[Shop-talk] Ejection pump system problem

[Stevie G]

If you are comfortable working around electricity, pull the cover off the
breaker panel and make sure the screws that attach the wires to the breaker
are tight.  We scanned the panels at the hospital every year with a thermal
imager to make sure all the connections were tight.  Loose wires = increased
resistance and then the breaker tripping.
This actually happened on my friend's hot tub.  We chased a few different
issues but eventually ended up at the breaker panel.

Good luck with it.
I've seen some decent advice here.