gotcha. I've never heard of 16amp service, in Canada we have 15 amp.
But its very common to have many 15amp and 240V lines run in a house in Canada.
My kitchen alone has 4 different lines. i don't think your scenario is all that uncommon given that almost all new builds will have the same lines run in their home.
The quotes are in since the difference between the phases is 230V, but in practice it is almost the same as a 40Ax400V single phase connection.