glen1971 wrote:
Foreign equipment?? Don't know that I'd use that term... To find 600 volt in the oil and gas industry in Alberta (using it as an example as that is where I spend most of my time) would be rare... There are thousands of 480 volt installations province wide, both 3 phase and single phase..
I agree there are some whole plants running on 480V in Canada, but it's not the standard across all sectors. In manufacturing plants (where I spend most of my time), 600V is standard, with the odd 480V transformer for one or two machines. Of course, even then there are some exceptions, where plants using a lot of foreign equipments add a 480V distribution across the whole plant.
Here (Province of Quebec), the local utility only provides 600/347V or 240/120V for low voltage. If you want 480/277V, you must transform it yourself.