I'm not really sure if this is my first post but I'm so sure this is one of the thread I've actually sat down to read through all of its post and I can't find the perfect word to qualify it, rather than say impressive and encouraging. This thread is all about managing farms both from big or small and the information shared in addition to help offered and suggestions given have really turned up more light in my head. And all I can say to OP...Philipma1957 is that you are awesome and have managed to put together a small community within an actual community for like minded individuals, to all others who have posted and shared valuable information and also gotten detailed responses as well to your questions, I will like to say Thank You as I have taken a lot away from this one thread than the whole internet itself, on mining and having a mining farm mentality.

Though, I don't use the Onda boards or Nvidia graphic cards, but it is on my list as the next 21 cards I'm going for. I want to have an equal competitive mining setup but since my startup budget was just 10k USD, I decided to go for the most cost efficient set up. I started putting funds into mining equipments last year, I did managed to get 21 RX570 4GB cards, 7 of which are the ASUS STRIX OC, which have been flawlessly running not until the latest drivers AMD 17.2.2 and recent versions of Claymore 10.3 and 10.4 had I had issues with it, looking at other mining programs, found PhoenixMiner but it seems it ain't stable yet on some cards or Mobo's but I'm going to give it a test run for a week, hopefully this weekend assuming it's stable and would last that long.

The other 14 RX570 cards are MSI Armor OC 4GB as well, I would encourage anyone who's looking towards buying AMD cards to move away from this guys, I read in this thread as well someone saying they aren't working as other brands of cards they have. It is so true, that the second 7 card rig is not running and every time I try to running it it constantly crashes, and the other rig is running but with error constantly popping up on 2 of the cards. This cards have been frustrating, trying to mine other ETHASH algo other than ETH crashed the rig and some of the card even in compute mode would not do more than 25MH/S, 187MH/S total for 7 RX570 4GB with 980Watts power draw from the wall, I know that's ridiculous by standards. This cards were bought in the batch released November/December and since they were a rushed batch to meet demands at well then, I'm afraid the batch coming out next to meet then recently higher demands would be rushed, but since I would be picking up Nvidia cards, I certainly hope for the best and no MSI, if I have no choice then it would be the GamingX and Titanium ones only.

Here are a few questions for the Vets in here, going to be using my dryer connection for RIGS, finally found a 10-30P to 6-30R Adapter other than on EVSE who after 48hours refunded and cancelled my order, you need to have bought an EVSE product before they'll sell you any other products including adapters.

First question is, what does the 20Amps derated mean to 30amps PDU's?
 I am looking to see if I can run 4 rigs on a 30amp PDU from my Dryer connection. I live in an apartment and I have no other of changing anything, so I'm sacrificing my washer and dryer, I can do laundromats.

Second question would be general, what advice would anyone give as to how I can keep my earnings at the 1/3 ratio in terms of cost of running to profits? What should I look for, what should I aim for and what strategy would be best to use when trying to achieve this.

FYI..my electricity cost $0.13/KwH and also this is what my full time job is now since I started late last year, my goal is to try and aim for Hodling 60% of my earnings and creating a portfolio in different cryptos I have faith in, because when regulations start to hit the crypto world not all of the cryptocurrencies would be here. So apart from Hodling 60%, they rest 40% I want to go back in cost of operation, expansion and my day to day runnings.

Any ideas and advice, reads and suggestions are very much welcomed. Good to have found this thread, would go look for others in the series.