jmlinder
Member
- Location
- Burlington, NJ, USA
I am being required by a Electrical Building Inspector to submit voltage drop calculations to support a permit application. The Inspector has stated that the calculations must include the voltage drop accross the 480/208 distribution transformers. It seems to me that the voltage drop of a 3.7% impedance transformer will always exceed the NEC guideline of 3% and when added to the remaining circuit voltage drops will exceed the 5%. My first thought was to raise the secondary voltage through tap settings but this would create a high voltage condition during times of small current draw. I would appeciate any other thoughts?