US connectors with 220/240v

Yes, the standard of the US plugs and sockets is generally high and if you are using say hospital grade stuff it will pass the tests used in 230V countries, though may be technically illegal. So your insurance could be useless if you burn your house down. BUT, some US power cords are dangerous to use in 230V countries as some cables used in US power cords are rated too low to be safe (eg at 300V). You should ask the manufacturer for the voltage rating and only use cables rated at 500V and above IMO.

Redkiwi, is US PC tht rated at 300v very common in highend PC? thanks for the info. will be caution in the future.

I have come across a few when enquiring of the manufacturers of the PCs I was looking at. I ended up with vhaudio airsine because Chris was very credible in his statements about voltage ratings (and they are very nice cables too). Some said 'no way should you use our cables on 230V'.

I'm using VH Audio Airsine and Shunyata Anaconda Helix Alpha both with US 3-prong on 230V. I've also used MIT Oracle AC2 US 3-prong and they are in fact specifically rated for up to 240V operation iirc (it's marked on the red paper ring around the male lead).