On my last inspection I get a correction about installing a GCFI in a 4s box that contain 5 wires on it. one neutral and two hot that pass thru plus the neutral and hot for the GFCI. The inspector is based on the instructions of the manufacturer that on article # 6 Identify cables/wires said: DO NOT install the GFCI in an electrical box containing more than four wires...... I understand that in term of connection I have to have maximum four wires connected on the GFCI two line, two load. but according to the space on the box I am correct. Do anyone have this experience?