Oh God, your country is wired with Stab-Loc? You might as well save time and set fire to your house :-)
For the un-initiated, Stab Loc was a maker of circuit breakers that.... well wouldn't break. Under load they had a tendancy to do one of two things:
1) Warp the contacts so that resistance increased as load increased, causing heat and a fire in the fuse box
2) Fuse shorted under overload (or even load) so that when a short was detected the breaker would ensure that the full 100-200ams of the house service could be dumped into the load, causing fires in walls, appliances, everywhere.
For awhile people thought that cycling the breakers every once in awhile would fix the problem, but then it was discovered that each time you cycled it you would make event 1 more likely. In other words having them open under load was a literal crap-shoot.
In terms of 30a 120v, that is very unusual in the US, it requires 10-8 gauge wire minimum and I could see a 120/240 unit melting its input lines under the extra current it tries to draw (do Antminer PSUs have a fuse in them?). Am curious to see what kind of power the OP has, and will test my icoming S15 with the Watts-Up meter to see what it does on 120v.
(Edit: I see Schindler Electric is selling new breakers that might fit in a Stab-Loc panel. Interesting)
Yes that's the one, thanks. And lets not forget, the panel breaker box itself is... How should i say, "flexible"? Imagine you attach something from one side and not the other, any little pressure would make the thing flex (inwards) in the "floating" side, and the whole side bends so when you try to use a switch in one of the breakers it might accidentally move the others in the same column. If you move it vertically too much, it can also get stuck against the metal front cover...
The dual breakers (two phase) are not connected inside like the decent breakers do, they are literally just two singles next to each other tied with some metal thingie on top of the levers. if one trips the other should pull the other lever also, but they are only connected at the lever part, and i found that this can actually make both stuck (hard) in the on position not halting any current at all so i removed that metal thingie and rather risk breaking a single phase than none. The way that would happen is if only one trips, the metal thing might get diagonal and have both stuck before reaching the middle (break) position
I doubt everyone has these, but this is a building from the 70ies. I have seen others with more decent material. The only saving grace is that the master breaker (which is not in the same box but separate) is not Federal Pacific or the Stab-Loc system. In fact the last short circuit i remember triggered that one, not any of the useless Stab-Loc ones in the box which serves more like decoration...
it is something that under normal circumstances, you would just replace entirely... But when you "survive" in a broken economy, things not food or bills get simply neglected. This building hasn't caught fire in over 40 years, i just pray...
And truth be told i only learned about it when i started messing with bitcoin mining and wondered why this box seemed so cheaply built, then i learned about it online from some old document wrote in the 80ies.
But yeah its not the first time they send the "garbage" here. Do you still have analog tvs? this country still broadcasts NTSC (yes its Nov 2019). There are even still plenty of CRTs humming along, we have two here still getting daily use... If they break, that's the end unless it can be
cheaply repaired.
