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Topic: free electric for 26 months / new to mining what would you do? (Read 107 times)

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If your main power line is max. 100A, you should try to avoid going over about 80A of continuous usage, ballpark figures.

Let's see: 80A times 240V that's somewhere around 19.2kW and about 460kWh per day if you use it all day long. That is some serious power budget and you have to keep it safe. At the currents that beefy mining rigs drain, every connection is a potential fire hazard. You will see how hot cables and power connectors can get.

I don't ask how such an amount of energy could be for free. Frankly, someone has to pay for that and it's a lot. You say, it's free for you, you do yours, none of my business.

If you run this amount of energy through mining rigs, you should not forget, that basically all of this energy turns to heat, whatever cooling you use, you must get rid of roughly 460kWh heat if you go to the limits. Immersion cooling might be more compact, but you still have to get rid of 460kWh of heat out of it. And the cooling will eat some part of your energy budget.

Don't try to start big at once as you're no way experienced in the mining business.

Here's a mining profit calculator that can take difficulty rise into account (which many calculators foolishly don't, for whatever reasons): https://jblevins.org/btcmpc/

History shows that mining difficulty rises in the long run, your hash power usually not, unless you add gear, but that means, more investment, longer periods for ROI. And Bitcoin is volatile, too. Atm, all is nice and shiny. It won't stay that way all the time. Oh wait, you have a limited "free" energy budget, you can't add gear past it. So, diminishing returns are inevitable for you. Take that into account!

Oh... and don't forget: next halving somewhere around end of March, beginning of April 2028 (currently estimated to April 14th, 2028 but it will shift to earlier days).



Really really appreciate the reply.

Yes i have been going back and forth with everything in my head and i am calculated out.

I do have a number of new radiators from big vehicles that were never used. I have a friend who can also tig weld, so i feel an A team build coming on.

That is what i was thinking, if its a 100A feed, go no higher than 80AMP continuous maximum to leave a circa 20AMP open buffer .

I have an unlimited allowance for 2 years or so at the present time part of a fixed agreement . i appreciate that energy has to come from somewhere, and we all have to pay our way on these things.

The only way it is viable for me is with the energy for this 2 year period and make it count.

The rig i am targeting is the S21 XP 270TH, they are by no means 'cheap'. I am expecting one to arrive shortley and i guess i will learn the ropes on this one and expand as i go.

I was hoping to expand to 6 Rigs, however that does not seem likley given the power consumption, i will be limited to 5 along with the power consumption for the heat exchanger set up/pump etc

Would anyone happen to know the power draw continuous on the S21 XP 270th with the fans and if you remove the fans ?


I know i will have to work into my power figures the cooling requirement for pump/immersion heat exchanger/fan. At some point i will probably reroute the heat exchanger to a swimming pool rather than wasting more energy on an air source heat pump
hero member
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If your main power line is max. 100A, you should try to avoid going over about 80A of continuous usage, ballpark figures.

Let's see: 80A times 240V that's somewhere around 19.2kW and about 460kWh per day if you use it all day long. That is some serious power budget and you have to keep it safe. At the currents that beefy mining rigs drain, every connection is a potential fire hazard. You will see how hot cables and power connectors can get.

I don't ask how such an amount of energy could be for free. Frankly, someone has to pay for that and it's a lot. You say, it's free for you, you do yours, none of my business.

If you run this amount of energy through mining rigs, you should not forget, that basically all of this energy turns to heat, whatever cooling you use, you must get rid of roughly 460kWh heat if you go to the limits. Immersion cooling might be more compact, but you still have to get rid of 460kWh of heat out of it. And the cooling will eat some part of your energy budget.

Don't try to start big at once as you're no way experienced in the mining business.

Here's a mining profit calculator that can take difficulty rise into account (which many calculators foolishly don't, for whatever reasons): https://jblevins.org/btcmpc/

History shows that mining difficulty rises in the long run, your hash power usually not, unless you add gear, but that means, more investment, longer periods for ROI. And Bitcoin is volatile, too. Atm, all is nice and shiny. It won't stay that way all the time. Oh wait, you have a limited "free" energy budget, you can't add gear past it. So, diminishing returns are inevitable for you. Take that into account!

Oh... and don't forget: next halving somewhere around end of March, beginning of April 2028 (currently estimated to April 14th, 2028 but it will shift to earlier days).
brand new
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HI guys,

i am totally new to mining and i too was also baffled by the different calculations and rigs and working out what is possible and what is not.

I hope you dont mind me running past you my dilemma/opportunity.

for the next 26 months i know i have access to reliable circa 75/80amp 240v single phase power for no charge. I might be able to extend for another 12 months after the 26 month period.

I have a budget of around £6-8K perhaps a little more for hardware.

What do you think i should target with this? for maximum ROI. I know no bet is a safe bet but is it better to just stick with BTC?

I want to get all of the information together before taking the plunge and purchasing mining rig(S)

Would you have any idea of a realistic daily revenue in a pool ? and what pool do you think i should go for?

thanks for all

You can use this calculator to calculate how much you would earn by mining: https://www.asicminervalue.com/

Mining will increase in difficulty so if you don't have free electricity for a couple of years, it may not be profitable for you.
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[/quote]

- Swapping out: There's no easy way to do this once you purchase the rig, so look at purchasing a suitable rig. They all have their own unique complications to just be aware. Air cooled has issues with dust, hydro and immersion have issues with quality of water (and it generates some gunk that you need to drain from time to time). It's not a walk in the park unless you hire a pleb to maintain it for you. And then it's not cheap :-/


[/quote]

Excellent i need to put a wanted post up for a Pleb for maintainance!

thank you for your points it is very much appreciated i will look more at immersion
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thank you for your reply guys.

Yes it is pretty clear that 6K is not going to go anywhere for Hardware. I need to increase this to the budget to support 6 x 270HT (s21 xp) I guess i am looking at 24-30k GBP

Do any of you know if there is a significant current draw if you swap out the air cooling for water or immersion?

Also my other question i wanted to ask is , the power cable can support a maximum of 100amps/240v continuous.

If i needed to disable 1 or 2 mining rigs for a few hours each day, can i literally cut the power to them and then turn them back on when required. Will they just boot up / connect and continue on their hashing

or will i have to reconfigure their settings ?



- Swapping out: There's no easy way to do this once you purchase the rig, so look at purchasing a suitable rig. They all have their own unique complications to just be aware. Air cooled has issues with dust, hydro and immersion have issues with quality of water (and it generates some gunk that you need to drain from time to time). It's not a walk in the park unless you hire a pleb to maintain it for you. And then it's not cheap :-/

- Remember these have high power requirements and you need to ensure your wiring is able to handle the load. You may need to have a dedicated mains cable installed from your mains intake (where the big utility wires come in)

- Turn off / on - technically you can do that, but remember the cooling fans also turn off with it, so you may damage the ASIC chip if it's really hot and you turn it off this way. Safer to shutdown via the interface and important to let it cool to room temperature

- The settings should not be lost (unless you fried the internal storage), but the risk from high heat levels remains
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thank you for your reply guys.

Yes it is pretty clear that 6K is not going to go anywhere for Hardware. I need to increase this to the budget to support 6 x 270HT (s21 xp) I guess i am looking at 24-30k GBP

Do any of you know if there is a significant current draw if you swap out the air cooling for water or immersion?

Also my other question i wanted to ask is , the power cable can support a maximum of 100amps/240v continuous.

If i needed to disable 1 or 2 mining rigs for a few hours each day, can i literally cut the power to them and then turn them back on when required. Will they just boot up / connect and continue on their hashing

or will i have to reconfigure their settings ?

legendary
Activity: 3472
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Playbet.io - Crypto Casino and Sportsbook
That's the hard thing to do looking for a unit when investing in mining with free electricity.
I think you need to choose the most efficient and newer units because they're better than the old ones, but the problem is they're expensive. I don't think the current amount you have can afford it.

You better calculate everything You can also use this tool https://whattomine.com/asics and search for sha-256 and change the power cost to zero.
For ROI calculation then check this tool https://www.mycryptobuddy.com/BitcoinMiningCalculator

Also, read this: "First time/Small miner reference for getting started"
legendary
Activity: 2212
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I have a budget of around £6-8K perhaps a little more for hardware.
You have free electricity but things can change a lot in next few years and Bitcoin Mining Difficulty is always increasing.
I don't follow prices of ASIC miners but you could probably get a few of them and earn few bucks a day in Bitcoin.
Do the ROI math yourself.

What do you think i should target with this? for maximum ROI. I know no bet is a safe bet but is it better to just stick with BTC?
Probably better to stick with bitcoin.
Mining for small players is not very profitable these days, unless you are doing it long term, and if you are ready to take loses.

Would you have any idea of a realistic daily revenue in a pool ? and what pool do you think i should go for?
There are several different bitcoin mining calculators available online, but this are just estimates, not exact numbers.
Here is one example (select BTC):
https://www.asicminervalue.com/
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HI guys,

i am totally new to mining and i too was also baffled by the different calculations and rigs and working out what is possible and what is not.

I hope you dont mind me running past you my dilemma/opportunity.

for the next 26 months i know i have access to reliable circa 75/80amp 240v single phase power for no charge. I might be able to extend for another 12 months after the 26 month period.

I have a budget of around £6-8K perhaps a little more for hardware.

What do you think i should target with this? for maximum ROI. I know no bet is a safe bet but is it better to just stick with BTC?

I want to get all of the information together before taking the plunge and purchasing mining rig(S)

Would you have any idea of a realistic daily revenue in a pool ? and what pool do you think i should go for?

thanks for all
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