Dear ช.คกทก.
For the item 2, please clarify what is the name plate of the inverter. You need a serial number or what you need exactly. Please be more specific so that I can help you get the information.
For the Item 3, please inform me the person that I need to contact to obtain the information since this is not in the scope of Engineering work.
I also would like to point out that Engineering team does not mind to support with the technical and other information related to Engineering work; however, the "Project" should be the one to prepare and process the work in order to obtain those permits.
Your understanding in this matter would be highly apprciaated.
Best Regards,