This is a DIY project because you have to, that is unless you want to spend some serious cash on a PDU with these features. I made this prototype for myself just to have a working model and then see where I can improve upon the design. In all honesty though I'm not going to need this very often but it's nice to be able to check new gear as it arrives. This will allow you to confirm for yourself the power draw of your miners among other things depending on the model you choose.
So here's the only link that really matters. It's the critical component the Multi-function power meter. There are so many designs out there but they all have some minor differences in their ratings for: Voltage, Current, and Frequency.The model I settled on is rated well beyond anything I will throw at it.
6-in-1 Digital tester My model came with the current transformer and the setup is super simple by following the visual installation. I settled on this model so I could get readings over 3000 W as I'm expecting an M20S. Apart form that I used the following that I had on hand already. * I will look for the link to what I ordered exactly.
- 12 ft of 12/2 Wire - Length is optional as needed I had this kicking around and didn't want to cut it down for a trial.
- Controller box - Easy to remove cover.
- Power cables to make cable ends - These depend on what cord ends you need - At the miner, and at your power source (PDU or receptacle).
- A couple Wire connectors.
- Not shown but it's advisable to use an electrical box for safety to hold the cable end connections. That or some other means of making the connection, it's not a good idea to leave connected wires exposed to pulling forces which could break the connections.
One thing I will point out is you need at minimum a basic understanding of electrical wiring to attach cord ends and make the meter connections. So here's some Photos. I warn you it's not pretty but it works.
So the above images are the entirety of the build and the internal wiring of the meter. I will note I would probably change a few things inside the box, like using 14 gauge wire for the sensing lines - The two leaving the base of the meter. I would either find a better material than 12/2 Wire as it's extremely rigid and can be annoying to move around.
These 3 images are my M10 running in Normal mode, then Low Power mode, followed by the other readings this was at hour 22ish on Normal mode.
