I have been reading into wiring and circuits and found someone post that they had a circuit breaker tripping because of a loose wire in the circuit. They claimed the hot screw/lug combination increased the resistance in the loop (because it created heat) which is why the breaker was tripping. Now if I understand properly if the resistance is increased, the current is decreased (V=I*R) and this shouldn't trip a breaker.
My understanding of a breaker is that if too much current runs through it, the breaker will trip or blow depending on the type (it will disconnect the circuit either way).
Could someone confirm that what actually happened is this loose connection (somehow) reduced the resistance in the circuit, thus tripping the breaker? If so, does anyone know how it could be reduced at an expected termination point?
He claimed that by tightening the screw it removed the short circuit.