Even the most experienced professionals make mistakes, and PV systems present many opportunities for errors. In this paper we list some of the more common issues we've seen or heard about often enough … [Read more...] about 20 Common Mistakes Installing PV Systems
In the age of data, solar contractors, maintenance crews and system owners can see more system performance details than ever. But collecting and analyzing too much data can be a waste of resources. … [Read more...] about How much granularity is enough?
Explore three case studies which compare costs between inverters in commercial rooftop systems of varying sizes and three-phase voltages. Learn how the installer saved with HIQ inverters based on real … [Read more...] about How to save up to 7 cents/Watt in your next commercial solar project
Additional AC and DC disconnects add cost and complexity to PV systems and introduce several points of potential failure, thus reducing reliability. In the US disconnecting means are mandated by the … [Read more...] about Saving Install Cost by Using Connectors as Means of Disconnect
The ability of a PV inverter to detect and interrupt series arcs is a useful safety feature. In the US the National Electrical Code requires PV systems to be capable of detecting high voltage DC arcs. … [Read more...] about Taking the Nuisance Tripping out of AFCI – Useful Changes to Testing of PV Inverters