A little out of my area of expertise, but I'll offer my $.02...
The fact that your equipment mounts in a metal rack may be a clue...
If it's metal case screwed into place on a metal rack (bonded, as sorts), then I would think there may be an "equipment ground" terminal on the rack itself to connect to a grounding point.
But if all of the equipment is insulated, and each is provided with it's own grounding means ("grounded" / "3-prong" plug), then additional grounding should be unnecessary, IMHO
Of course, what if the metal cases for the equipment are also grounded - would these effectively ground the rack as well?
Does any of the literature that comes with your equipment discuss grounding? You may want to consult the manufacturer for additional info...
DougW, (mimicking the RCA Victor dog) staring perplexedly at the technology...
