Cable, Wiring, and Plugs - Options for High Ampage?

[Ivanko88]

In the UK, average double plug socket is rated for 13Amp(max 3500watts), and Ring circuits average 30-32Amp(max 7500watts)

Because of this, if we plug 2-3 miner whose PSU is 3000watts, it seems will cause safety problems


What do you guys do?

Run dedicated cable direct from consumer unit?
have special plug sockets for miners?

 

[safar1980]

Are you sure about the quality of the cable to the 13A socket? From the consumer unit, you need to lay a separate cable, a separate cable into the room where your miners are located, and then install sockets. From each 13-16A socket, I consume no more than 2000 watts.

[Ivanko88]

Are you sure about the quality of the cable to the 13A socket? From the consumer unit, you need to lay a separate cable, a separate cable into the room where your miners are located, and then install sockets. From each 13-16A socket, I consume no more than 2000 watts.

but some miners use 3000w each...

[philipma1957]

Are you sure about the quality of the cable to the 13A socket? From the consumer unit, you need to lay a separate cable, a separate cable into the room where your miners are located, and then install sockets. From each 13-16A socket, I consume no more than 2000 watts.

but some miners use 3000w each...

and that is why you need at least a stand along 20amp circuit and socket to mine with

L7
s19

a1166
a1246

as all do 3200 to 3400 watts.

derate 20amp to 16 amp 24/7/365 and 240 x 16 = 3840 watts

but if your voltage drops on a brown out to 208  208 x 16 = 3328 which may trip the 20 amp circuit with constant run

202 volts x 16 = 3232 and your 20 amp  breakers will trip

so a 20 amp may be good  for the 4 miners above on a hot summer night.

My main farm can sag to 190 volts so I use 30 amp circuits and down clock in the summer.

[Ivanko88]

so a 20 amp may be good  for the 4 miners above on a hot summer night.

My main farm can sag to 190 volts so I use 30 amp circuits and down clock in the summer.

if we have 8 x 3500w miners

From the consumer unit have 8 x 20amp breakers with there own dedicated cable from each?


Also, can you explain this

but if your voltage drops on a brown out to 208  208 x 16 = 3328 which may trip the 20 amp circuit with constant run

202 volts x 16 = 3232 and your 20 amp  breakers will trip

if the voltage drop to 202 volts(from 230/240), how will this cause the breaker to trip? Less voltage means less amps, so it should definitely not trip

[philipma1957]

so a 20 amp may be good  for the 4 miners above on a hot summer night.

My main farm can sag to 190 volts so I use 30 amp circuits and down clock in the summer.

if we have 8 x 3500w miners

From the consumer unit have 8 x 20amp breakers with there own dedicated cable from each?


Also, can you explain this

but if your voltage drops on a brown out to 208  208 x 16 = 3328 which may trip the 20 amp circuit with constant run

202 volts x 16 = 3232 and your 20 amp  breakers will trip

if the voltage drop to 202 volts(from 230/240), how will this cause the breaker to trip? Less voltage means less amps, so it should definitely not trip

okay a 3500 watt miner wants 3500 watts it not underclocked.

so 3500/240 = ? amps

and 3500/208 = ? amps

the voltage drop from 240 to 208 does ? to amps

I know the answer to those ?  

The thing you need to understand is a 3500 watt machine sucks at the power line until the line provides 3500 watts. unless you set a lower clock on the miner and demand less watts.

the miner says give me my 3500 watts.

first question mark is 14.58 amps and a 20 amp breaker should do the trick without underclock.
second question mark is 16.82 amps and a 20 amp breaker may pop if you run 24/7
third question mark is amps go up.

think of the miners demand of 3500 watts like a pool to be filled

so a 1 inch hose with 240 pounds (volts) of water pressure takes less time (amps) to fill the pool

a 1 inch hose with 208 pounds (volts) of water pressure takes more time (amps) to fill the pool


the things that vary are volts and amps not watts

or in the analogy  of the pool. the water pressure and the time vary and the pool size is constant.

if you have 8 pieces of 3500 watt gear with 20 amp separate breakers you may have to underclock the gear to 3000 watts in the summer. it simply depends on the power company giving you a dead solid 220 volts or more all summer long.

oh 3500/220=? amps 😀

15.9 amps is the answer which should work.


now i did not mention that 20 amp circuits should have 12 gauge wire/3.3mm2
and 30 amp circuits should have 10 gauge wire/5.3mm2

but that is another story.


basic code of usa above but should keep you safe.

also if you do 10 gauge wire and 30amp breakers.

you could do gear upgrades if they make units like this link standard.


the unit below uses 5300 watts and could be the future

https://shop.bitmain.com/product/detail?pid=00020220307155532760z9tPWK4w06B6

[safar1980]

look at this mining rack
This rack is for asics that consume no more than 2500 watts, but you can ask electricians you know to do the same for more powerful asics. It will cost less.These racks are installed at industrial facilities where engineers are constantly on duty.But for a private house, more electrical safety is needed.