An interesting topic. It is always difficult to comment on the practices allowed from one country to another when electrical regulations vary so much. I am from the UK and I know live in Canada I am a licenced professional engineer in both countries and both countries are very different in what they allow - with good reasons that reflect practice and also history of how power genmeration and distribution has evolved. Not surprisingly Canada shares many similarities to the US - but not all US practice applies in Canada. In fact not all Canadian practice applies in all Canadian provinces. However all countries have one thing in common: the regulations are becoming increasingly more stringent as we seek to protect people from the inherent danger of electricity.
Just a long winded way of saying just because something doesn't match how we normally do it - doesn't make it wrong but it is definitely interesting.
Just a long winded way of saying just because something doesn't match how we normally do it - doesn't make it wrong but it is definitely interesting.