[quote=“wasim625, post:29, topic:22022”]
So whats up with the solar panel installers cutting the MC4 connectors from the panels. Is this OK to do that? Any problems faced cutting them? I also heard cutting that mc4 connector also voids the warranty of the panel sheets. They are also using AC wires where as the power from the panels is DC. is it oka to do that?
Mostly, these installers don’t have proper connectors, adapters and crimping tools so they do jugaars. It is definitely not OK. Any legitimately professional installer shouldn’t need to cut the connectors off but here, ‘sub chalta hai!’ mentality prevails. IIRC, all these connectors, when properly engaged are watertight and so safe from oxidation/degradation due to environmental effects.
Wire is wire, varying in strand count, gauge, etc. Regarding use of wiring typically used for AC voltage, it depends on the current rating, length of wire used and wire flexibility required. It can work in limited cases but isn’t generally advised.