Thanks for the input. UK requirements are such that if a power circuit is protected by an earth leakage detection device (i.e RCD or RCBO), the maximum cumulative leakage current for equipment connected to this circuit must be calculated. I would like to get a feel for what typically could be expected when connecting computers to a circuit, hence the question.
Suggestion: Please, notice that the computers supposed to have two different grounds, namely, the equipment ground and isolated ground. The equipment ground can get contaminated with various waves, i.e. becomes "noisy" that is harmful to electronics.
Reference: IEEE Std 142-1991 IEEE Recommended Practice for Grounding of Industrial and Commercial Power Systems.
Chapter 5 Sensitive Electronic Equipment Grounding
Once again thank you for the comments. Obtaining any info on this from the PC manufacturers is difficult. I may have to physically measure it on several old and new PC's to obtain a range.
