Hi. I live in NZ and here we have entirely different plugs for 10A and 15A circuits, so if you dont have a dedicated 15A circuit, you have to get one specifically wired in for anything that requires one. Ive noticed a lot of new 3hp machines (eg): [url=http://www.machineryhouse.co.nz/W450]W450 | ST-250 Table Saw | machineryhouse.co.nz[/url] require 15A circuits, despite having current draw which could theoretically be managed on a 10A (2200W, on a 240v circuit). i realise i couldnt run anything else on a 10A circuit with this machine on, but since i only ever have one machine running at a time, why not?! Anyone know why manufacturers are limiting the use of their products in this way, when it seems more ideal than absolutely necessary? Or am i missing something here?

I had the exact same thing! [url]http://www.doityourself.com/forum/electrical-ac-dc/515081-breaker-box-buzzing.html#post2228215[/url] My breaker for the furnace was buzzing, the furnace was not running so I flipped the switch - no more buzz. Then a few days later the buzz was so loud it woke me up!! (panel is in my walk-in closet). Since the furnace was running this time I just pushed hard on the breaker and it quit......that was about a week ago - no more buzzing since. My furnace has taken a beating this winter (brrrrr it's cold in SC) so I thought the breaker and furnace didn't know what the heck was going on since in a normal winter we rarely run the furnace all winter. Serious note, I am concerned about it - should I have a electrician look at it?