I have a problem with an electrical circuit in my house. I have a circuit where the breaker trips repeatedly, but not immediately when I flip it back on. What I mean is this; I see that the breaker has tripped, so I flip it back on. After 4 or 5 minutes, the breaker is invariably trip again. It never trips immediately, but there is that gap of time between when I turn it on and it trips.
The circuit is barely loaded. Straight from the breaker is an outlet in the garage (where I usually plug in my water softener but I don't have one at the moment). From there, the wire goes outside and is buried all the way to a shed. I have enclosed the buried wired in that grey conduit all the way from the outside of the house into the shed. In the shed, I have four outlets (with rarely anything plugged in unless I'm weed-whacking or something) and four switches going to four lights. That's it.
I've wondered (and dread) that there's a short somewhere in the outside part of the wire but I don't know why the breaker wouldn't trip immediately after I flip it back on. Could it be the breaker is no good. Any thoughts on the best way I could begin testing where the problem is?
Thanks in advance for any advice. I greatly appreciate anyone's help!
Greg