I am testing in a venue which has a number of equipment racks with Audio/Visual equipment. There are around 40 pieces of equipment, most of which have their own power cord, along with a number of 4 or 6 way mains distributors. All powered via a mains conditioning unit from a 16A plug. There is access to the back but it is not easy at all and the cables are all bundled together.
Each rack includes Class I, Class II equipment as well as some low voltage gear powered by plug in transformers.
I can't decide if I should test the entire installation as one (and how as I suspect the cumulative leakages would merit a fail), or test each piece of equipment individually?
Although the installation is fixed, equipment is removed and reinstalled occasionally to be used in other locations.