ELECTRICITY!

[Cryptic-John]

I'm not talking about the price, I have a good deal on that.  I only pay 2.7cents per kw

I built a rig with 4 1080TI, 3 1080 and 1 1080ti (to test it out, preorder)

The rig runs great, and I was able to optimize each card individually in MSI Afterburner, but if I even power those bad boys at 85% I go over 1500watts  (using 80% gold EVGA power supplies) and blow the breaker.


I did some reading and it turns out a standard house breaker is either 15 or 20 amps, which mean  1800 watts or 2400 watts max.  It's best to not use more than 80% load, so you should use 1440watts or 1920watts at most.


How the hell are people having 4+ rigs in their house?

How much will it cost me to get an electrician out here and what should I be asking for?

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[Vann]

An electircal panel will often have several 15 AMP or 20 AMP circuts thought the house. You can find which outlets are wired to each circuit by plugging in a lamp and seeing which breaker controls the outlet. If you have or install a 240V circuit you can also run twice as many Watts for each circuit.

[ivakar]

Well, you set your PL even less, for the gtx 1080ti best option for power/performance 70%. By that you can do like  175-180 W for one card. Yes, performance will be lower but still good.
About breakers in the houses - each houses are individual, and you have to speak with your electrician how you may increase your input.

[eleceng1979]

The National Electric Code states that any continous load must have the circuit breaker derated to 80% of the nominal value.  You mentioned this.  This is due to components and wiring heating up.  Wire sizes cannot be reduced below standard ratings.  Meaning just because the breaker was derated due to the continous loads, the wire must remain properly sized to allow for sufficient margin.

ASSUMING LOCATION = USA
You need to request dedicated 240v 20A, no neutral, all copper circuits (my preference) to the area, using twist lock plugs ($$$) or straight blade 240v rated is fine ($).  Tell them it is a continous load of XXXX watts.  By using 240 amperage is less, Losses are less and you can expand.  Downfall...you need 2 spare breaker spaces.  Wire size/conductor count is identical to a 120v 20A circuit, but 2X the power.  Almost all psu will autoswitch the voltage, please verify this!

Otherwise if you are not liking the 240v, same as above in 120v circuits, using at least 20A circuits.

I would charge $2/foot for wire per circuit installed, $20 per breaker installed, $60 per twist lock receptacle and $35 per twist lock plug installed in metal 4x4" boxes, take all of that totaled up and add 20% for my profit, add $0.60 per mile from office to you.  Obviously there is the unknown cost of issues arrising, panel too small, other issues requiring fixed.  Any person conducting work in/near/crossing other improper work is required to correct it if seen and presents an immediate hazard.  Any person with a brain would scope it all out first to give you the exact price up front.  I am a midwest USA, non union, licensed, do this for a living kind of guy so my prices are not NY, FL, or CA robing a mofo blind.  What you need is low hanging fruit for any local guy, it's pretty easy...  A 50' cable pull in an open basement without hoarding or cat shit everywhere would take about 2 hours a circuit from S 2 F.

Dedicated equipment loads require dedicated power, period.

Any electrician that comes to your house telling you anything different should be asked to leave... and his license revoked.  If you want a second opinion on a quote PM me.

Those of us with more than a couple GPU's have dedicated power/areas.  There is a reason my pole barn has a 3 phase 400A service on it...and it's not for a single rig...

PS... I will not help you DIY via this forum, please don't ask.

[CreamyG31337]

I did some reading and it turns out a standard house breaker is either 15 or 20 amps, which mean  1800 watts or 2400 watts max.  It's best to not use more than 80% load, so you should use 1440watts or 1920watts at most.
How the hell are people having 4+ rigs in their house?

You're not understanding this at all. The 15-20 amp breakers are for a circuit like "bathroom" or "balcony" or "bedrooms" or "kitchen". Appliances like stove or dryer use 30-40 amps. Your house will have hundreds of amps total.

[BeerMan81]

I'm not talking about the price, I have a good deal on that.  I only pay 2.7cents per kw

I built a rig with 4 1080TI, 3 1080 and 1 1080ti (to test it out, preorder)

The rig runs great, and I was able to optimize each card individually in MSI Afterburner, but if I even power those bad boys at 85% I go over 1500watts  (using 80% gold EVGA power supplies) and blow the breaker.


I did some reading and it turns out a standard house breaker is either 15 or 20 amps, which mean  1800 watts or 2400 watts max.  It's best to not use more than 80% load, so you should use 1440watts or 1920watts at most.


How the hell are people having 4+ rigs in their house?

How much will it cost me to get an electrician out here and what should I be asking for?

Go to your circuit breaker and the one that is tripped will say 15 or 20A as you said. This is correct. 80% Max is also correct. Now, take note of the number of circuits. IE, you might have 5x 15A circuits and 2-3x 30A circuits. You will also have a Main circuit for the whole house. Each circuit is usually dedicated to a room or area, IE the kitchen is separate from your bedroom.

People get more rigs running by spreading out the load on different circuits.

If you are tripping, likely you are on 15A circuits. So, you should take one GPU out of your rig for safety reasons.

How did you get your 1500 watts number? Was that using software or a watt meter? If you are pulling 1500 watts using software that means you are around 13.6 amps (depending on your exact voltage) from your power supply, but because you are using a gold, it should only be 87% efficient. Which means that from the wall you would be pulling 15.6..POP! 

[cashen]

I have a dedicated 125 amp panel. Which means I can have 100 amps @ 240 volts or about 24kw

I will soon have;

10 X10s (4300 watts)
16 x a900s (3600 watts)
3 x Towers (600 watts)
22 x 1080 TIs (5500 watts)
40 x 1060s (5000 watts)

All this only totals to 19kw

I always run 1 larger AWG than required.

Also, i'm switching to all bitmain PSUs. They run so much cooler.

[Ferylero]

So much effort? Why, if you can use cloud mining?

[crocozino]

So much effort? Why, if you can use cloud mining?

because you will earn quite less
if you choose to "mine" there it will bring some money, yes, but forget about pumps and new coins
but there is all profit! when you sell your stash during the pump you may earn X5 from the current income - your cloud will take this margin forhimslef and pay you your standard income.
no. thank you!

[Darmold]

So much effort? Why, if you can use cloud mining?

because you will earn quite less
if you choose to "mine" there it will bring some money, yes, but forget about pumps and new coins
but there is all profit! when you sell your stash during the pump you may earn X5 from the current income - your cloud will take this margin forhimslef and pay you your standard income.
no. thank you!

That's right, but anyway I like those cards, fans, power supplies, miner programs...
It is very interesting to play with all those things

[kapipindot]

So much effort? Why, if you can use cloud mining?

One cloud-mining I've seen was Genesis mining, it offers a two-year contract worth 30$ for a 1MH/s, 869$ for 30Mh/s and 2799$ for 100Mh/s.

Now by using 869$ @ 30Mh/s and 2.07$ per day mining ethereum (rate from whattomine.com)

869$/2.07$ per day = 420 days to make ROI

365 days * 2 years = 730 days - 420 days = 310 days for profit

310 days* 2.07$ = 641$ profit for a two year contract

It maybe a good investment, no hardware/software troubleshooting and no electricity cost in mind just pure profit, give them the money and you wait for two years for your profit.
The only risk I see here is when genesis mining turns out to be another ponzi scheme which is unlikely, then they can take away all your investment.

But for me I will go with building a rig an then mine alts on my own.