I have a project where we show a 225KVA 480Vpri/120/208 3p 4w sec transformer on the 4th floor penthouse. I have a note on the documents stating to ground the transformer per the NEC and coordinate with the local AHJ.
The AHJ will not make the call as to how to ground the transformer. The building is concrete, no structural steel, no water piping nearby on the 4th floor.
What are my options to ground this transformer? I do not see any economical options here other than providing a GEC back to the main building service GEC.
The AHJ will not make the call as to how to ground the transformer. The building is concrete, no structural steel, no water piping nearby on the 4th floor.
What are my options to ground this transformer? I do not see any economical options here other than providing a GEC back to the main building service GEC.