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What are the three defined classes? Class 1 (General Electronic), Class 2 (Dedicated Service), and Class 3 (High Performance/Harsh Environment).

“A Class 3 wire harness has a solder connection to a terminal. The solder has a concave fillet with exposed visible wire strands beyond the fillet. Is this acceptable?” ipc whmaa620 test answers free

Stripping, tinning, and conductor damage. Pay close attention to how many nicked or broken strands are allowed per Class. What are the three defined classes