Currently Being ModeratedDec 11, 2012 9:35 PM (in response to annaesthetised)
The eMac's power supply must be switched to US by installing jumpers on the power supply and the line conditioning module, if one is installed.
This is best left to a professional. In the event you are one, here you go: http://tim.id.au/laptops/apple/emac/eMac.pdf
Currently Being ModeratedDec 12, 2012 2:48 AM (in response to John Galt)
All eMacs power supplies can detect input voltage from 100 to 220 Volt automatically. They are not customised for different countries. The OP need make no custom refit.
Currently Being ModeratedDec 12, 2012 7:07 AM (in response to roam)
All eMacs power supplies can detect input voltage from 100 to 220 Volt automatically.
I thought so too roam but then I checked the service manual linked above.
It is an unusual requirement for a Mac.MacBooks iMacs iPods AirPorts, OS X Mountain Lion, 27 years Apple!