Comm service secondary conductors/conduits here (NJ) are customer installed & owned. Customer also installs primary conduit/ducts & POCO installs and owns the primary side. PS territory, the EC makes the secondary terminations, supplies the lugs & hardware, at the padmount. Responsibilities vary by POCOs, and areas.
The Life-Safety issues can pose additional obstacles, which should be discussed with the local AHJs (Fire Marshal) As this is a new building that probably has fire sprinklers, does it have a fire pump?
Was any mention of the genset size?? Wish to run the whole 2500 amp existing service loads? If you tie-in the existing life-safety the gen becomes 'legally required' as opposed to 'optional'; if there is a Fire Pump, that's another obstacle. Were any preperations 'made' for a 'future generator'?? You mention it is only 4 months old! Definite PE/EE/Architect required.
No engineer or architect is required in this municipality. All they require is an inspection. I have already spoke with township and poco. (this is not PECO or PPL or MetED) I also met with a engineer for the poco, to meet me at the xfmr to open it it up for me to look at. I am though, considering getting an electrical engineer involved just for the liability.
The life Safety is something I had not considered. THanks for bringing it up.
As far as disconnecting secondaries from gear and back feeding with temp genny, that was my thought process as well. We will be trying to convince the owner this needs to be done next spring. No A/C or heat would be on.
