Never had the breaker trip before. A 220v/20a GFCI breaker in house panel goes to a junction box outside near pump with a switch in the box. This j-box is then hard wired to WhisperFlo 1hp pump. The key here is the junction box has a switch used to turn pump on or off, just like a light switch.
The breaker tripped and would not reset, I hear a hard click when I move breaker to ON position as it trips immediately. I turned off the j-box switch and breaker does the same thing. Can I assume it's not the pump and there's a problem between the breaker and the junction box (moisture, water, etc) if it trips with the switch off? The pump is rather old but impeller spins freely. I can't see how the pump would cause this if I have that j-box switch off, I use that switch all the time to turn pump on and off. Never had the breaker trip.
Thanks in advance
-edit- I forgot to add there is a mechanical electrical timer (high voltage one with a clock dial and stops that move a switch) between the breaker and that junction box. If I turn timer off the break of course stays on making me think the breaker is OK.
The breaker tripped and would not reset, I hear a hard click when I move breaker to ON position as it trips immediately. I turned off the j-box switch and breaker does the same thing. Can I assume it's not the pump and there's a problem between the breaker and the junction box (moisture, water, etc) if it trips with the switch off? The pump is rather old but impeller spins freely. I can't see how the pump would cause this if I have that j-box switch off, I use that switch all the time to turn pump on and off. Never had the breaker trip.
Thanks in advance
-edit- I forgot to add there is a mechanical electrical timer (high voltage one with a clock dial and stops that move a switch) between the breaker and that junction box. If I turn timer off the break of course stays on making me think the breaker is OK.