On Wednesday, July 26, 2017 at 3:51:02 PM UTC-4, Gareth Magennis wrote:


No,I thought as it is transformer and ground isolated it shouldn't matter.


Gareth.

If you have the typical "Hot-Neutral" configuration, it does - well - better stated, it can. It does not matter only with hot-hot configurations such as US 240V single-phase connections. Try reversing, and please let us know.

Peter Wieck
Melrose Park, PA