22M is also what I get, seems like that wouldn't do much.
We need a well lit overview of the whole thing though. Looks to me like the receptacles are all grounded to chassis. I'd test this with a multimeter between receptacle grounds and IEC inlet, ground should be straight through with very little resistance.
I'd expect results to vary a lot, the trafos are small and 2A capacity could be a problem with many components.
Looks to me like the receptacles are all grounded to chassis. I'd test this with a multimeter between receptacle grounds and IEC inlet, ground should be straight through with very little resistance.
I agree. The power cord equipment grounding conductor connects to the grounding stud, seen in the picture/s, and from that stud individual green equipment ground wires run to and connect to the IG (Isolate Ground) equipment ground terminal screw on each IG ground Hubbell 15 amp single receptacle.
The unit, as is, should protect the user from any electrical shock hazard in the event of a Hot to chassis fault. Not only the power conditioner metal chassis but also the chassis of any equipment fed from the power conditioner, that uses the safety equipment ground, in the event either of the two secondary hot conductors were to come into contact with the metal chassis. Basically such a fault would make the fault of the wire contacting the chassis a grounded conductor. It could end up being the conductor feeding the safety fuse in a piece of audio equipment though.
Because the unit operates with 4 individual 120Vac floating power supplies I would not change any interconnects between audio equipment with any of the 4 power iso transformers energized. If more than one, or all energized, then the OP could receive an electrical shock. Bad enough one transformer's secondary is floating above ground. This has four 120Vac power supplies floating above ground. Definitely never use a ground cheater to lift the ground on a piece of equipment fed from the unit.
Do you see a problem with removing the two 22m ohm resistors from each receptacle outlet and installing a bonding jumper from the neutral terminal on each receptacle to the equipment ground on each receptacle? This will ground the secondary lead that is connected to the neutral contact on the receptacle making it the "grounded conductor", the neutral conductor.
From neutral contact to Hot contact 120Vac nominal. Still the same.
From the Hot contact to the equipment ground contact, it will measure 120Vac nominal.
From the neutral contact to the equipment ground contact, zero Vac.
Resistance, continuity, check from the neutral contact to the equipment ground contact will measure OL, short.
The OP's polarity/ground circuit checker will indicate Correct
when he checks each outlet.
The OP will need to check to make sure all 4 receptacles, transformers secondaries, are in phase with each other. In other wards from any hot to hot contact combination the voltage will measure zero volts nominal. If one or more reads 240Vac he will need to reverse the power leads feeding the odd receptacle/s. I would do this with all the "phase" rocker switches in the normal same position.
So what do you think? Worth the effort? The OP should be able to make the changes himself. An hour at the most, probably less.
As for the 2 amp max rating of each of the 4 transformers I just assumed the OP was aware of the fact.