With the advent of lots of remote lighting drivers and never knowing where another sparks may of hidden them or what make type they are, its getting very difficult to carry out an IR test without the prospect of killing something. This is a particular issue on high end houses or even mid range installs for that matter. Not all manufacturers allow 500v or even 250v happily on their drivers, especially if they have been built for 230v +10% 253v. 250v is too close to top end and I have lost drivers where test was needed. I always carry out a functional test prior to testing to make sure everything works before hand as sorting existing fixes can get very costly quickly. My reasoning with the Fluke 1664FC is that it is currently unique in carrying out a pretest first, i'm sure Megger will catch up and bring it out in a future version. If the pretest function works as documented then happy days. I was hoping someone here may have had experiences of the unit with a positive feedback.
