I just finished wiring up my irrigation well pump. The circuts were 240V from the main panel outside to the a pump start relay. The relay is controlled by my rain bird. Everything is working and no sparks but I have a few concerns.
When I first energized the circuit I noticed a 61V difference between red and black. Black and GND 120, red and GND like 20. I turned off everything and did a resistance test between the bus bar and the red. High (infinite) resistance. I pulled the breaker out and took some sand paper to the contact on the bar. Everything is good now. I never cleaned the bus bars. Was I supposed to? What should I use?
I'm not sure if crimp connectors are to code so I ended up twisting my stranded wire around the screws. Everything works but it looks "ugly". Are my connections bad? Should I get crimp terminals?
Are my connections up to code? Stranded wire is a PITA to work with but thats all home depot sells. I want to ensure everything is safe.
In case you ask I used 3/4" PVC conduit, THHN #10 wire, 30A breaker. I ran GND,Neutural,L1,L2 to my pump start relay. I simply capped off neutural. I may want to add a subpanel and GFCI down the road.
Images at (I don't have enough rep so copy the links into the browser)