I have 1 GFCI in the bathroom On the 1st floor. The line side is sourced from the main board, and the load side has 3 standard duplexes in the 2 bathrooms on the 2nd floor. After moving in to test the 3 outlets on the 2nd floor, we found that the GFCI always trips when an appliance is plugged in any of the 3 outlets - we can never use any electrical appliance with these 3 outlets! We had a further check and noticed:
- The white line from the load side of the GFCI on the 1st floor is capped and not connected. When connected, the GFCI trips.
- Without connection of the white wire, when we plugged a voltage meter into each of the outlets on the 2nd floor, the meter was on; but when plugging in any electrical device (even a cell phone charger), the GFCI trips.
- The wiring of the 3 downstream outlets connects to each other is normal.
Please help with troubleshooting methods.