Breaker Sizes Explained: What Is a 40-Amp Circuit Breaker For?
Open your breaker panel and you will see a row of switches stamped with numbers: 15, 20, 30, 40, 50. Those numbers are the breaker’s amperage rating, and each one is matched to a specific wire size and job. Using the wrong size breaker is one of the most dangerous electrical mistakes a homeowner can…
