Bob, An IEC standard must be equally applicable to products that are evaluated by a first (the manufacturer/supplier), second (the end purchaser) or third (independent) party. It would therefore be inappropriate for IEC 950 to include any requirement about agency markings in clause 1.7, or anywhere else.
A few years ago now it was necessary to update clause 1.5 to replace 'certified to' with 'demonstrated to comply with' (the words 'quoted' may not be exact since they come from my fallible memory). Third party markings, such as approval marks, are owned and controlled by the approval body in question (e.g. UL, CSA, BSI, TUeV and a host of others I've just offended by not mentioning them). The particular 'requirements' regarding what marks need to be applied to products, which can be applied to packaging etc. often vary in detail between approval bodies and depend on whether the item being 'approved' is a component (and what type) or equipment. Perhaps if you could be more specific in your question then others could be more specific in their answers. Richard Hughes
