AYou need to ensure that the MC4 connector is compatible with the specifications of your solar panels and inverter. The voltage and current ratings of the MC4 connector should match or exceed the requirements of your system.
ADepending on your actual needs, the application location, and the wiring range, you can choose a T or Y waterproof connector.
AThe first step in selecting a waterproof connector is understanding Ingress Protection (IP) ratings. These ratings indicate the connector's resistance to dust and moisture. A higher IP rating signifies greater protection.
AThe pin size is the outer diameter of the connector and its inner diameter. The outer diameter is 5.5mm while the inner diameter is 2.5mm. To find out the exact connector size, measure the center pin and the inner diameter of the port. Then, compare the sizes to determine which type of adapter you need to buy.
AMost waterproof connectors are rated either IP67 or IP68, which means they are dust-tight and protected against 30 minutes of submersion in water at either 1 m or 1.5 m, respectively.
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