Does anyone know where to get more tech info or training info for pv installations and troubleshooting? I am getting more involved in the field but want to learn more about how the systems are installed and specs are laid out as well as troubleshooting inverters etc. Looking for info on sizing systems and wiring. Any info or sites with some info very appreciated. If anyone has experience in the field I will take it. Also curious about the 156% wire sizing for continuous use? I heard that it's doubled on the dc side. Thanks.