A 5977C GC/MSD system is installed in our QC laboratory. The technical service claims that there is a <1 V requirement for neutral-to-ground voltage. But I can't find anywhere in Agilent documents this requirement, including Installation and Site Prep guides. I requested the relevant documents for this statement from them; I've yet to get an answer.
Is it really a "must"; or the service is playing it "safe" unnecessarily?