Calculate Cable Size [4K · 360p]
You need to power a 12V DC fridge that draws 5A, located 15 meters from the battery. You want a max 3% voltage drop.
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The basic DC / single-phase AC formula is: You need to power a 12V DC fridge
Disclaimer: This guide is for educational purposes. Electrical work can be dangerous and fatal if done incorrectly. Always comply with local codes and regulations, and hire a qualified electrician for permanent installations. calculate cable size