The easiest, low risk way to procure cables is to specify products that have proven their quality in similar projects. However, this may not always be possible as the end use may impose requirements that an established cable cannot meet.
If so, the next-best option is to insist that cables must meet relevant national or international standards, plus independent approval and certification requirements. By doing so, the onus of meeting the specification is placed upon the supplier.
A third option is to generate your own cable specification, which sounds efficient and attractive, but may have some pitfalls. This article discusses these alternatives and offers some useful guidelines for writing bespoke cable specifications.