diamonddean
Member
- Location
- Oak Ridge TN
Background
We have a 150KVA pad mounted utility transformer (12470/480V) to feed a building.
During construction, contractor inadvertantly connected building nuetral to Phase C of Transformer. The only load connected at the time was a small construction panel and a couple HVAC units. When the 480V AC units wouldn't run, troubleshooting discovered the problem.
Question: Shouldn't a transformer primary fuse (15A Expulsion link and 80A current limiting) have blown when they energized the Xfmr? If not then what is the potential for someone getting a shock?
Thanks
We have a 150KVA pad mounted utility transformer (12470/480V) to feed a building.
During construction, contractor inadvertantly connected building nuetral to Phase C of Transformer. The only load connected at the time was a small construction panel and a couple HVAC units. When the 480V AC units wouldn't run, troubleshooting discovered the problem.
Question: Shouldn't a transformer primary fuse (15A Expulsion link and 80A current limiting) have blown when they energized the Xfmr? If not then what is the potential for someone getting a shock?
Thanks