Many fractional horse power (FHP) motor manufacturers, selling to the appliance, heating, ventilation and air conditioning equipment industries, are seriously evaluating a switch from copper to aluminium magnet wire. The economics of switching to aluminium are quite straightforward: copper magnet wire currently contributes up to 10% to the overall cost of a typical FHP electric motor. At current market prices, switching from copper to aluminium wire can potentially reduce this contribution to less than 2%.