GFCI & outdoor fountain
We have a pump for our fountain that is plugged into a GFCI. It is the last outlet on the line. It has worked great until a week ago when it stopped working. We plugged the pump cord into an extension cord that was plugged into a non-GFCI outlet and it came on. However when it is plugged into the GFCI, it instantly pops that reset. We have replaced the GFC8 and the same thing happens with the new one. How do we fix this?