{"product_id":"renogy-solar-mc4y2-branch-connectors-mmfffm-pair","title":"3 to 1 Solar Branch Connectors MMMF+FFFM Pair","description":"\u003cp\u003e\u003cstrong\u003eBranch connectors for three panels in parallel.\u003c\/strong\u003e One MMMF and one FFFM, with a rivet-and-lock design that assembles and comes apart without tools.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree panels into one\u003c\/strong\u003e pair of leads\u003c\/li\u003e\n\u003cli\u003eSupplied as a pair: one \u003cstrong\u003eMMMF\u003c\/strong\u003e and one \u003cstrong\u003eFFFM\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh ageing resistance and UV endurance\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eRivet and lock connection — no tools needed\u003c\/li\u003e\n\u003cli\u003eWeatherproof for harsh environments\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThree panels is where fusing starts to matter\u003c\/h3\u003e\u003cp\u003eWith three or more panels in parallel, a fault in one panel can be back-fed by the other two, and a panel's internal wiring is not rated to carry that. This is the point at which an in-line fuse per string stops being optional. Size each to the panel's maximum series fuse rating — typically 15A on 100W and 175W modules.\u003c\/p\u003e\u003ch3\u003eCurrent adds up quickly\u003c\/h3\u003e\u003cp\u003eThree 200W panels in parallel is roughly 19A down a single roof cable. That needs 6mm² at minimum over a typical run, and a controller rated to take it. If the numbers are getting uncomfortable, a series or series-parallel arrangement with a higher-voltage MPPT controller is the better engineering answer.\u003c\/p\u003e\u003ch3\u003eBefore you order\u003c\/h3\u003e\u003cp\u003eNo tools for assembly is genuinely useful on a roof. Push until each connector clicks — a partially mated solar connector will still pass current and will let water in.\u003c\/p\u003e","brand":"Renogy","offers":[{"title":"Default Title","offer_id":51358100521127,"sku":"RNG-CNCT-MC4Y-M-UK","price":14.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0770\/1158\/3143\/files\/20181228_095036_e1__30434.1561169370.1280.1280.jpg?v=1789801129","url":"https:\/\/shop.roamwired.com\/products\/renogy-solar-mc4y2-branch-connectors-mmfffm-pair","provider":"Roam Wired Shop","version":"1.0","type":"link"}