Not one of my fields, but .....

ENMAX Power Corporation operates 40 high voltage electrical substations and three lower voltage distribution substations.

The purpose of a substation is to 'step down' high voltage electricity from the transmission system to lower voltage electricity so it can be easily supplied to homes and businesses through our distribution lines.
https://www.enmax.com/generation-wires/transmission-and-dist...

The Distribution Board, refers to an equipment which consists of bus bars, and possible switches, fuse links and Automatic protective equipment, bypass equipment, for connecting, controlling and protecting a number of branch circuits fed from one main circuit of a wiring installation in a building or premises for easy and safe handling of incoming power supply.
http://laghu-udyog.gov.in/publications/pmryprof/electrical/c...