Sebolt Wire Company heats copper ingots to very high temperatures by placing the ingots in a large heat coil.
The heated ingots are then run through a shaping machine that shapes the soft ingot into wire
Due to the long heat-up time, the coil is never turned off.
When an ingot is placed in the coil, the temperature is raised to an even higher level, and then the coil is allowed to drop to the "waiting" temperature between ingots.
Management needs to know the variable cost of power