Secondary only two legs are loaded third not loaded. Thats single phase not three phase. How can one calculate three phase fla secondary given above situation?480V 50kVA 3 phase transformer nominal current is 60A.
208V nominal current is 139A.
100A primary OCPD is 166% and is acceptable if secondary OCPD is 125%.
Secondary OCPD would need to be 175A to be kosher.
Sent from my iPhone using Tapatalk