To get all my switchgear and transformers in compliance with NFPA 70 (NEC 110.16) as far as getting labels indicating arc flash hazards and giving appropriate PPE levels, what is the formula for calculating fault current - at the main and at subsequent sub-panels? Also, can I calculate fault current for my pad mount transformers (12470/480)? I believe the impedenace (Z%) is on the transformer label. Thanks, Jimi
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Fault Current
- Thread starter jimioy
- Start date