The maintenance cost for the electrical equipment is called.

SOLUTION

The cost of lubricating oil, maintenance, and repairs with running charges of electrical equipment is called Operating cost or running cost of the electrical equipment.

Extensive usage of electrical equipment takes its toll over time. It undergoes wear and tear and hence requires maintenance, repair, and replacement. Hence, over time, the value of the power plant equipment, as well as the building, decreases. This decrease in value is termed as 'depreciation'.