In exceptional cases, where technology is expected to develop more rapidly, no products should fall within the top two classes at the moment of introduction of the newly rescaled label.
I gcásanna eisceachtúla, nuair atáthar ag súil le forbairt theicneolaíoch níos gasta, níor cheart go mbeadh táirgí ag teacht faoi réim an dá ardaicme tráth a dtabharfar an lipéad nua-athscálaithe isteach.