ASHRAE is one of the main players when we talk about standars definito, their guides around power supply desing in the Datacenter are a must read.
The ANSI/ASHRAE Standard 90.4-2019, Energy Standard for Data Centers is one of the most important guides to follow if you want to achieve high rates of availability and efficiency in the Datacenter.
Since his arrival, the "Edge Computing"" has been growing deplying one location afeter other, without stop. The problem is ware locating Datacenter equipment (Servers, networking and so on) in facilities without the traditional Datacenters features, for that reasson ASHRAE has been developed a new bulletin to help us in the desgin of such sites.
Fourteen pages plenty of useful information that you can downloade from here .