If you install electrical wire that is too thin or possesses insufficient ampacity to handle a 60-amp circuit load, the undersized conductor will act like a heating element, creating extreme electrical resistance when heavy current flows through it. This excessive resistance generates intense thermal heat that rapidly degrades the wire's plastic insulation, melts surrounding jacket materials, and creates a severe, hidden fire hazard inside walls or conduits. While the overcurrent protection breaker is designed to trip during massive short circuits, prolonged moderate overloads on undersized wire will cause progressive thermal breakdown and potential electrical fires long before the breaker triggers.
1 votes
Marked as accepted