mknox
Well-Known Member
Is Canada kind of unique in being this stringent? Or will Tesla have had to face similar issues in other countries?
If my suspicion is correct, it is likely a metering thing. Canada is different than the US in that we have a federal agency (Measurement Canada) that is responsible for all metrology. Everything from gasoline pumps to the butcher's scale to electricity. Canadian utilities can only use meters that are approved and sealed by Measurement Canada whereas in the US, it is up to the utility to ensure metering accuracy. Since 277/480 is not a standard voltage in Canada, there are likely no meters approved for use. There are plenty that would work just fine, but it would be against federal law to do so.
That's not to say Tesla couldn't take utility power at 347/600 volts and step it down with a transformer on "their" side of the meter but it adds costs and complexities to the installation.