Electrical equipment must carry the CE marking, PAT tested and carry a current certificate from a National Inspection Council for Electrical Installation Contracting (NICEIC) registered contractor.
Rhaid i'r holl offer trydanol fod â marc CE, rhaid bod profion teclynnau cludadwy (PAT) wedi'u cynnal arnynt a rhaid bod ganddynt Dystysgrif Gyfredol gan Gontractwr Cofrestredig NICEIC.