Regular 15amp non-GFCI breaker, first circuit stop is outdoor 15amp GFCI outlet, second stop is bathroom 20amp GFCI outlet, last stop is bathroom plain 15amp outlet. Everything is correctly wired.
15a breaker -> 15a GFCI -> 20a GFCI -> 15a plain outlet.
Outside GFCI trips itself and the two downstream as normal. Bathroom GFCI in middle trips plain outlet, but not itself. Between the two GFCIs, there is an unused solid cover outlet box in bathroom above sink, about a foot away from the two bathroom outlets. Inside it a 14-gage (15amp) Romex enters (from outside GFCI), a 12-gage (20amp) romex exits, and their wires are connected correctly by colors. Then the 12-gage line continues to the 20amp bathroom GFCI, then plain wires connect the 20amp GFCI to the 15amp plain outlet.
15a breaker -> 14-gage romex -> 15a GFCI -> 14-gage romex -> 14-gage romex connects to 12-gage Romex -> 12-gage romex -> 20a GFCI -> wiring from 20a GFCI connects to 15a plain outlet.
- Would replacing the 20amp bathroom GFCI with a 15amp GFCI solve this?
- Is a 15amp GFCI effective / safe to use in bathroom on that 12-gage romex in the middle? I know it's legal for 15a outlets to be on 20a circuit, but will a 15A GFCI work correctly?
- Will the outside GFCI be enough to trip bathroom outlets off if bad things happen?
- Or do I have to color the air blue trying to fish 14-gage romex behind drywall to replace the 12-gage romex?
- Or...?
