You are kidding me!

Neutral and Ground are basically one and the same. In many buildings all over the world (including in the US) the NEUTRAL incommer is tied to the Building GROUND (just as it is at the generating plant).

Go remove that fuse from the NEUTRAL line in figure 3 of TB008. Then stick your finger in the HOT terminal with one hand (or the 1uF Capacitor), and go grip a Water pipe in the other and tell me if you feel anything! They don't label that terminal LIVE for fun.

Oh, btw... I've a whole heap of US plugs and sockets that have the Neutral and Live EXACTLY the same size. So the Neutral terminal being the larger must be a recent innovation for the US.

The Transformerless Power Supply is not designed for portable equipment that can be connected either way around, but more suitable for fixed plant where the installer wires LIVE to LIVE.