@ Mikeywith, you do know that Frodo and other mods occasionally do their thing even in self-moderated threads. I'd just prefer they not have clear reason to do that. Mentioning the effects that alts have on BTC is one thing, detailed analyses is a whole different matter and that belongs in the General discussion, Economics, or other areas of the Forum. Not here..

@Phil, works for me. Good move and again, that should keep the Forum mods from meddling around here  

Please note that I have never deleted any post here and prefer to not. It's just that things were starting to drift over into what is specifically not allowed in this area of the Forum. "Thin edge of the wedge" and all...

edit: Hmm, I see that Frodo is no longer a mod... Interesting.

That's my call to make and I strongly disagree. When almost 1/2 of a post is about alts that's pushing it.

Only if you give them your private key(s). You cannot send anything from a wallet without them.

Good. Hopefully that will table further discussion of that crap coin.
I'd hate to have to start deleting posts because of excessive discussion of alts... 

Ya almost got the formatting right -- you need to use the #code tag instead of the quote tag. Using #code condenses text walls down to a much more manageable and readable scroll box.

As for the fans - just because the GUI says both are spinning does NOT mean both actually running and moving air. Usually the fan motor on hot side of a miner dies but airflow from the intake fan makes the dead fan blades spin and show up on the GUI as spinning. Unplug 1 fan at a time and briefly power up the miner, a good fan will almost immediately start up while a dead fan will not.

I agree with HagssFIN - avoid Strong U at all costs.
Please take a look at this Forum thread about Strong-U. While it specifically deals with their altcoin miner, I've seen other threads about their BTC miners that tell they are are just as bad.

Folks, if you just take a little time to read pinned messages here you will save yourself from asking ridiculous questions like that... As a bonus you might even learn a bit more faster.

Please ref https://bitcointalk.org/index.php?topic=2415854.0 mainly point-3 and the summary.

That wild leg is considered a potential safety hazard because folks adding new (120v) circuits to a panel that is fed in that way MUST pay close attention to which breaker slots in the panel are fed by it. Every 3rd slot is the wild leg.

For new construction or service upgrades most local codes will demand you to have two breaker panels: 1 main panel for the incoming service main breaker followed by high line (208-240v) 2-pole or 3-pole breakers in it for single or 3-phase loads, and a 2nd single-phase panel fed from a large breaker in the main panel.

The 2nd panel is only fed by L1, L2 and Neutral. This 2nd panel is for all single-phase 120/208V lighting and wall outlet power, breakers in it will be either 1-pole or 2-pole to respectively deliver either 120v from L1 or L2 referenced to Neutral or single phase 208-240v from across L1-L2. The driving point is that new circuits can be added to this panel at will with no regard to that wild leg.

The most common wye service connection from the utility's transformer eliminates any potential for incorrect wiring. Leg to leg will always be 208-240v and any leg to Neutral will always be 120V (208V phase voltage) up to 138V (if phase is 240V).

As for actual voltage supplied, that is a bit of a sticky issue... Most utilities want to give you 3-phase 208VAC (usually more like around 213V) vs 230-240 because with a 208V leg referenced to Neutral you will get 120VAC. Them supplying 230-240VAC splits down to around 132V up to just over 138V when referenced to Neutral, that of course is a no-go.

Is the higher phase-to-phase voltages better? Yes. As you said there is lower current pulled so less stress on the front side of PSU's. Plus, it gives you greater margin to keep running if there is a brown out where the line voltage drops though in the US the brown out margin rarely matters.

You're over-thinking things....
Unless you are pulling mega-watts of power, load balance on the utilities transmission lines is not your concern. If you have 3-phase power you only have to reasonably balance power from your distribution panel. If you have single-phase power it is still the utilities concern - not yours. Of course this also assumes that you are in a fairly well developed country with stable & modern power grids.

In most countries 3-phase is typically delivered to a building as a wye connection with a center Neutral connection - not delta. However, that also depends on the local power loads. Wild leg or high leg grounded delta is usually only found where most area loads are single phase and only a few select customers need 3-phase. Unless it is your only choice, due to the voltage imbalance between the wild leg and Neutral I do not recommend grounded delta.

What country is this in? How power is distributed varies between countries and even between regions within a country.
What voltage is your typical wall outlet at home or business? 110v or 220v?
ref https://en.wikipedia.org/wiki/Three-phase_electric_power

If you want 208-240v 3-phase power, and if the location also needs a lower voltage for wall plugs & lighting just tell the utility that. They will decide on the type of transformer used as it all depends on how they distribute power in the area where you are.

Sigh....
Please ref https://bitcointalk.org/index.php?topic=2415854.msg24714338#msg24714338
It would be a very very pointless enterprise.... Your share rate would be so incredibly low most pools would treat it as a dropped or offline connection 

I assume that "TDU" is your utility supplying power to the building?
If so, yes and no. Yes it is a load on only 1-phase of their (usually 3-phase) transmission lines BUT it is their job to monitor the lines and divvy up the loads on them between you and other customers so no it should not really be an issue for them.

If you are in North America, depending on what kind of power is needed for other businesses nearby, their '3-phase' may not exactly true 3-phase but rather 3-phase created by using a 'wild leg' as referenced to Neutral. Voltage across all 3 or any 2 lines is the same. Voltage from either L1 or L2 referenced to Neutral is balanced to 1/2 the L1-L2 voltage. For 208 VAC that is 110V for L1 or L2 to Neutral. Voltage on the 3rd or Wild leg referenced to Neutral is much because it is is NOT reference to Neutral. The 3rd leg is supplied only to places needing 3-phase to run motors, refrigeration, and other application requiring it that are powered by all three phases. If that is the case the utility is already supplying single phase power over very heavy lines feeding several other locations nearby.

Would they prefer a load split across all 3-phases? Sure, but it should make no difference in what you pay.

150kw is getting into 3-phase territory but still very practical for single phase service. It comes down to cost of the panel (size and amount of copper in it) and if the power company needs to supply you with a different service transformer to feed the building. As Mikey said, go with what is cheaper.

More to the point since they probably will not read past the 1st line or 2,  https://bitcointalk.org/index.php?topic=2415854.msg24714338#msg24714338 bullet#3

The answer is right in front of you: If it immediately affected all miners one would notice it and then take immediate action to remove the malware. By waiting a few days/weeks before re-directing your hash the malware is free to spread to other miners.

You should apply the SD process on ALL of your Bitmain miners to clean them up.

Exactly.
Look at it this way - a miner is ran by a small built-in PC that uses flash memory as a drive holding the operating system and miner software.

Would you buy a used PC and put it on a network without first wiping the drives and installing fresh copy of the OS? I hope to God your answer is a resounding: "HELL NO -- intentionally or not, who knows what malware has been loaded onto it!"

Same logic to wipe all storage and re-install fresh OS & programs applies here.

Short answer: NO

Accelerator sites are ran by pools with thousands of miners behind them. They work by including requested transactions in new blocks they work on. Given a large enough pool that gives a good chance of your stuck/slow tx to be processed quickly.

A single miner, hell even enough miners to give 10PH, have a very very very low chance of finding a block -- far too low of a chance to be a successful solo operation much less one able to accelerate Tx's.

"Happen to it"?
As I said, what you describe, L1-N-L2 is how power is fed to a house in NA and Ground is tied to the neutral at the incoming power junction. Appliances that use 220v just use L1 & L1 with ground so aside from it working, nothing will 'happen' to it.

That is exactly how power in North America works. Here Neutral is only for making the 110v circuits.

Value Added Tax. The amount of VAT all depends on which non-US country you live in. The USA only has the Trump Tariff.

Then check what Blokforge.com has in stock. They are in Mesa Arizona (even have walk-in a store there) and primarily carry new gear but have some used gear  from time-to-time. I've used them since 2017 for all of my new gear purchases (primarily Avalons) and they are excellent folks to work with.