You just tell me about the electrical work, I will prepare you the entire BOQ involved in that work including switchboards, Distribution Panels, Motor Control Centers and power cables. I will mention you the complete list of components making the switchboard e.g. breakers, contactors, relays, bus bars, metering instruments, and accessories.
I will list you all involved costs for your tender, for example, transportation, installation, testing and commissioning. I will mention you the manpower required for different activities, their durations, tools required for various jobs . . .