I figured I would provide an update for those that are curious if I died in a fire or not in this past week.

Miners are running well and within derated ampacity limits of the wire gauge that was used.

I've been bringing them up in groups and taking readings everywhere to make sure its all going to plan.

These things are super loud, next project is some sort of enclosure to provide some soundproofing and path to extract the hot air.

Is that mesh on your shutters what you are considering the air filter?

While it looks like it'll keep out bigger debris it won't do anything for filtration purposes. You want to find a home furnace filter style filter sized for that opening. Personally, I'd recommend some form of a washable electrostatic filter since you can get them made to size and they allow for decent airflow compared to big box store furnace filters. They do cost a little more and require cleaning but you won't have to buy disposable filters all the time.

Another thing to keep in mind is that adding these filters will cause drag in your system in terms of airflow. IE the higher the efficiency of the filter the more it restricts airflow through it. This usually means you'll need to compensate by increasing your intake throughput.

Hey Guys,

I'm getting to the point where I am about ready to flip the big switch outside and start bringing miners online and just wanted to get another set of eyes just to make sure I'm not doing anything terribly egregious in regards to how things are set up.

I have two sperate service runs in the space I am in. They are both 3/0 runs to separate 225 Amp panels. One panel has lights and fixtures on it for the space so I will be leaving it alone. The other is bare (no breakers or circuits) so I will be using that one to stand up the first pod.

Panel Notes:
Stinger Hi-Leg configuration
A - Single Phase 120v
B - Three phase 208v
C - Single Phase 120v

I'm using 30 Amp tree-pole breakers and only running off of the 120v lugs
Since this is a service panel the Ground and Neutral are bonded.

25ft EMT run to L6-30 receptacles using 10 AWG wire
Each receptacle will connect to a 30A 208/240v PDU
Miners connect to PDU which has 8 Amp fuses on outlets
Two shorter runs to power two 120v receptacles for other devices, each on a separate 1 pole breaker

Airflow looks like so:

Air > Filter > Enclosure > Blower Fan > S9 Bank > Exhaust into empty space > Extracted outside

Questions:
Anything look terribly out of place? I'm open to suggestions/feedback.

Since neutral and Ground are bonded at the panel then running either is just for organization's sake? As an example, wiring up a 120v outlet will take a red (hot) and white wire (neutral/ground). There will be no green ground wire since the neutral is already bonded to it at the panel.

Anyone willing to recommend a power/temp logger?

I just remembered to double check to see if the panel is grounded as well, if not I will ground it to the tap in the box. All of the receptacle boxes are grounded as well.

I know that being newly registered and not having built up any trust with the community yet will be detrimental to my efforts here, but I figured I probably wasn't the only one looking at options on what to do with my miners once I get them.

I have been looking for industrial space to store and operate my miners and inadvertently stumbled into finding space in a Tier 3 datacenter. I'm waiting for a response from the realtor I met with last week to see how this shakes out (I should hear something in the next few days). In short, it is much more space and power than I will need and I am considering opening that up to others to have their equipment hosted.

The google form linked below is a basic questionnaire to gauge interest and ask questions on what people are looking for in a hosting provider. I will also post comments in this thread as the situation develops.

https://docs.google.com/forms/d/e/1FAIpQLSc4wz43B1ss4Ku744jcBQGJoK-L0zxPv7gyOU0u32LHFAEymA/viewform?usp=sf_link

Aside from the noise and heat, keep in mind that these things pull down at least ~1400 watts and on a typical 120v household that's pretty much an entire 15 amp circuit. Depending on how your sockets are spread out through your home, this may lead to other logistical "challenges."

I've been informed that due to surging demand the price of the integrator kit is now $30k and still requires a $2M order and a 6/7 month lead time.

I saw your PM, but apparently, I am unable to respond because I am over my limit of 2 pms since I registered today and am a new user (I've been lurking here since 2010).

I asked for the B8 and Asic spec sheets and they sent them over. I was told, but not provided documentation about the Integrator Pack.

Do you have a window open or some other air movement in the room to facilitate airflow? If it is just exhausting out the window you won't see much of a temp drop if it continues to draw from the same flow of air.

Wow, thats pretty silly. It appears there are a few things going on here.

I wasn't told anything about getting reimbursed for the Integrator Pack purchase. So for the policy to change from that to what I was quoted in a span of two days is odd.

Spend 2 Mil and wait for a year to get your product. I don't think I have that kind of trust for vendors in general, let alone here.

What was attached for the integrator kit information? I had to ask for the B8 and asic chip spec sheets.

The S9 produces about ~220CFM of exhaust, so as long as that inline fan has a rating of greater than that and so does your ducting you should be fine. Depending on the number of bends and material used you may need another fan in the front as well.

When (time of year) did you ask for a quote?

The messaging was rather disjointed, but I'm still not sold that more than two people (BF side) were involved in the exchange. I watched an interview with a BitFury guy at some conference from Oct 2017 where he said the price for B8 units was 5200 and I was quoted $7k. Maybe they do it to see if you balk at the price tag or ask more questions?

The B8 itself houses 576 chips according to their specsheet.

The 100 chips included in the order are for prototyping purposes.

I asked them that same question since they advertise the chip differently on the site and got this as a response:

"The 75GH/s I stated is based on very conservative test results. In the right environment, the chips can run up to 100GH/s."

I should have probably included this:

"The integrator pack consists of 1 full B8 server, 100 chips and 15 control chips."

I believe the B8 Included with the pack is ~50TH

A standalone B8 is $7000 is available as well but needs to be part of that $2M order.

So when you consider the price of an S9 (~14TH @ $2830) compared to a B8 (~50TH @$7000) you get ~$202/TH (s9) vs ~$140/TH (B8). Previous to BitMains price increase the S9 was at ~$107/TH. None of these numbers factor in shipping costs.

I've recently reached out myself (12/20) and can corroborate this. I was quoted "We can offer our 75GH/s chips at USD8.15 per chip, with a minimum order value of USD2M."

Also offered was an Integrator Pack:

"The integrator pack consists of 1 full B8 server, 100 chips and 15 control chips. Price for the integrator pack is USD7500."

I asked further questions regarding delivery, pickup, and timelines:

"Due to current market demand it can take up to 6/7 months"

"The integrator pack can usually be delivered within 25 days"

"Delivery time on the B8 at the moment can be up to 6/7 months"

"All products are sold ex works, so will require pick up. The integrator pack will need to be picked up in Amsterdam, the subsequent chip order in korea"

To purchase any of this, it all needs to be a part of the $2M order, which is a bummer since now that BitMain raised the price of their miners in the last batch the $/TH is in their(BitFury's) favor.