MC4 crimp torque
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MC4 Connector Overheating & Melting: 5 Causes and How to Fix Them
MC4 connector overheating and melting: the five common causes (loose crimp, wrong torque, mixed brands, over-current, poor contact) and how to fix each. MC4 (CE-marked) is a mature PV DC connector — safe only when assembled and rated correctly. HuaCable supplies CE-marked MC4.
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