Solar Panel - Event Date: 12 Feb 2020

MC4's are fine to be disconnected and reconnected but to meet the National Electric Code all solar module connectors must require a tool for removal. That is a safety requirement so that people can't go wandering out in a solar array and disconnect the modules by hand and electrocute themselves with 600 or 1000Vdc. They are NOT approved for load break, meaning that you need to disconnect the solar module/array somewhere else first so that there is no current flow when you disconnect the modules. Solar is always on when the sun is shining so there has to be another way to disconnect the module(s), otherwise you will draw an arc. Its not a big issue at 12Vdc but at 600Vdc I can assure you that it gets pretty interesting.