ is Pi (approx. 3.14159).