Why Earth Pin of 3 pin plug is longer and thicker than other | Basic Electronics
Why Earth Pin of 3 pin plug is longer and thicker than other?
Earth pin is long for first to get connected so if any leakage to body of equipment from live line inside equipment will pass through the earth and person will safe.They are thicker to give more area of contact so that leakage current will pass with less resistance instead of passing through the working person.
