http://www.ebay.com/itm/AC-Power-Cord-C13-to-C14-14-AWG-2-Grey-Lifetime-Warranty-/370989253263?pt=US_Power_Cables_Connectors&hash=item5660aec28f
Topic: Residential Limit 15amp or 20amp? - page 3. (Read 13189 times)
Do these pdu's need some kind of adapter on the inputs or what?
I just noticed the one i have (pictured) wont allow me to plug in my rig into those input slots. My rig uses standard atx- power supply. The end that plugs in into the wall or power has a round ground. Like this ...
Do i need special cables /adapter now to go from my power supply to connect to the inputs on the pdu?
I just noticed the one i have (pictured) wont allow me to plug in my rig into those input slots. My rig uses standard atx- power supply. The end that plugs in into the wall or power has a round ground. Like this ...
Do i need special cables /adapter now to go from my power supply to connect to the inputs on the pdu?
A few years back in the height of the foreclosure crisis, we each bought nifty-fifties ranch style homes with basements. We moved the furnace/AC and hot water tanks out of the basements to ground floor or attic locations, leaving the entire basements essentialyl free span except for the beam supporting posts. This was not originally done with crypto mining in mind but it is going to work out well for it.
About three minutes after the inspector signed off on the job I was busily running new circuits in preparation for mining as we are using these three locations for the upcoming mining farm offering; Lost Dutchman Mining.
About three minutes after the inspector signed off on the job I was busily running new circuits in preparation for mining as we are using these three locations for the upcoming mining farm offering; Lost Dutchman Mining.
LostDuchman, Do you have any pics of your mining farm?
Also, What's the meaning behind the name? Any nod to mythical "Lost Duchman Mine" in California, or Arizona, or Colorado??? (Where eve they claim it is now...) Do you prospect with the GPAA?
Thanks for entertaining me!
Woodser
Thank you,but I'm an A/C installer & have been for over 8 years,an electrician for 4 years before that.
As an example,8 AWG is very common here in florida for 5 ton/10kw air handlers.Normal draw is 48-52 amps at start up.Never had an issue with well over 1000 installs
It's good that it under rates the amperage though,better safe than sorry
As an example,8 AWG is very common here in florida for 5 ton/10kw air handlers.Normal draw is 48-52 amps at start up.Never had an issue with well over 1000 installs
It's good that it under rates the amperage though,better safe than sorry
Really? You have a 5ton ac that starts at 52 amps. The 5 tonners I install pull 150+ at startup, However the rla is 29.2 amps x 1.25 is 36.5 amps and 8 gauge wire is appropriate for that.
They aren't underrated, that is code. A 12 gauge wire will carry 100+ amps, It will just get really hot. The code is calculated based on safe temperature for the wire and the insulation around it.(I thought you were an electrician? You should know this!) Also circuits are not sized on startup loads, A single phase psc motor like a refrigeration compressor will draw its lra when it starts, but that is only for a few seconds. The circuit is designed on rla.
Thank you,but I'm an A/C installer & have been for over 8 years,an electrician for 4 years before that.
As an example,8 AWG is very common here in florida for 5 ton/10kw air handlers.Normal draw is 48-52 amps at start up.Never had an issue with well over 1000 installs
It's good that it under rates the amperage though,better safe than sorry
As an example,8 AWG is very common here in florida for 5 ton/10kw air handlers.Normal draw is 48-52 amps at start up.Never had an issue with well over 1000 installs
It's good that it under rates the amperage though,better safe than sorry
Well,then post the correct info
Show me where I am so far off.
Gladly,
2011 NEC Table 310.15(b)(16)
60 degree column
14awg 15amp
12awg 20amp
10awg 30amp
8awg 40amp
6awg 55amp
4awg 70amp
3awg 85amp
2awg 95amp
1awg 110amp
I am not going to calculate the watts, For any one interested, take amperage x voltage x 0.8 to get your total watts for a constant load.
A lot of good advice here 
BUT,I didn't see any mention of AWG amp limits mentioned:
Same amp limits @ 120 volt or 220 volt.
14 AWG=15 amps or 120 volt 1800=watts-20%=1440 watts useable/220 volt=3300 watts- 20%=2640 watts useable
12 AWG=25 amps or 120 volts 3000=watts-20%=2400 watts useable/220 volt=5500 watts-20%=4400 watts useable
10 AWG=40 amps or 120 volt 4800=watts-20%=3840 watts useable/220 volts=8800 watts-20%=7040 watts useable
8 AWG=60 amps or 120 volt 7200=watts-20%=5760 watts useable/220 volts=13200 watts-20%=10560 watts useable
Get some 6 inch pieces of different gauge wire from home depot & pull the cover off the breaker panel & just hold a piece of sample wire near the wire going into the breaker until you have a match.
DO NOT TOUCH ANY WIRES OR OTHER PARTS,YOU MAY GET SHOCKED.Just a CYA
THESE ARE ESTIMATES,CHECK WITH AN ELECTRICIAN FIRST!!!!!
BUT,I didn't see any mention of AWG amp limits mentioned:
Same amp limits @ 120 volt or 220 volt.
14 AWG=15 amps or 120 volt 1800=watts-20%=1440 watts useable/220 volt=3300 watts- 20%=2640 watts useable
12 AWG=25 amps or 120 volts 3000=watts-20%=2400 watts useable/220 volt=5500 watts-20%=4400 watts useable
10 AWG=40 amps or 120 volt 4800=watts-20%=3840 watts useable/220 volts=8800 watts-20%=7040 watts useable
8 AWG=60 amps or 120 volt 7200=watts-20%=5760 watts useable/220 volts=13200 watts-20%=10560 watts useable
Get some 6 inch pieces of different gauge wire from home depot & pull the cover off the breaker panel & just hold a piece of sample wire near the wire going into the breaker until you have a match.
DO NOT TOUCH ANY WIRES OR OTHER PARTS,YOU MAY GET SHOCKED.Just a CYA
THESE ARE ESTIMATES,CHECK WITH AN ELECTRICIAN FIRST!!!!!
The wire ampacity was mentioned, however the wire comparison was not because it isn't relevant to the topic. Also your information is incorrect so your not really helping anyone
Well,then post the correct info
Show me where I am so far off.
A lot of good advice here
BUT,I didn't see any mention of AWG amp limits mentioned:
Same amp limits @ 120 volt or 220 volt.
14 AWG=15 amps or 120 volt 1800=watts-20%=1440 watts useable/220 volt=3300 watts- 20%=2640 watts useable
12 AWG=25 amps or 120 volts 3000=watts-20%=2400 watts useable/220 volt=5500 watts-20%=4400 watts useable
10 AWG=40 amps or 120 volt 4800=watts-20%=3840 watts useable/220 volts=8800 watts-20%=7040 watts useable
8 AWG=60 amps or 120 volt 7200=watts-20%=5760 watts useable/220 volts=13200 watts-20%=10560 watts useable
Get some 6 inch pieces of different gauge wire from home depot & pull the cover off the breaker panel & just hold a piece of sample wire near the wire going into the breaker until you have a match.
DO NOT TOUCH ANY WIRES OR OTHER PARTS,YOU MAY GET SHOCKED.Just a CYA
THESE ARE ESTIMATES,CHECK WITH AN ELECTRICIAN FIRST!!!!!
BUT,I didn't see any mention of AWG amp limits mentioned:
Same amp limits @ 120 volt or 220 volt.
14 AWG=15 amps or 120 volt 1800=watts-20%=1440 watts useable/220 volt=3300 watts- 20%=2640 watts useable
12 AWG=25 amps or 120 volts 3000=watts-20%=2400 watts useable/220 volt=5500 watts-20%=4400 watts useable
10 AWG=40 amps or 120 volt 4800=watts-20%=3840 watts useable/220 volts=8800 watts-20%=7040 watts useable
8 AWG=60 amps or 120 volt 7200=watts-20%=5760 watts useable/220 volts=13200 watts-20%=10560 watts useable
Get some 6 inch pieces of different gauge wire from home depot & pull the cover off the breaker panel & just hold a piece of sample wire near the wire going into the breaker until you have a match.
DO NOT TOUCH ANY WIRES OR OTHER PARTS,YOU MAY GET SHOCKED.Just a CYA
THESE ARE ESTIMATES,CHECK WITH AN ELECTRICIAN FIRST!!!!!
The wire ampacity was mentioned, however the wire comparison was not because it isn't relevant to the topic. Also your information is incorrect so your not really helping anyone
A lot of good advice here
BUT,I didn't see any mention of AWG amp limits mentioned:
Same amp limits @ 120 volt or 220 volt.
14 AWG=15 amps or 120 volt 1800=watts-20%=1440 watts useable/220 volt=3300 watts- 20%=2640 watts useable
12 AWG=25 amps or 120 volts 3000=watts-20%=2400 watts useable/220 volt=5500 watts-20%=4400 watts useable
10 AWG=40 amps or 120 volt 4800=watts-20%=3840 watts useable/220 volts=8800 watts-20%=7040 watts useable
8 AWG=60 amps or 120 volt 7200=watts-20%=5760 watts useable/220 volts=13200 watts-20%=10560 watts useable
Get some 6 inch pieces of different gauge wire from home depot & pull the cover off the breaker panel & just hold a piece of sample wire near the wire going into the breaker until you have a match.
DO NOT TOUCH ANY WIRES OR OTHER PARTS,YOU MAY GET SHOCKED.Just a CYA
THESE ARE ESTIMATES,CHECK WITH AN ELECTRICIAN FIRST!!!!!
BUT,I didn't see any mention of AWG amp limits mentioned:
Same amp limits @ 120 volt or 220 volt.
14 AWG=15 amps or 120 volt 1800=watts-20%=1440 watts useable/220 volt=3300 watts- 20%=2640 watts useable
12 AWG=25 amps or 120 volts 3000=watts-20%=2400 watts useable/220 volt=5500 watts-20%=4400 watts useable
10 AWG=40 amps or 120 volt 4800=watts-20%=3840 watts useable/220 volts=8800 watts-20%=7040 watts useable
8 AWG=60 amps or 120 volt 7200=watts-20%=5760 watts useable/220 volts=13200 watts-20%=10560 watts useable
Get some 6 inch pieces of different gauge wire from home depot & pull the cover off the breaker panel & just hold a piece of sample wire near the wire going into the breaker until you have a match.
DO NOT TOUCH ANY WIRES OR OTHER PARTS,YOU MAY GET SHOCKED.Just a CYA
THESE ARE ESTIMATES,CHECK WITH AN ELECTRICIAN FIRST!!!!!
Thanks for the quick reply. I appreciate it repairguy 
Thank you all for the info. Very valuable for noobs like myself.
Just to make sure I understand it correctly; I run dedicated 30 amp 240v w/10 awg line with l6 30p outlet. I buy pdu rated 30 amp with l6 30p (24 de rated ) like the APC 9571A and I am good for 5k watt right?
My circuit breaker has 2 spaces empty next to each other but I am not sure what is the total power coming in to the house.
Also, standard ATX psu in the US is rated to use 240v ? I know that all my three rigs are hooked to 120v outlets right now.
Just to make sure I understand it correctly; I run dedicated 30 amp 240v w/10 awg line with l6 30p outlet. I buy pdu rated 30 amp with l6 30p (24 de rated ) like the APC 9571A and I am good for 5k watt right?
My circuit breaker has 2 spaces empty next to each other but I am not sure what is the total power coming in to the house.
Also, standard ATX psu in the US is rated to use 240v ? I know that all my three rigs are hooked to 120v outlets right now.
5.76kw, and two spaces next to each other usually means you can get 240v. Some GE panels have 2 spaces before it changes legs. If you install the breaker and it shows ~240v between poles you are good to go, If it shows 0v then rearrange the breakers to move it down one space.
The power supply may have a switch on the back to switch it from 120v to 240v. If it doesn't have a switch look at the label and check that the voltage range goes to 240v and hook it up.
Thank you all for the info. Very valuable for noobs like myself.
Just to make sure I understand it correctly; I run dedicated 30 amp 240v w/10 awg line with l6 30p outlet. I buy pdu rated 30 amp with l6 30p (24 de rated ) like the APC 9571A and I am good for 5k watt right?
My circuit breaker has 2 spaces empty next to each other but I am not sure what is the total power coming in to the house.
Also, standard ATX psu in the US is rated to use 240v ? I know that all my three rigs are hooked to 120v outlets right now.
Just to make sure I understand it correctly; I run dedicated 30 amp 240v w/10 awg line with l6 30p outlet. I buy pdu rated 30 amp with l6 30p (24 de rated ) like the APC 9571A and I am good for 5k watt right?
My circuit breaker has 2 spaces empty next to each other but I am not sure what is the total power coming in to the house.
Also, standard ATX psu in the US is rated to use 240v ? I know that all my three rigs are hooked to 120v outlets right now.
Maybe home builders should get on it. We have dining rooms, powder rooms, baby rooms, reading rooms....
I think it is time they put in "computer data center rooms", with 100A panels, independent AC, home automation panels etc.
I think it is time they put in "computer data center rooms", with 100A panels, independent AC, home automation panels etc.
Lol, Houses are build with the cheapest material by the lowest bidder. That isn't likely.
Maybe home builders should get on it. We have dining rooms, powder rooms, baby rooms, reading rooms....
I think it is time they put in "computer data center rooms", with 100A panels, independent AC, home automation panels etc.
I think it is time they put in "computer data center rooms", with 100A panels, independent AC, home automation panels etc.
I was hoping to find and electrician friend of mine but he comes up missing 3-5 months at a time because he has a serious gambling problem. He has a thing for Pai Gow.. I may call his wife to see if she can hunt him down for me. Last time i got him in trouble so im being patient..
Thanks for the price guide btw! Good to know what im dealing with!
Thanks for the price guide btw! Good to know what im dealing with!
Holy crap! $3k! I wasnt expecting that..
I hope just adding a sub panel is cheaper.
Not sure about my water heater.. ill look in the morning.
Yep, It may be different where you live, but the electricians here were smart. Electrical work is the only protected construction trade. Anyone can decide one day they want to install gas lines and they are in business, but not electrical. It ruins competition. In all fact, that 2900 install has maybe 800 in materials and 10 hours of labor. It is bullshit, but you don't have a choice.
Panel change out here with a new 200amp service runs 2500-2900. Could be more if your installation is a pain in the ass. Depending on the brand and model of panel you have you could use some tandem breakers to free up some space.
Do you have an electric hot water heater? Is it in the basement? Replace the breaker feeding your water heater with a 60amp to feed a sub panel, then feed your water heater from the sub panel.
You could do the same with any of the circuits in your house, the water heater is usually the handiest 240v to access in the basement.
Do you have an electric hot water heater? Is it in the basement? Replace the breaker feeding your water heater with a 60amp to feed a sub panel, then feed your water heater from the sub panel.
You could do the same with any of the circuits in your house, the water heater is usually the handiest 240v to access in the basement.
Holy crap! $3k! I wasnt expecting that..
I hope just adding a sub panel is cheaper.
Not sure about my water heater.. ill look in the morning.
Panel change out here with a new 200amp service runs 2500-2900. Could be more if your installation is a pain in the ass. Depending on the brand and model of panel you have you could use some tandem breakers to free up some space.
Do you have an electric hot water heater? Is it in the basement? Replace the breaker feeding your water heater with a 60amp to feed a sub panel, then feed your water heater from the sub panel.
You could do the same with any of the circuits in your house, the water heater is usually the handiest 240v to access in the basement.
Do you have an electric hot water heater? Is it in the basement? Replace the breaker feeding your water heater with a 60amp to feed a sub panel, then feed your water heater from the sub panel.
You could do the same with any of the circuits in your house, the water heater is usually the handiest 240v to access in the basement.
So here's where I wound up. I have a contractor coming later this week to run a 50 amp circuit to a new sub panel in the basement. In that panel he'll put a 30A 240 and 20A 120.
I ordered this for the PDU: APC AP7941 Rack PDU. There was a seller with a used one for $50 (+15 shipping) on Amazon. I like the fact I can view the amps drawn and manage it through a web interface.
Then I'll have two of these that will go from the PDU to the machines: Tripp Lite ISOBAR4/220 Isobar Surge Protector Metal 230V 4 Outlet. So each will have 2 machines on it (4 miners total).
This should let me overclock (if possible), from out of the box 1050W to +20% = 1260W / 240V = 5.25 amps * 4 machines, 21 amps out of 24A sustained rating on 30A circuit. That's only if I can get them all OCd, but at least the headroom's there.
This will leave me with a 20A circuit if I need a cooler or for expansion. Thanks for the help here, let me know if I'm blowing it somewhere!
I ordered this for the PDU: APC AP7941 Rack PDU. There was a seller with a used one for $50 (+15 shipping) on Amazon. I like the fact I can view the amps drawn and manage it through a web interface.
Then I'll have two of these that will go from the PDU to the machines: Tripp Lite ISOBAR4/220 Isobar Surge Protector Metal 230V 4 Outlet. So each will have 2 machines on it (4 miners total).
This should let me overclock (if possible), from out of the box 1050W to +20% = 1260W / 240V = 5.25 amps * 4 machines, 21 amps out of 24A sustained rating on 30A circuit. That's only if I can get them all OCd, but at least the headroom's there.
This will leave me with a 20A circuit if I need a cooler or for expansion. Thanks for the help here, let me know if I'm blowing it somewhere!
Man nice pdu!
i had i guy come out and when he opened the door to my panel it sparked everywhere and the power went out! Turns out i had a loose breaker which had defective coupler or what ever hold its into place...
After he opened it he said there is not room for any more breakers and i would need a sub panel or a new panel.
All in all i lost a 15 amp breaker and all that was on there got moved to a 20amp breaker that the garage door was running on. He said the Oven was on a 50amp and i looked at him and he started laughing! He said i should probably talk the other people in the house before i have him haul the oven away! LOL
He was just a contractor that was in the neighborhood doing me a solid so now at least i know i need a new panel or a sub panel.
PDU and outlets just came.. Got the 10guage line too.. Just a bit brick walled with this panel issue. I gotta find out the costs of swapping to larger panels or adding a sub. Anyone know?
By the way i found i have 100-125 amp service by calling the power company!
Wiring heats up, and copper's conductivity actually DECREASES as temperature is increased, leading to more heating up, feedback loop = fire.
So, like other people on this thread have said, do not run more than 80% of rated power draw continuously.
If the circuit was built right, everything up to spec, it should be able to handle it, but, we all know that residential houses are all built by the lowest bidder, with the cheapest components available.
So, running more than 1100 W on a 15 A 120 V circuit, you're asking for trouble.
I now I ran into that problem also, which is why I sold off some mining gear. I simply did not have enough power to run it safely, and the extension cords from other circuits in the house were getting really annoying.
So, like other people on this thread have said, do not run more than 80% of rated power draw continuously.
If the circuit was built right, everything up to spec, it should be able to handle it, but, we all know that residential houses are all built by the lowest bidder, with the cheapest components available.
So, running more than 1100 W on a 15 A 120 V circuit, you're asking for trouble.
I now I ran into that problem also, which is why I sold off some mining gear. I simply did not have enough power to run it safely, and the extension cords from other circuits in the house were getting really annoying.
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