I’ve been asked to put a Type 1 EES (so with LS, Crit and Eq branches) for a very old facility serving as a dormitory for extremely disabled children some apparently dependent on power to stay alive. I don’t know the square footage of the building but less than 20K and it’s already been determined that all we need is an 80kW, 208Y.120V generator. I’m new to the job and so am lacking some of the history but I’m being told that a key person with the facility is insisting that we need three ATS’s. Obviously given that the EES system is comprised of a only 80kW genset, means that we ought to be able to do it with a single ATS. I’m just trying to anticipate what this person’s argument might be for insisting on 3. I’m particularly interested given how extremely tight space is in this building. Am I missing something?