- #1
QED-Kasper
- 32
- 0
Hi guys,
I don't understand why when one touches both the live wire and neutral wire in the secondary of an isolation transformer, the current in the live wire and the neutral wire in the primary will be the same. This is described in my book as the reason why a residual-current device in the primary can't do its work in such situation. I understand that part. But why will the current in this situation be the same in both wires, while if its done without an isolation transformer the current will flow only to the earth, thus causing a current difference in the wires?
I don't understand why when one touches both the live wire and neutral wire in the secondary of an isolation transformer, the current in the live wire and the neutral wire in the primary will be the same. This is described in my book as the reason why a residual-current device in the primary can't do its work in such situation. I understand that part. But why will the current in this situation be the same in both wires, while if its done without an isolation transformer the current will flow only to the earth, thus causing a current difference in the wires?