GFI in bathroom tripped and wouldn't reset, purchased new one ,after unhooking old one I lost track of which set of wires were line in and which set were power out to the outlets.. How do I determine...
The wires coming from the circuit breaker needs to be connected to the line side of GFCI, the wires going to next receptacle goes to the load terminals. GFCI receptacles come in different ratings. That is about the only difference. Higher the rating the more sensitive they are.