The following lines were added (+) and removed (-):
The GCFI outlet is tripped when the current balance between the ungrounded “hot” conductor and the grounded conductor is not the same and that difference exceeds a tolerance which is typically in the range of four to six milliamps. The unbalance indicates that part of the current flowing in the circuit is being diverted such as would be the case if flowing through a human body. The GCFI outlet is tripped when the current balance between the ungrounded “hot” conductor and the grounded conductor is not the same and that difference exceeds a tolerance which is typically in the range of four to six milliamps. The imbalance indicates that part of the current flowing in the circuit is being diverted such as would be the case if flowing through a human body to ground (the floor or otherwise.)