The FOLPS has written to IEC, BSI and to AFNOR seeking clarification on how we word our specifications. Some members quote NF C 17-102 as the only standard for ESE systems whilst others are quoting a hybrid system using IEC 62305 and NF C 17-102. There are manufacturers of ESE systems that quote both. The rules of CENELEC seem to state that there cannot be conflicting installation standards, and so, the NF C 17-102 underwent transformation in 2011 into a product standard that is now acceptable to CENELEC. At the same time, it is illogical to solely quote NF C 17-102 if it missing vital installation guidance. For guidance on installation, there is only one place to look – the IEC 62305 suite of standards. One thing that all members agree on – ESE systems are not part of BSEN 62305. So, what is the best way for us to be quoting and specifying ESE installations?