Aleman
Senior Member
- Location
- Southern Ca, USA
Found an oddball power installation and am not sure of the code legalities. I have a 400A breaker from the main (2000A) feeding a 480Y panel protected by a 600A breaker. Conduit and cables are sized correctly for the 400. The 600A panel has a 400A breaker feeding a transformer that supplies a 208Y panel protected by a 800A breaker. All cables are sized for the upstream protection. Best we can determine is that the intent was to upgrade the feed to the 480 panel at some point. Seems screwy to me but not sure if there is an actual violation. As is, the power demand will not exceed the 400A supplied from the main. The loads are primarily HVAC and lighting. Any thoughts on this?