Hey everyone. Great forum here. I'm new on here, but have done a little P2P trading etc and have been pondering mining for a while. Almost posted this in the bitcoin section but caught myself. Hopefully its properly posted in the Altcoin section where it belongs.
I've ordered from Bitmain 12 D3's and 2 L3+. Respectively I've also ordered the power supply units for each unit. 12 of the AWP3++ for D3 and 2 of the L3+ AWP++. (I know I could have powered the two L3+ using one AWP++, but I figured it would be smart to have at least one spare, in my experience one is actually not even enough to be 'spare') I don't know if I was lucky or not, I believe I am part of the late November batch. I know difficulty and all going up might never see ROI for months (if I do see ROI), but I am learning and this is all part of it in the long-run for me. In learning I found GPU mining and ASIC mining. See how I'd like to get my feet wet, I've decided to do ASIC mining first. I'm a tinkerer so I like to try new things.
I have a room that has two large windows and dimensions are 7' x 7'. Essentially a box with one side windows, two solid walls, and one wall with a door. The ceiling height is 8'. The interior of the room is open to any design I'd like it to be.
I also have access to two PTAC 12,500 BTU air conditioning units if I need. From what I understand it is very hard to cool, but most important thing is to exhaust the heat. My understanding is each unit is exhausting ~250 cfm. So at 14 units that is 3500 cfm of heat to exhaust. My plan is to build a 'hot box' in the center of the room. Put two wire shelves (my so called 'racks') on each side of the 'hot box'. ( The plan is to do one side with ASICS and within next 4-6 months do the other side with GPU mining.) Build the back walls right up to the rack and without any attachments cut holes for the miner exhaust in the drywall. ( I think drywall will be best because of its fire/proof/retardant ) . Inside of the hot box put one,two,or three(not sure yet) fans that will exhaust the heat directly to the outside. No ducting etc, just two fans directly in the windows pulling air directly out of the 'hot box'. The power is available at this room already. There is a quantity of 2, 300 amp panels downstairs that just has to be moved upstairs. These panels used to power a hotel. Long story short we have demolished one half of the hotel so we not longer have any use and they are currently disconnected. If I had done some research a year ago, I wouldn't have demolished the property instead just shuttered it and use the rooms for one miner in each lol. I have local electrician contacts that can accomplish this for me. I plan to have the panel installed inside the cold section. I think I have read too much and sort of confusing myself so posting this here so maybe I can get some guidance from the senior more advanced members here. I am confused on the amps per unit and the 20% rule. A little help definitely appreciated. Okay I'm asking for a lot of help, but I promise I've done a lot of my homework.
Here is where my questions sort of start.
What is the most efficient way to have the electrician wire up the plugs? My understanding is that I should use 30 amp 220/240 breakers with an l6-30r plugs and 10 gauge wire is ideal.
How many outlets do I need setup? (this is where I was confused with PDU, amps, and 20% rule) I want it to be safe.
Is this the correct PDU I need and if so how many?
http://www.ebay.com/itm/Genuine-HP-EO4501-Server-Power-Distribution-Module-228481-002/232449268221?Wanting to confirm that the wall outlet for the PDU needs to be these and how many will I need? I think I could figure this out but have confused myself reading on the amps and 20% load issue.
http://www.ebay.com/itm/Pass-Seymour-locking-receptacle-L6-30R-MADE-IN-U-S-A-30-amp-250V-twist-lock-/390917364485?Wanting to confirm that from the PDU to the Bitmain PSU's I will need these cords. Seeing as how I have 12 PSU's coming I assume I will need 12 of these?
https://www.monoprice.com/product?p_id=24206What is proper way to 'surge protector' these? My electrician contact told me there is a box he can install inline with the panel that will help for surge protection.
In my hot box, there will be 3500 cfm exhausting into it. I assume I need to move at least 3500 cfm with a fan. My question is does it matter how big my box is and what output fan I use? I'd like to keep it aesthetically appeasing as it is a property that is still in business. I've seen these quiet vortex fans that move lower volumes of cfm, but I was not sure if the heat build up would feed back into the miners. I could always use more of the lower volume fans to get to at least 3500 cfm, but if I want to future proof it for GPU mining as well, I may have to bite the bullet and put in the big wire cage fans that move 5000-6000 cfm. Also for inputting air into this room, do I need to actually put fans inputting just as much cfm? Or can I just put a grill with dust filters to allow natural suction in. I do have spare ptac units available that are rated at 12500 btu each. Easily can have those installed if one thinks that will help.
As for my electricity costs they are actually decent at .10kwh and .12 kwh during peak. Though fortunately for me the hotel is absorbing the electricity costs so its sort of a win/lose for me. The power bill for hotel is already high so its just a bit higher in retrospect.
I'm open to all other suggestions as well. I could just ship them to cohosting location, but honestly that takes the fun out of it for me.
Thanks in advance to those who made it this far reading. Extremely thankful in advance to those who take a moment to see what crazy endeavor I've gotten myself into. There is a lot of great information on this site, and only hope to read and learn more.
