Epoxy Coating vs Mylar Tape for 800A/1000A Busbar Insulation in University Labs

Hello!I am working as an Electrical Engineer, and we are constructing an Academic engineering block of University, it has many electrical and power labs with offices and classrooms. It has the main 3 conducting busbars with a supply of 800A, 1000A, and 1000A. My question is that what will you prefer for insulating material either epoxy coat or mylar tapes between the conducting busbars? our approved item is epoxy coating but vendor promoting mylar type. If someone can share their experience/knowledge on this, it will be helpful for us to decide and make a proper decision. 
Here are some links which distinguish its properties and benefits of epoxy over mylar.https://solepoxy.com/Tools/Broadcaster/frontend/itemcontent.asp?reset=1&lngDisplay=7&ItemID=2058https://download.schneider-electric.com/files?p_enDocType=Data+Bulletin&p_File_Name=5600DB1501.pdf&p_Doc_Ref=5600DB1501
The following link illustrates the UL class B (130C) of Epoxy material.
https://www.theaemt.com/technical-info/genera...ineering/classification-of-insulation-systems


The following link is about Engineering Forum, discussion on Mylar, and Epoxy for industrial usage. It also gave the link of the IEEE paper about failures of the polyester spacer (Mylar) at low voltage equipment. He also gave a summary of the Arak Refinery plant of Iran that confronted a number of failures of low voltage equipment.
https://www.eng-tips.com/viewthread.cfm?qid=225989
After our comparison and research, the vendor also submitted its technical rebuttal report on mylar and epoxy electrical properties which are as under as attached files.

Hi Abdul,I am familiar with both types of insulation. From a design engineer perspective the epoxy type is by far the best option. Superior in every way to mylar, heat disapation, virtually no effects from aging and resistant to moisture.From an install/ manufacturing point of view, i.e. your vendor, the epoxy resin is a real pain. First all of the busbars would need to be cut, bent and punched to suit the switchboard, then they have to be coated and baked. And all of this has to most likely be done by an external supplier to your vendor which is why they are promoting mylar. More expensive for them to supply to you and more time consuming to build the final product. It is much easier and cheaper to do all the bus work in house and insulate using mylar. Stick to epoxy, your approved item, it will be a far superior product in the end.

Hi Alan,Thank you for your technical response. Now it's clear and we will stand on our statement for promoting the epoxy coating on busbars for all kinds of safety.Regards,Abdul Rafay

Hi Abdul,
I am also working as an Electrical Engineer. Copper oxidizes over time, and without coating, more power is needed to push electricity along the surface. We have constructed a library block of the company building that provides apa style papers for the students online, but had to have many electrical power labs with offices; https://paperell.com/apa-style-papers . We chose to you prefer epoxy coat coating on busbars for safety reasons too. Also, the powder coating is a popular choice for insulating thick conductors and conductors with multiple electrical contact points.

The following link is about Engineering Forum, discussion on Mylar, and Epoxy for industrial usage.

Thank you for the link, by the way.

Hi Abdul,

I am familiar with both types of insulation.