ard(a)p850ug1.demon.co.uk (Tony Duell) wrote:
Another way, which should be safe, but which for some
odd reason is
against the US electrical code is to connect the 220V unit to a 220V US
outlet - the sort of thing you plug an air conditioner or whatever into.
I'm just guessing, but maybe the reason it's against code is that they
assume that European 220V equipment will be wired for one side of the
line being neutral, whereas a 220V outlet here in the US has both sides
hot.
If it's properly grounded equipment, this shouldn't matter. But if it's
ungrounded equipment, it could be a safety hazard.