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[sorry2xs]

well if you have a 240 volt @20 amp it should carry 3500 watts safely  
edit: also you can google "power formula" and do the math for your self

[1715069953]

1715069953

[wmabern]

rentals cannot possibly work on multiple occasions.
I understand the 'rush', but they are useless to make money, in my opinion.

Not as useless as buying a machine before the halving that will never ROI.  I've dropped 140th to 40th this past week, but I won't go below 20th.  I've bought 1 BTC plus I'm running one sp20 since January and I have had 16BTC in payouts.  Em sounds good, if you know when drop speed and let go.  Pull in the coin. I'm not so good at that part, just growing speed.   I just have a hashing addiction though and I do long rents. I'll rent from people off of the rental sites too. So it has potential.  You run rigs you owe for power in bad luck plus roi, but you have your rig left.  They are not useless, but I don't understand the rush either.  Making a big deal and rushing drives the price up substantially.  Rentals work on every lucky day though, because they make money over cost.  So they must work on multiple occasions since lucky days will come. A 300 percent day at 100th is pretty nice when only paid to rent 3 days.  In my opinion they are useful to make money, but I don't understand the rush.  The rush drives up the price.  You will make money and you will lose money.  You always got some comeback coin if don't go crazy though.  Look forward to the new avalon rigs so I can be less of a renter though.

I am now currently looking on both Amazon and Ebay for some used hardware that I can run as my own to increase my hash instead of renting.
My issues are with having enough power outlets to take care of what hardware I can get used.
I have already gotten an electrician friend to run a 240 to my mining room. That and another new outlet are both 20amp lines. I have one of my S7's running from the 240 outlet using a BitMain PSU and the other S7 is running from a EVGA SuperNOVA 1600 PSU connected to the new 20 amp outlet.

I'm looking for some hardware with at least 3-5 TH of hash that I can somehow work into my layout. I have some 110 outlets open also. So a lower powered miner that I can either use the 110 or run off the remaining connectors on the 1600 PSU is what I'm looking for.

I'm really just browsing now, but if I can get something rather cheap that can up my TH at least another 5TH cheaply I'll be happier.
There is a lot of hardware to choose from. Everything from S3's to Avalon's to Spoonies.
It's always fun to browse hardware anyway.

Anyway I'm just babbling and wishing I had another 240 outlet or two to add another S7 or two. Perhaps I'll ask my electrician friend if he can add a couple more outlets. He charges me very little for the work and lines /outlets as it's only about 25 feet from the breaker box. But I tend to get carried away with these things. If I had ten 240 outlets in that room, I'd try to put ten S7's in there....

Just dreaming of more hash power....
Best wishes.

to be honest id save up as much bitcoin as you can and wait till new gen machines come out..
its only 72 days till the halving..  everything you can get now would either have to be super cheap, or free..

Yes was thinking the same thing as well. But it's always fun to browse the hardware! Thanks for the reply.

[wmabern]

well if you have a 240 volt @20 amp it should carry 3500 watts safely  
edit: also you can google "power formula" and do the math for your self

I'm really just browsing and hoping for something cheap to pop up. But as @aarons6 said, it would be wise to wait for the next gen hardware to arrive and then have it drop some in price before making a purchase. Hopefully lower priced (after a few months), and a nice hash rate with acceptable power consumption.

Just out of curiosity, would you think that a 240 power strip coming from the 240/20amp plug would handle two Bitmain PSU's and power two S7's? (I'm electrically dumb.)
Thanks for any thoughts regarding that.

Just wanting my own miner farm for a couple hundred bucks. LOL

You can call me a dreamer, but I'm not the only one...

[sorry2xs]

i don't see why it couldn't carry 3 bitmain psu

[sorry2xs]

when i awake there will be a half dozen blocks or more

[wmabern]

i don't see why it couldn't carry 3 bitmain psu

Well, I just bought another S7 with "Power Supply Kit for Antminer S7. (2) Original HP 1000w PSU, (2) X-Adapter Rev: 2, (10) pair 14AWG THHN PCIe cables. 110/120V or 208/240volt compatible" that I can run off of my available 110 outlets.

The S7 was listed as "new" and unused on Amazon and was quoted as being a batch 10 during question and answer. The price was $525 after my Amazon discount/credit for just the miner. The HP PSU kit was $147 and will run off of my available 110/120V outlets.

The best part is that it's on my Amazon card with 180 days interest free.

At least I can add ~4.7+TH to my home mine operation.

I will save other funds for newer hardware that MAY come out towards the end of the summer.

I'm happy to have found something at a somewhat reasonable price that I can incorporate into the mine room without worrying about the electricity.

Next week I'll have the fun of hooking some more power into the grid. That's the FUN part!!

Best wishes all and blocks away!

[wmabern]

when i awake there will be a half dozen blocks or more

Yes, I hope you are exactly right.

[Crispyato]

well if you have a 240 volt @20 amp it should carry 3500 watts safely  
edit: also you can google "power formula" and do the math for your self

I'm really just browsing and hoping for something cheap to pop up. But as @aarons6 said, it would be wise to wait for the next gen hardware to arrive and then have it drop some in price before making a purchase. Hopefully lower priced (after a few months), and a nice hash rate with acceptable power consumption.

Just out of curiosity, would you think that a 240 power strip coming from the 240/20amp plug would handle two Bitmain PSU's and power two S7's? (I'm electrically dumb.)
Thanks for any thoughts regarding that.

Just wanting my own miner farm for a couple hundred bucks. LOL

You can call me a dreamer, but I'm not the only one...

You have 4800watts at the wall.  So 4800watts on every combined outlet connected to the 20 amp breaker.  Also including any lights connected etc..  More outlets are only good if you add a breaker and why not just add a higher amp breaker? At 60amps you got 14400watts on all connected power.  So accordings to Ohms law the only thing stopping your wattage increase is resistance.  The Resistance between your miners and the wall is your strips/extension cords.  Make sure you have some good surge or back up for high watts or a separate decent surge on each and you should be golden.    

[citronick]

how many S7s can I run with 60amps/240v? assuming I use the Bitmain PSUs.

[SaBit]

About 10

Its 14.4kw

[wmabern]

well if you have a 240 volt @20 amp it should carry 3500 watts safely  
edit: also you can google "power formula" and do the math for your self

I'm really just browsing and hoping for something cheap to pop up. But as @aarons6 said, it would be wise to wait for the next gen hardware to arrive and then have it drop some in price before making a purchase. Hopefully lower priced (after a few months), and a nice hash rate with acceptable power consumption.

Just out of curiosity, would you think that a 240 power strip coming from the 240/20amp plug would handle two Bitmain PSU's and power two S7's? (I'm electrically dumb.)
Thanks for any thoughts regarding that.

Just wanting my own miner farm for a couple hundred bucks. LOL

You can call me a dreamer, but I'm not the only one...

You have 4800watts at the wall.  So 4800watts on every combined outlet connected to the 20 amp breaker.  Also including any lights connected etc..  More outlets are only good if you add a breaker and why not just add a higher amp breaker? At 60amps you got 14400watts on all connected power.  So accordings to Ohms law the only thing stopping your wattage increase is resistance.  The Resistance between your miners and the wall is your strips/extension cords.  Make sure you have some good surge or back up for high watts or a separate decent surge on each and you should be golden.    

The new lines, a single 240/20amp and the single 110-120/20amp line my friend installed have nothing running off of them such as lights or anything else. They are entirely dedicated to the miners/PSU's.

Nothing at this time is running from an extension cord except a 110/120 small air conditioner running from one of the regular 110 outlets and a fan to evacuate the hot air from the room to the outside.

My friend also installed a direct ground surge protector for the whole breaker box that is supposed to be a "whole home" surge protector. He is a certified/licensed master electrician, so I hope he knows what he is doing.

From what I understand from him, the whole breaker box is a max of 200 amps and he said I was using very little of that as I have a gas furnace, stove, and hot water heater.

Thank you for your reply and information. It's greatly appreciated!

[citronick]

About 10

Its 14.4kw

Thanks SaBit - I also used the online calculator and got 9 x S7 (14400w div 1600w=9)

My place gets 240v 3-phase power, my electrician has assured that there's room for expansion.

But I will stick to 60amps, because I can't afford any higher than that.

[Crispyato]

Yep sabit is on, 10 is about right.  Volts x amps at breaker = watts at the wall. Then amount of miners X actual power draw.  The more room you leave the faster and cooler your miners/psu will run and more stable they will be. PSU choice is more of a quality/stability decision than power usage. Efficiency is marginal if your talking KW.    I became a fan of corsair gold and up.  Only PSU brand my s1 fleet didn't kill.   I was maxed and hot with cords from every room though. Nothing like an atx that knows when to shut down without damage before a pcie, chip, or the PSU  is fried.  I knew I could leave the place and they were safe.  Sure thing WMA.  You got a sweet setup and an electrician buddy.  If you got a 200 amp with loads of room I would ask for 60amp to replace the 20amp in that room if the lines can take it.  10 vs 3... You would be gravy and could add new incoming hardware to your 3 s7.

[wmabern]

Yep sabit is on, 10 is about right.  Volts x amps at breaker = watts at the wall. Then amount of miners X actual power draw.  The more room you leave the faster and cooler your miners/psu will run and more stable they will be. PSU choice is more of a quality/stability decision than power usage. Efficiency is marginal if your talking KW.    I became a fan of corsair gold and up.  Only PSU brand my s1 fleet didn't kill.   I was maxed and hot with cords from every room though. Nothing like an atx that knows when to shut down without damage before a pcie, chip, or the PSU  is fried.  I knew I could leave the place and they were safe.  Sure thing WMA.  You got a sweet setup and an electrician buddy.  If you got a 200 amp with loads of room I would ask for 60amp to replace the 20amp in that room if the lines can take it.  10 vs 3... You would be gravy and could add new incoming hardware to your 3 s7.

I know they put in new cables for the 240/20amp and the single 20amp line, I'm thinking they were all 14 AWG cables, but i'm not sure of the other wire gauges that are already installed in the room/house. Probably lighter gauge cables. I'll have to get him back over here soon with a pizza and a twelve-pack to "talk over" some more upgrades.

As far as the new upcoming S7 next week, I know I have the juice to handle it. After that, I will need some guidance from a professional electric man to keep my house from burning down. LOL

I DO keep a fire extinguisher right inside the door to the mining room. I also need to get a smoke detector for that room only. That has been on my mind for a while now.

I don't know what he will think about upping from 20 to 60 amp fuses in the main breaker box. Perhaps a separate breaker box can be run from the main for just the miner room would be an idea to consider. That would clean up a lot of issues and potential problems making things cleaner and clearer.
But for now, as you said, I'm golden.
Let's see some BLOCKS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

edit: I do have some AC coming in currently at the intakes to the miners/PSU's. The air coming out of the miners is almost COOL. But I also have a 20" window fan in another window sucking the hot air outside. Man, it drops the room temperature down at least 40 degrees!

[yslyung]

how many S7s can I run with 60amps/240v? assuming I use the Bitmain PSUs.

you will NOT be able to use all 60A mate. make sure you add some allowance & also depends on your wiring job.

if you're talking across the causeway then most likely you will NOT get 240V all the time, i'd say use an avg of 1300W / 235V so it's roughly 5.53A per miner.

60A rated supply - 20% allowance so you have 48A to use (safely) so 48A / 5.53A per S7 = 8.679 S7's, 9 should be ok per 60A phase to be used safely.

try to get a good contractor or DIY (in my case) i always opt for pure copper cables (16mm for mains RYBNE) & good main switch, ELCB (RCCB) & MCB's. i'd also suggest to use a 2 gang power point per mcb with each Earth & Neutral line. best is not to loop them.

get a clamp & clamp so you will know the actual amp draw. i've seen as low as 4.7A draw on the 4.73th/s version but they do go as high as 5A draw when the hash is higher but it avg's out at abt 4.7A per miner. clamp to be sure.

GL & have fun. you can always PM me if you have any questions.

ok back to topic, whereisblock ? me long time no see block no happy no love you looong time ;( sob !!!

gimme ma supa dupa GREENS !

[wmabern]

how many S7s can I run with 60amps/240v? assuming I use the Bitmain PSUs.

you will NOT be able to use all 60A mate. make sure you add some allowance & also depends on your wiring job.

if you're talking across the causeway then most likely you will NOT get 240V all the time, i'd say use an avg of 1300W / 235V so it's roughly 5.53A per miner.

60A rated supply - 20% allowance so you have 48A to use (safely) so 48A / 5.53A per S7 = 8.679 S7's, 9 should be ok per 60A phase to be used safely.

try to get a good contractor or DIY (in my case) i always opt for pure copper cables (16mm for mains RYBNE) & good main switch, ELCB (RCCB) & MCB's. i'd also suggest to use a 2 gang power point per mcb with each Earth & Neutral line. best is not to loop them.

get a clamp & clamp so you will know the actual amp draw. i've seen as low as 4.7A draw on the 4.73th/s version but they do go as high as 5A draw when the hash is higher but it avg's out at abt 4.7A per miner. clamp to be sure.

GL & have fun. you can always PM me if you have any questions.

ok back to topic, whereisblock ? me long time no see block no happy no love you looong time ;( sob !!!

gimme ma supa dupa GREENS !

From my understanding (what little I have,) you must (should) always leave 20% for a cushion regardless of the amperage. With my sorry electrical and math functioning, I'd prefer to leave it to the pro's where it all comes naturally.
Good luck to all and be safe with your electricity.

[Sierra8561]

Does anyone have any extra bitmain $100.00 off coupons they would donate me?

[citronick]

how many S7s can I run with 60amps/240v? assuming I use the Bitmain PSUs.

you will NOT be able to use all 60A mate. make sure you add some allowance & also depends on your wiring job.

if you're talking across the causeway then most likely you will NOT get 240V all the time, i'd say use an avg of 1300W / 235V so it's roughly 5.53A per miner.

60A rated supply - 20% allowance so you have 48A to use (safely) so 48A / 5.53A per S7 = 8.679 S7's, 9 should be ok per 60A phase to be used safely.

try to get a good contractor or DIY (in my case) i always opt for pure copper cables (16mm for mains RYBNE) & good main switch, ELCB (RCCB) & MCB's. i'd also suggest to use a 2 gang power point per mcb with each Earth & Neutral line. best is not to loop them.

get a clamp & clamp so you will know the actual amp draw. i've seen as low as 4.7A draw on the 4.73th/s version but they do go as high as 5A draw when the hash is higher but it avg's out at abt 4.7A per miner. clamp to be sure.

GL & have fun. you can always PM me if you have any questions.

ok back to topic, whereisblock ? me long time no see block no happy no love you looong time ;( sob !!!

gimme ma supa dupa GREENS !

thanks man for the advice - and yes, the JB hunt is nearly there, keep fingers crossed but Internet connection will be challenging - may need 2 x ISPs.
dont worry, I will ping you if I run into problems.... 

Now..... I ate like 5 spicy chicken wings for dinner -- that got to be worth at least 5 blocks!!!

Where are you Mr & Mrs Blocks!!!

[maydna]

unfortunately, my hardware is not much high on spec.

what will happen is halving is come? is there any fluctuation with profit on avalon?

[citronick]

General Kano - are you sending us some BTCs before you turn in tonight? Thanks...