220V vs 110V for new panel install

[vegascoiner]

I am having an electrician install a 200AMP panel on a 3 phase transformer and was wondering if I should go 220V vs 110V? I want to maximize the panel as much as possible, don't care about the electricity cost as much. Going to be running S9's and L3+'s.

[Raymond_B]

I am having an electrician install a 200AMP panel on a 3 phase transformer and was wondering if I should go 220V vs 110V? I want to maximize the panel as much as possible, don't care about the electricity cost as much. Going to be running S9's and L3+'s.

You do not have to choose one or the other. You can run single phase 220 or 110. Talk to your electrician he can help you out. Although for Bitcoin mining I would recommend 220v 30A circuits.

[philipma1957]

I am having an electrician install a 200AMP panel on a 3 phase transformer and was wondering if I should go 220V vs 110V? I want to maximize the panel as much as possible, don't care about the electricity cost as much. Going to be running S9's and L3+'s.

So what transformer size

3 phase is complex

I assume it is a commercial setup

is the power 480 and transformer lowers it.

here is what I mean


https://www.zoro.com/acme-electric-transformer-480v-208v-wye120v-15kva-t3533111s/i/G2476284/

it tales in 3 phase 480 and turns it into 208 not 220

[Raymond_B]

3 phase is different, but if you simply use 2 pole breakers and leave the 3rd leg alone it's no biggie.

[philipma1957]

3 phase is different, but if you simply use 2 pole breakers and leave the 3rd leg alone it's no biggie.

disagree that is not balanced.  and depending on the transformers it can be an issue

the one I linked is in-house and can do about 11 kwatts at 208  or maybe 3x  20 amp 240 volt 

I don't know  how the transformers he is using are configured.

I also do not know the size.

your way can work with a large transformer maybe.

[Raymond_B]

3 phase is different, but if you simply use 2 pole breakers and leave the 3rd leg alone it's no biggie.

disagree that is not balanced.  and depending on the transforms it can be an issue

Interesting, I have a 200A 3 phase panel, only my AC is actually 3 phase. Everything else uses 2 pole breakers and is fine, including my sub-panel. Not arguing, just saying.

[philipma1957]

3 phase is different, but if you simply use 2 pole breakers and leave the 3rd leg alone it's no biggie.

disagree that is not balanced.  and depending on the transforms it can be an issue

Interesting, I have a 200A 3 phase panel, only my AC is actually 3 phase. Everything else uses 2 pole breakers and is fine, including my sub-panel. Not arguing, just saying.

don't know your transformer that feeds it.

If it is from the street to the panel the transformer on the pole is bigger then what I linked.

if it is in-house  maNY COMPANIES HAVE 3 OR 4 LIKE I LINKED  leading to sub panels.  balanced

[Raymond_B]

3 phase is different, but if you simply use 2 pole breakers and leave the 3rd leg alone it's no biggie.

disagree that is not balanced.  and depending on the transforms it can be an issue

Interesting, I have a 200A 3 phase panel, only my AC is actually 3 phase. Everything else uses 2 pole breakers and is fine, including my sub-panel. Not arguing, just saying.

don't know your transformer that feeds it.

If it is from the street to the panel the transformer on the pole is bigger then what I linked.

if it is in-house  maNY COMPANIES HAVE 3 OR 4 LIKE I LINKED  leading to sub panels.  balanced

OK, sorry, yeah I did not follow the link. Yes mine is straight from the pole to the building.

[the_electronrancher]

My opinion is to go 220.  Mining PSU all need >208v to deliver the required wattage.  Some PSU can run on 110v, but the input current limit greatly reduces the input power.

Use 220/240v, distribute using L6 connectors just like a data center.  You'll get the cheapest rates for PDU , etc if you model your power plan after a data center because there is so much equipment out there for that industry.

[vegascoiner]

The building has it's own 400 AMP transformer with an option for 2 x 200 AMP panels. Only one panel is installed, going to install the second one this coming week.

From panel A:
Volts = 208Y/120V
Phase 3 Wire 4
Amps 225
Neut volts 120

I guess I can keep panel A at 120V and do the new panel at 208V. What is a good PDU I can find suitable for the L3+/S9?

[the_electronrancher]

Any PDU is probably fine.  The ones I use are L6-30 type input plug, and use c13-c14 cords to connect from the pdu to the miners.

I see a lot of tripp lite pdu at the data center I'm at, but I use old ones from server technology that allow me to log in remotely and flip plugs on and off.  One nice feature is a readout that tells you the current draw.  A quick glance says if all is well.

[grivero1983]

I am having an electrician install a 200AMP panel on a 3 phase transformer and was wondering if I should go 220V vs 110V? I want to maximize the panel as much as possible, don't care about the electricity cost as much. Going to be running S9's and L3+'s.

If you have a 3 phase circuit i suggest you take the advantage of using the 220V configuration, the cable you have to use is a lower AWG thant in 110V bacause you devide the Ampacity of the cables by 2 when you are using 2 phases and 3 on 3 phases circuit.

The cables stay at lower temperatures and the degradation will be 0%.

The electrician must be able to distribute equaly the charges in the circuit and you may configure 1 S9 + 1 L3 in a single outlet, at 2100 amps @ 220V = only 9 amps per phase.

Use dryer outlets so there are no hot spots in all your circuit!.

If any questions please ask.

Regards,

Guillermo.