NOT KNOWN DETAILS ABOUT SOLAR COMBINER HARNESS SUPPLIER

The MC4 solar connector created in 2004 is undoubtedly an enhanced Edition with the MC3 connector, featuring a 4mm2 contact pin, an efficient safety system, plus a functional installation that turned it into a typical during the solar sector. it is a dumb dilemma but I’m not solar panel savvy. What do the rubber plugs at the conclusion of sol