im_alan_partridge said:
Cheers Floyd
Btw, are US and Canadian plugs differant? My Lasonic from the US has two pin but one is a little bit bigger than the other so it can only plug in one way, this boxes cable has two pins but both exactly the same size so it fits fits in my 240 110 step down either way? im a little scared to plug it in so im running on cool DC
US and Canadian plugs are exactly the same. You are taliking about polarized versus non polarized plugs. On a polarized plug the wide blade is earthed, the narrow one is "hot". Inside some applicances, such as a lamp, you want the threaded part of the light bulb connected to earth, and the little button on the middle connected to hot, so you don't shock yourself by accident if you happen to come into contact with the screw
If an appliance doesn't have a wide and a narrow blade on the plug, it means polarity isn't relevant to safety. Your boombox likely has a permanently energized mains transformer, and power is switched on the seconday side - so it's not relevant which side of the primary winding is earthed. So using that plug with your step down transformer is not an issue.
What does matter however is mains frequency. Britain has 50Hz power, which requires a power transformer with a heavier iron core than north american 60 Hz power. Operating 60Hz equipment on 50 Hz will probably be okay, but if it's especially cheaply made, and the parts have marginal tolerances, then you could over heat the power trransformer. Read the label on the back of the boombox -, if it says 50/60Hz, then it's a green light to use the step down transformer. If it says only 60Hz, you may want to look into either replacing the mains transformer with one rated for 50Hz, using a 60Hz inverter, or a DC power supply.