Four transformers, three voltage levels and eighteen line bays — and what all of it is for on the day something goes out of service.
Our lead explains why one substation in Kwara operates at three different voltages at once — and why a network built on only one of them would not work at all.
The Brief
Editor’s Picks
Notes from the field
An occasional letter on the engineering behind the projects we cover — what a piece of equipment actually does, and why a network is built the way it is. No schedule it cannot keep.