A room air conditioner's efficiency is measured by the energy efficiency ratio (EER). The EER isthe ratio of the cooling capacity (in British thermal units [Btu] per hour) to the power input (in watts). The higher the EER rating, the more efficient the air conditioner. What is EER an...
The cooling system, air-cooled or oil-cooled, is also used to determine the ampacity of the transformer. Unless indicated otherwise, transformers are rated for a load factor of 100%. The current flowing through the unit will generate heat ((I^2)R), that must be dissipated. For an oil f...