I saw on old thread concerning power showers in Brazil. Are you guys still around? I've got a few questions about electricity in Brazil:
Which systems are in use? 127V, 220V, Are there any more?
Are appliances made for the Brazilian market rated 127V? Is there any problem with using US 120V equipment with the 127V system? (Do you know the voltage tolerances?)
Is conversion to a common system in progress?
How are houses supplied? Single phase, 3-phase or two of the three phases? Is the US style center-tapped single phase used?
(I have no plans to visit Brazil, I'm just curious!)