Choosing the wrong cable size isn't just an inconvenience—it’s a fire hazard. Undersized cables overheat, melt insulation, and can cause voltage drops that damage your equipment.
If your 5A fridge runs through a hot attic (0.87) and is bundled with 4 other cables (0.80): ( 5 / (0.87 \times 0.80) = 5 / 0.696 = 7.2A ) calculate cable size
Step 3: Apply the Voltage Drop Formula The basic DC / single-phase AC formula is: Choosing the wrong cable size isn't just an