Multiple miners on one host, on different circuits, ground loop?

[Flashman]

Hey folks,

I've been wondering if there's a solution to the problems of potential ground loop issues when you have ASIC miners plugged to a different circuit than the host device, or multiple different circuits.

Now I've only heard of this in the past when people have been plugging a monitor or printer into a different circuit and the ground loop through the interface cable causes erratic behaviour, even burns out parts on occasion.

Now, having a slight clue, I would check for DC or AC potential differences between the ground shields before actually connecting them.

This could also happen I guess in situations where you use multiple PSUs on one mining rig, such as in a BFL minirig or in a honkingly huge GPU rig, but the ground bonding between them should be a lot better, not being the shield of the USB cable.

Any thoughts?


Flash

[HellDiverUK]

All your grounds in your house should be tied together.  If you're getting ground loops, then you need an electrician.

[Flashman]

True True.

But I thunk there can be instances where you get issues, just because of the length of one circuit vs another, or the millivolt drops on 10 mechanical splices vs 4 etc... maybe a volt you'd never notice until it screws up sensitive equipment.