[Info-vax] VAXStation 3100

[Arne Vajhøj]

On 1/16/2019 5:29 PM, Bill Gunshannon wrote:
> On 1/16/19 4:48 PM, Arne Vajhøj wrote:
>> On 1/16/2019 3:41 PM, Bill Gunshannon wrote:
>>> But here's the new problem.  I plugged an Expansion box in
>>> the same outlet strip and connected them together. Kicks
>>> the GFCI breaker!!  Disconnect the SCSI between the two
>>> boxes.  As soon as I turn the second one on it kicks the
>>> GFCI.  Either one is OK by itself, but the two together
>>> kicks the GFCI.  Other than a wiring problem in the power
>>> supply (I assume it would take one of them having the white
>>> and black wires reversed in side the box) what else could
>>> cause them to kick a GFCI as opposed to a circuit breaker?
>>
>> I am not a hardware guy.
>>
>> But I had a printer that would always trip
>> GFCI.
>>
>> And I have read about other having same problem with
>> a printer or some times with a computer.
>>
>> Some say that a better quality GFCI will solve
>> the problem.
>>
>> I suspect that the easiest/cheapest solution will be
>> to use an UPS.
> 
> Actually, I just read something that said UPSes can trip
> GFCI breakers.  I fiddled with outlets here and have made
> the determination that the GFCI is either cheap, rated to
> small or just plain worn out.  It would not surprise me
> to find out that boxes this old have leakage to ground.
> And an excess of that would definitely trip a GFCI.

I have good experience with UPS in this regard.

One observation is obviously not much, but ...

Arne