Are these drops possibly due to Power Company changeover from one transformer to another? In one of my locations,  I'm pulling 3MW off a residential substation, but I'm the only "commercial entity" drawing from that portion of the grid, I've been lucky to have very steady supply flow on the power company side. I know some residential grids can have decent size variances on their supply side. In my other location I'm pulling 4 MW's off the HV lines at through a 3500 KVA Transformer to 480V and stepping it down into containers to 3 phase 208. So far I've had very good results in my container build outs. 480V down to 208V into 10 gauge runs on 400 amp panels loaded with 30 amp breakers. Very stable so far.

I am currently running several S17 56TH on 208V. I have randomly Amp Clamped over 20 of them at the lead wire coming from the Breaker. These units are pulling consistently 12 Amps. We all used to easily get away with using 12 gauge wire, particularly in our receptacle;e pigtails. ( so much easier to make them up ) I am rethinking this part of my grid build outs now. These new units are consistently into the double digit amperage's. I believe that 12 gauge COPPER wire can support these loads but due to the constant draw aspect of our game, it's a bit of a game of Russian Roulette as to when your wires heat up, and melt their clothing. IMHO, it's not worth the risk to save some sore fingers from twisting 10g to 10g during rig ups. 2 S17's on one 30amp Breaker gets you right at 24amps +/-. Perfectly at the 80% threshold. Run that on 10 gauge and you'll avoid that awful smell of burning electrical components. Oh....and also burning buildings.  ( side note; When I amp clamp th T17 38 th they always come in under 10 amps. Again, running 3ph, 208V )

Yes, you can expect the S9 to go by the way of the L3+.That is by design. I also hope the OP is aware that his KWH Rate is NOT the important part of his calculations. When i see him post that he pays ".039" I immediately wonder if he is looking at just his rate per kwh. There are a lot of other charges that come into play. ( Fuel, Delivery, taxes etc etc.) If he is not at least a decent sized commercial miner I highly doubt his "all in rate" is .039 per kwh.

You are absolutely correct! Almost an exact clone of the main site. I have them up now side by side. Unbelievable. Here's the pirate site. h**ps://bitmain-store[dot]org/shop/00020180710164901333EGb4bPcY0681aa.html

They also ONLY accept LTC, BCH, BTC while stating they take USD wire transfer. Biggest clue overall is that you are buying an APW7 PSU along with the "unit". Even though te new units have their own built in. Thanks for the heads up!

Bitmain just released 64 Th at 2200 watts shipped in 3 days after payment. Once again, Bitmain is on a major cash grab. Diff jumps are going vertical. By today's metrics this offering gets you ROI by halvening. But...no way that holds. These will be 16 months minimum ROI. Bitmain is at it again. wait for newbs to go broke, then by their gear. That's what I've done the last three cycles. NEVER buy these hype/cycle peaks. People laughed when I predicted that you could buy S9I 14 th for $200.00. I bought 100's of them from $369.00 down to $225.00. My new prediction....wait and buy S17's for $500.00 new in the box post halvening. You heard it here first. $10,000,00 BTC will be the new $3,000.00 BTC.

Exactly. Not to mention the time tested forum approach of providing pictures of the gear with a current date sign, with user name in the photo. Also the price of the unit and willingness to use trusted forum escrow. Unfortunately these days more listings in here than not, are scam attempts. Granted they are thinly veiled and weak, but they must be working on some unsuspecting people or these scammers wouldn't keep doing it. I applaud you pointing it out. Not really worried about hurt feelings. This forum is, was and always will be, a better option for buying and selling gear than Ebay or dirct with no protection. Scammers notwithstanding...

Not free after paying for the Gas generator. Very few sites will take the risk. Heat, Electricity and potential sparks are not well tolerated on Production and or Completions sites. I know. I run them.

I have done business with Robert on several occasions. My total transactions through Kaboom Racks to date exceeds $100,000.00. My purchases have been about 80% ASIC units and remaining 20% various infrastructure hardware for build outs. Robert has on several occasions gone out of his way to meet me at a sellers location to facilitate inspection. He provides a Sellers warranty to buyers. He facilitates and or accepts escrow. He is extremely professional and reliable. I will continue to do business with Kaboom racks and continue to recommend friends and acquaintances to him. Kaboom Racks is a trustworthy re seller. I am new here and have limited PM's. If you have any questions feel free to email me at 1pmnlr@gmail.com. I'd be happy to try and help.

Has anyone dealt with this seller yet? Did any of these machines actually transact?