!!!THIS IS A MUST READ IF YOU PLAN TO MINE OR CURRENTLY MINE!!!
I’ve been reading on a lot of different forums (prior to TheBitcoin.Pub) and even on our own forum about people not knowing the electrical needs of their GPU mining rigs. I’m here to tell you that @peter and I have spent a lot of time researching and implementing what it takes to get multiple rigs up and running. We have contacted electricians and even consulted with electrical engineers. This information is GOLD please stick with me as I explain.
WE NEED MORE POWER!
Many of you have probably googled how to build a GPU mining rig and watched YouTube videos on it but the one thing that they never tell you is what the strain on your electrical infrastructure is going to be. Most of you are probably running GPU mining rigs, or plan to, at your house. Let me share with you what Peter and I have learned. When Peter and I first decided we were going to build multiple GPU mining rigs we consulted with an electrician and an electrical engineer to let them know what our electrical demand was going to be. We had an electrician come to Peter’s house and check out the wiring and the electrical panel. Here is what we learned:
Electrical Wiring - Most houses are build using 14 AWG electrical wiring. 14 AWG electrical wiring is designed to handle electrical loads up to 15 amps per building codes. Why? Any amperage over that will cause the shield around the wires to melt due to heat. If you are using a 1500watt PSU, it is probably rated for a 15amp input. So you are probably thinking, “I’m good”, no. That maximum load on the wires isn’t made to handle that load 24/7. Typically, electrical engineers would recommend only going to about 80% of the full load. Also, lets say you want to run multiple GPU mining rigs in the same room, you MUST verify that all the outlets in the room are ran in parallel and not in series. Layman’s terms, each outlet directly feeds back to the breaker box. Otherwise your rigs will be running on the same circuit and you will overload the wiring and the breaker. Consult with a certified electrician about installing 12 AWG electrical wiring on 20 amp breakers if you are going to build more than one GPU rig.
Extension cords - PLEASE DON’T USE EXTENSION CORDS! Read the warning labels on the extension cords. They are not made to handle the continuous load that the GPU mining rigs demand. Extension cords are designed for temporary use only. I have seen extension cords overload or malfunction and pop (Christmas 2016).
I’M GIVING HER ALL SHE’S GOT CAPTAIN!
Now that you have invested into the electrical infrastructure, lets talk about projecting electrical costs. There are many ways to modify the GPUs to use less power and not decrease hashrate. That will be covered later. For now, we are going to say that you are a complete newb and are running factory settings with no custom overclocks. You are going to need to calculate how many kilowatt-hours (kWh) you will be using per day. I’m going to use the example of a 1500watt PSU running at full capacity for 24 hours.
1500watts x 24 hours/day = 36,000 watt-hours/day
36,000watts / 1000 watts/kW = 36 kWh/day
Now go to your electrical bill and find out what your electric company charges you per kWh. For this example I’m going to use $0.12/kWh.
36 kWh/day x $0.12/kWh = $4.32/day
So assuming your GPU mining rig is running at it’s full 1500watt capacity (which it won’t be), you will be spending $4.32/day in electrical costs. Before you get discouraged by this and think, “Well damn that’s $129.60 per month. I’m not going to mine.” Let me say this, you are essentially exchanging electrical costs for bitcoin using the method of dollar cost averaging. Think about it, you are purchasing $129.60 worth of bitcoin per month through mining plus earnings and you don’t even have to pay a fee for purchasing it!
I hope this has been helpful for all of you in planning for setting up your own mining rigs. If you have any questions PLEASE reply below and I will answer them as best I can. Tweet this out, share it with your friends, this is important!