ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH

[dmwardjr]

Thanks,

So what should I tell to the electrician that would come in for survey and to give out estimate first? Well, I am planning to buy another 4 X S7 in future in total 5 X S7.

I want a 5 X 220v 30 amps circuit? What about the outlet where I will be actually plugging in?

Sorry count me as a dump when it comes to power and electrician work.

IBM PSU, is this the one you are talking about http://www.amazon.com/Genuine-IBM-Bladecenter-Computer-39Y7409/dp/B00TMPPFVS


This guy is selling. https://bitcointalk.org/index.php?topic=1206049.0  How many should I buy if I wish to have 5 x S7?


This is really interesting. https://bitcointalk.org/index.php?topic=966135.0     I like the The "Pimp Daddy" Package - $650

READ MY POST ABOVE...

HE DOES NOT KNOW WHAT HE'S SAYING.

Well, I guess my farm is defying all logic then.
I'm certainly pulling in over 200A total - all using 120V.

Is your main service panel rated at 200 Amps?

[1714706914]

1714706914

[dmwardjr]

Well, I guess my farm is defying all logic then.
I'm certainly pulling in over 200A total - all using 120V.

I'll post this to you as well.  It appears you may not have read it:

Say we had a 200 AMP Main Service Panel and every circuit was 240V circuits by using 2 pole breakers...  If every circuit was used at it's max [Not recommended if circuits are inside walls and/or conduit], you could have 10 x 20 amp / 240 Volt circuits [In the form of 2 pole breakers] for a total of 48,000 watts of power.

If we took out all of the 240 Volt 2 pole 20 amp breakers and installed 10 x 20 amp single pole breakers at 120 Volts for each circuit in the same 200 amp Main Service Panel and maxed out each circuit to its full 20 amps each [Not recommended if circuits are inside walls and/or conduit], you would only have 24,000 watts available in power.

So, both Main Service Panels were rated for 200 Amps maximum and 240 Volts maximum.  However, we can utilize the available power much better with 240 Volts instead of 120 Volts.  Does this make sense now?

notlist3d, is right...

It sounds like you need an electrician.  Trust me on what I'm saying about available watts regarding 240 Volt verses 120 Volt.  Your Main Service Panel is rated in Amps and Volts.  It's limited for 120V/240V [Either can be used] and it is more than likely limited to 200 amps REGARDLESS of what voltage (120V or 240V) for your circuits in the home.

[notlist3d]

Thanks,

So what should I tell to the electrician that would come in for survey and to give out estimate first? Well, I am planning to buy another 4 X S7 in future in total 5 X S7.

I want a 5 X 220v 30 amps circuit? What about the outlet where I will be actually plugging in?

Sorry count me as a dump when it comes to power and electrician work.

IBM PSU, is this the one you are talking about http://www.amazon.com/Genuine-IBM-Bladecenter-Computer-39Y7409/dp/B00TMPPFVS


This guy is selling. https://bitcointalk.org/index.php?topic=1206049.0  How many should I buy if I wish to have 5 x S7?


This is really interesting. https://bitcointalk.org/index.php?topic=966135.0     I like the The "Pimp Daddy" Package - $650

READ MY POST ABOVE...

HE DOES NOT KNOW WHAT HE'S SAYING.

Well, I guess my farm is defying all logic then.
I'm certainly pulling in over 200A total - all using 120V.

Is your main service panel rated at 200 Amps?

When checking this be VERY CAREFUL.  Do not touch around the main breaker.  There is a heck of a lot of electricity going through the thing.  It is a little scary.  If you are not use to electrical things I cannot stress enough to be careful around main breaker.

dmwardjr has given a lot of really good info.  I'm just afraid from answers we might have someone who should not work on the box. 

[aurel57]

Say we had a 200 AMP Main Service Panel and every circuit was 240V circuits by using 2 pole breakers...  If every circuit was used at it's max [Not recommended if circuits are inside walls and/or conduit], you could have 10 x 20 amp / 240 Volt circuits for a total of 48,000 watts of power.

If we used 10 x 20 amp / 120 Volt circuits in a 200 amp Main Service Panel and maxed out each circuit to its full 20 amps each [Not recommended if circuits are inside walls and/or conduit], you would only have 24,000 watts available in power.

So, both Main Service Panels were rated for 200 Amps maximum.  However, we can utilize the power much better with 240 Volts instead of 120 Volts.  Does this make sense now?

notlist3d, is right...

It sounds like you need an electrician.  Trust me on what I'm saying about available watts regarding 240 Volt verses 120 Volt.  Your Main Service Panel is rated in Amps and Volts.  It's limited for 120V/240V [Either can be used] and it is more than likely limited to 200 amps REGARDLESS of what voltage (120V or 240V) for your circuits in the home.

dmwardjr your right and and it all comes down to simple math. There is no magic created by using 240v vs 120v other than the use of smaller wires and a slight better efficiency and cost .

[cryptichermit]

Well, I guess my farm is defying all logic then.
I'm certainly pulling in over 200A total - all using 120V.

I'll post this to you again.  You may not have read it:

Say we had a 200 AMP Main Service Panel and every circuit was 240V circuits by using 2 pole breakers...  If every circuit was used at it's max [Not recommended if circuits are inside walls and/or conduit], you could have 10 x 20 amp / 240 Volt circuits for a total of 48,000 watts of power.

If we used 10 x 20 amp / 120 Volt circuits in a 200 amp Main Service Panel and maxed out each circuit to its full 20 amps each [Not recommended if circuits are inside walls and/or conduit], you would only have 24,000 watts available in power.

So, both Main Service Panels were rated for 200 Amps maximum.  However, we can utilize the power much better with 240 Volts instead of 120 Volts.  Does this make sense now?

notlist3d, is right...

It sounds like you need an electrician.  Trust me on what I'm saying about available watts regarding 240 Volt verses 120 Volt.  Your Main Service Panel is rated in Amps and Volts.  It's limited for 120V/240V [Either can be used] and it is more than likely limited to 200 amps REGARDLESS of what voltage (120V or 240V) for your circuits in the home.

I agree with this statement to a point, but I believe the 200AMP main service is related per pole and not total - So if you approach 200A on either pole you will trip the breaker.
If you divide the 120V services up between the poles equally, end result would be the same with 48000 Watt capacity.

[marvykkio]

They have completed production? s7 no longer available for days

[dmwardjr]

Well, I guess my farm is defying all logic then.
I'm certainly pulling in over 200A total - all using 120V.

I'll post this to you again.  You may not have read it:

Say we had a 200 AMP Main Service Panel and every circuit was 240V circuits by using 2 pole breakers...  If every circuit was used at it's max [Not recommended if circuits are inside walls and/or conduit], you could have 10 x 20 amp / 240 Volt circuits for a total of 48,000 watts of power.

If we used 10 x 20 amp / 120 Volt circuits in a 200 amp Main Service Panel and maxed out each circuit to its full 20 amps each [Not recommended if circuits are inside walls and/or conduit], you would only have 24,000 watts available in power.

So, both Main Service Panels were rated for 200 Amps maximum.  However, we can utilize the power much better with 240 Volts instead of 120 Volts.  Does this make sense now?

notlist3d, is right...

It sounds like you need an electrician.  Trust me on what I'm saying about available watts regarding 240 Volt verses 120 Volt.  Your Main Service Panel is rated in Amps and Volts.  It's limited for 120V/240V [Either can be used] and it is more than likely limited to 200 amps REGARDLESS of what voltage (120V or 240V) for your circuits in the home.

I agree with this statement to a point, but I believe the 200AMP main service is related per pole and not total - So if you approach 200A on either pole you will trip the breaker.
If you divide the 120V services up between the poles equally, end result would be the same with 48000 Watt capacity.

I know from experience a 200 amp main service panel is not rated for 200 amps for each pole.  I purchased enough rigs to trip the main breaker at 200 amps on both poles combined.  I was an electrician for 3 years in commercial work for Marathon Electrical Contractors.  I was taking classes at night to get my masters certification but did not take it to completion.  I've tripped my main service panel several times over the summer trying to figure out how many rigs maximum I could run on my 200 amp main service panel.  All of my PDU's are "metered."  

Trust me... I don't "believe" the 200 amp main service panel is 200 amps on each leg.  I "know" It's NOT 200 amps on each leg.  I "know" from experience.

I'm not saying this with a "tone" to be argumentative.  I'm saying this in a manner to try to educate.  That's all...

A 200 Amp Main using 10 x 240 Volt / 20 Amp 2 pole breakers with maximum draw on each 2 pole breaker would pull 48,000 watts of power at 200A/240V.  Any more than this "should" trip the main breaker.

A 200 Amp Main using 10 x 120 Volt / 20 Amp single pole breakers with maximum draw on each single pole breaker would pull 24,000 watts of power at 200A/120V.  Any more than this "should" trip the main breaker.

Also know this:  Current (Amps) is not flowing in a circuit without a load on that circuit.  Meaning, current (amps) will not flow without an appliance, light, TV, etc... actually turned on and running.  So, just because you have breakers in your main service panel that probably total up to more than than what your main breaker states is because it's highly unlikely you have more than 50% of current draw on every circuit wired to the main service panel.

[Tupsu]

.......... I noticed that the early B1 boards are somewhat shorter than the later batches (see bottom pic, 1st one is misaligned heatsinks, 2nd one B3 S7 ). ............

Radiators are tinned on the reverse side of board.
This is a consequence of overheating. (first picture)

I had exactly the same S5 +


Click to enlarge

From soldering melting radiators (S5+ blade)

.......... I noticed that the early B1 boards are somewhat shorter than the later batches (see bottom pic, 1st one is misaligned heatsinks, 2nd one B3 S7 ). ............

Boards are the same, housing profile is difrent.

Click to enlarge


Click to enlarge

"New" S5+ and "New" S7

[lemmyK]

How to Upgrade an Electrical Panel to 200-Amp Service
http://www.thisoldhouse.com/toh/video/0,,20802535,00.html

[notlist3d]

How to Upgrade an Electrical Panel to 200-Amp Service
http://www.thisoldhouse.com/toh/video/0,,20802535,00.html

I important thing on that link on their website: Difficulty: Hard  Work should be performed by a licensed electrician

Check local ordinances but most places will require a licensed electrician and possibly permits.  Or you might be lucky and live in a place with not much ordinances. Upgrading to a 200 amp is not really a DIY thing.

[pj40]

How to Upgrade an Electrical Panel to 200-Amp Service
http://www.thisoldhouse.com/toh/video/0,,20802535,00.html

I important thing on that link on their website: Difficulty: Hard  Work should be performed by a licensed electrician

Check local ordinances but most places will require a licensed electrician and possibly permits.  Or you might be lucky and live in a place with not much ordinances. Upgrading to a 200 amp is not really a DIY thing.

Any messing around with electricity is something I would leave to the experts.  I know some people in here have electrical work in their background, but this is something that can kill or burn your house down, so unless you are an expert (with proper experience), get an electrician.

[dmwardjr]

How to Upgrade an Electrical Panel to 200-Amp Service
http://www.thisoldhouse.com/toh/video/0,,20802535,00.html

Lacked a lot of details.  It's not quite that simple.  My home with a 200 amp service also has 8 gauge on a 50 amp circuit (The AC for summer time).  He said small, medium and large wire for 15 amp, 20 amp and 30 amp.  Why not say the gauge for the proper size breaker?  Doesn't mention anything about an inspector for home owners insurance purposes.  The list goes on and on.  Don't get me wrong, I like the video.  It's informative as far as "physical" installation.  However, it's not informative from a technical, safety and inspection standpoint.

Thanks for sharing.

[hawkfish007]

I came across some issues with my early B1 S7. I have received it on Sep 24 but didn't fire it up until yesterday. I found that 2 of the 3 boards don't work, so sent an email to info@bitmaintech.com and with their permission I took out the hashboards. Noticed that heatsinks were crooked on the 2 non-working boards and some heatsinks on the other side came off as I was pulling them. Working board's heatsink are perfectly aligned. I re-inserted the working hashboard to run it individually and left the other 2 aside. Now I don't see the second fan on miner status page even though the fan is spinning, I tried changing fan pin location without any success. The miner is running at a higher temperature 64C than my B3 (52C). Is it because I don't have the other boards the fan is not detected? Or, did I screw it up when trying to pull the boards? I noticed that the early B1 boards are somewhat shorter than the later batches (see bottom pic, 1st one is misaligned heatsinks, 2nd one B3 S7 ). It didn't rattle to indicate something is loose before I turned it on, just the 2 boards were loose when I was attaching the PCIe connectors.

Radiators are tinned on the reverse side of board.
This is a consequence of overheating. (first picture)

I had exactly the same S5 +


Click to enlarge

From soldering melting radiators (S5+ blade)

Were you able to get replacement board under warranty?

[jaipagare]

I just talked to a electrician and he is ready to put in new 30amps dual pole panel 240V in my home. Yes I am changing the default layout.

$450.00 estimated cost.

[philipma1957]

How to Upgrade an Electrical Panel to 200-Amp Service
http://www.thisoldhouse.com/toh/video/0,,20802535,00.html

I important thing on that link on their website: Difficulty: Hard  Work should be performed by a licensed electrician

Check local ordinances but most places will require a licensed electrician and possibly permits.  Or you might be lucky and live in a place with not much ordinances. Upgrading to a 200 amp is not really a DIY thing.

I am good at diy.

my home was built during the Vietnam era many homes built in New Jersey at that time used interior aluminum wire due to a war copper shortage.

I wired my entire home in copper.  I put in 32 new circuits but when it came time to put in a 200 amp 120/240 box with room for forty single pole or 20 double pole breakers I called in a pro.

The reason is simple I would not trust myself with 2 wires from the outside transformer that are hot and carry 48000 watts of power.

The licensed electrician went to my roof disconnected  the lives wires from the meter put the box in did all the inside work and then attached the two outside wires well worth the money I paid him.

[Tupsu]

Were you able to get replacement board under warranty?

Yes. The shipped me a lot of times a "god replacement board" for my S5+ miners.

From last four shipped S5+ blades  one is with temp sensor faulti + 20 degrees Celsius  higher, than the other blades , and one blade worked less than 48 hours for me.

Sending this two blades  back to China again tomorrow.
But it gets better all the time. For my 27 x S5+  blades is one with faulti temp sensor and only one not working at all.

[spazzdla]

They have completed production? s7 no longer available for days

Same question.

[hawkfish007]

Were you able to get replacement board under warranty?

Yes. The shipped me a lot of times a "god replacement board" for my S5+ miners.

From last four shipped S5+ blades  one is with temp sensor faulti + 20 degrees Celsius  higher, than the other blades , and one blade worked less than 48 hours for me.

Sending this two blades  back to China again tomorrow.
But it gets better all the time. For my 27 x S5+  blades is one with faulti temp sensor and only one not working at all.

That's good, I am quite relieved. Do you send the boards to the address listed on the paper that came with S7. It's kind of long (20# Yumin Road Shajing Town Baoan Dist Shenzhen), just want to make sure if they ask me to send the boards, thanks.

[torepia]

Hmm, just wondering: When you recieve the S7, you get a note that says you need to check if the heatsinks are attached before powering on the miner.
The problem is, you can't do this without opening the miner, and breaking warranty. Am I missing something? I did not check this, other than trying to look thru it with some light..

Do they want us to shake it? Listen for parts that are loose?

[Mikestang]

How to Upgrade an Electrical Panel to 200-Amp Service
http://www.thisoldhouse.com/toh/video/0,,20802535,00.html

I important thing on that link on their website: Difficulty: Hard  Work should be performed by a licensed electrician

Check local ordinances but most places will require a licensed electrician and possibly permits.  Or you might be lucky and live in a place with not much ordinances. Upgrading to a 200 amp is not really a DIY thing.

I am good at diy.

my home was built during the Vietnam era many homes built in New Jersey at that time used interior aluminum wire due to a war copper shortage.

I wired my entire home in copper.  I put in 32 new circuits but when it came time to put in a 200 amp 120/240 box with room for forty single pole or 20 double pole breakers I called in a pro.

The reason is simple I would not trust myself with 2 wires from the outside transformer that are hot and carry 48000 watts of power.

The licensed electrician went to my roof disconnected  the lives wires from the meter put the box in did all the inside work and then attached the two outside wires well worth the money I paid him.

I'm a big DIY guy myself also.  I do basically all of my own auto maintenance/repairs and home improvements, build my own computers, etc. etc.  There are some things that, even though I know I am technically capable of, I still leave to a professional.  Generally it's anything that could kill me if I do it wrong.

It only takes one slip up working with a main breaker and BAM, your heart will get stopped instantly.  There's also the risk that something you wired up could cause a fire and that not only puts you and your belongs in danger, but your neighbors as well.