Topic: For 4 mining rigs (GPUs) plug on 120V/20A outlet which PDU to use for safety? - page 2. (Read 231 times)

Thank you philipma1957 for your answer, really helpful! Let me answer your questions:

Question 1) So first question I have to attempt to fix the fuck up is to ask where is the  200 amp box?


The 200 amp box is installed in the washing room in my basement next to the garage where I set up my racks for mining.

Question 2) second question I have to attempt to fix the fuck up is do you have 4 separate circuits each one for 20 amps.

Yes my electrician installed on my panel 4 separate circuits each one for 20 amps.

Question 3) third question I have to attempt the fuck up if there are 4 circuits going to 4 outlets how many rigs do you have.

Yes so my thought processes is that for each circuit of 120 V and 20 A, the maximum wattage I can safely pull is 1920 watts (after applying 80% rule) or 16 Amp and I presently have 2 mining rigs pulling 1260 Watts (I see it thanks to the PDU with the meter integrated). I am planning to add a third mining rigs (6 GPUs GTX 1660 Super) which will be pretty close to 1920 Watts then I repeat that for each circuit/outlet.

Question 4) fourth question is since he switched out a 150 amp box for a 200 amp box do you have empty slots in the new box.

Yes in my new electrical panel I now have 13 empty/available slots for new breakers.

5) fifth question is how many rigs using how much power do you have right now.

Now I have 2 mining rigs using in average 600 Watts each and soon I will have 2 more mining rigs same type (6 GPUs, total: 600 Watts each rig).

I really explained to the electrician that I wanted to mine cryptocurrency and that I would like to have 10 kW in my garage available for that and this is what he sold me. Yea I am a newbie  

Thanks for your answer.
 

Why 120V? That's no good my friend, you should have built a 240V instead, so you will have to be looking into equipments you can run on that 120V, that's a bad idea, almost all electricity appliances can work on 240V but not all can work on 120V, some will even cause problem for you

Well before you did anything at all you should have asked us what to do
.
you really should have went with 220/240 not 120

I can not begin to tell you how much you fucked up by having 120 v outlets installed.

1)So first question I have to attempt to fix the fuck up is to ask where is the  200 amp box.
2)second question I have to attempt to fix the fuck up is do you have 4 separate circuits each one for 20 amps.
3)third question I have to attempt the fuck up if there are 4 circuits going to 4 outlets how many rigs do you have.
4)fourth  question is since he switched out a 150 amp box for a 200 amp box do you have empty slots in the new box.
5) fifth question is how many rigs using how much power do you have right now.

you really should have went with 220/240 not 120


at least you are able to say you do not understand what to ask for.

The fix could be cheap if you have dedicated outlets to dedicated circuits.

Hi Bitcointalk,

I recently changed my electrical panel from 150 AMP to 200 AMP and then my electrician installed 4 outlets of 120V/20A each in my garage.

I understand that for one outlet of 120V/20A, the maximum Watts is 120 X 20 = 2400 Watts and with the 80% safety for power surge I can safely use 1920 Watts (2400 X 80%) or my electrician told me you're good with 2000 Watts per outlet.

The problem I had is that I was looking online to buy a power meter to monitor the total number of Watts I pull from one outlet (to stay at or under 2000 Watts for safety). The power meter I have (P3 Kill-A-Watt) has an amperage capacity of 15 Amps so I cannot use that device because my outlet is 20 Amps.

I was looking for a power meter that I can plug directly in the outlet for 20 Amps and apparently it doesn't exist. I called my electrician and he had issue to understand my question. He was telling me: "look at the device you want to plug for instance a fridge it's written on the sticker the Max Watts". I tried to explain that a mining rig has many electrical components and I will try different GPUs with different power consumption etc. but he was confused.

So I just bought on Amazon a Power distribution unit with a display showing amperage, voltage, KW, IP Address, etc. It is this model: CyberPower PDU41002 Switched PDU, 120V/20A, 8 Outlets
Its power plug is L5-20P so I had to buy a power adapter cable (L5-20P to NEMA-L5-20R 125-Volt 20-Amp) because my outlet installed in my garage are NEMA 5-20.

I am writing all this because I am a newbie with electricity and installing many GPUs mining rigs and I would like to know if my thought processes is correct? Also the PDU is CAD$ 426 which is not cheap. Will I have to buy these kind of PDU for every rack/outlet (I want to fill 3 or 4 mining rigs per rack and per outlet) I want to manage?

Thank you