I'm doing work on a high end custom home for a architectural firm. This project has been in planning for the last 2 years. They had originally spec'd the service for 3 phase until the power company informed them they would not provide 3 phase to a residence. I suspect the panel schedule they provided was meant for the 3 phase system.
When I tried to obtain a quote from my Vendor for a Siemans Panel (see specs below) they said it exceeded the 10% rule and that they would not be able to provide the panel. Has anyone ever heard of this rule before? I did find in 408.13 (b) (2002 NEC) a rule regarding panel board protection.... Not sure if this is what they were referring to. Any feedback or guidance would be appreciated.
800 AMP Panel, 60 Spaces, Single Phase 120/240v, 42 KAIC
Circuit Details:
24 - 20AMP Single Poles
1 - 30AMP Double Pole
1 - 200AMP Double Pole (sub Panel)
1 - 225AMP Double Pole (Sub Panel)
1 - 100AMP Double Pole (Sub Panel)
1 - 400 AMP Double Pole (ATS for Generator)
2 - 80 AMP Double Poles
1 - 60 AMP Sauna
