Quote from: Bogart on August 31, 2017, 03:19:05 PM

Quote from: CryptoCrane on August 31, 2017, 01:29:17 PM

Quote from: thiec on August 31, 2017, 06:06:15 AM

I just found out that there are 2 type PSU for L3+

* APW3++ will cost 105 USD
* APW3++ for L3+ will cost 115 USD

The different only the connector, 5 pair (10 connector) and 9 pair (18 connector)

Its cost wise if we choose 9 pair since its could power up 2 L3+ at 220V,
BUT.. i need another view or opinion such as temp, power and effect to the L3+ for long run,

At 220v, each L3+ uses 750 watts (more efficient) and the APW3++ is definitely capable of supporting 100% load 24/7 (unlike consumer grade PSUs). I would highly recommend saving money and going with the 18 connector version if you already have 220v power. We've been running a couple sets in this configuration for months without issue. Total power draw from the wall is 1500w per pair.

I watched your video where you measure the power consumed by an L3+ on 120V and on 220V (240V?) using a Kill-a-watt P3 P4400 power meter.

I tried to do the same thing with my Kill-a-watt P3 P4400 a few years ago. I noticed that on the label it's only rated for up to 125V, and when connected to 240V, it reported the frequency as 30Hz. After seeing that I didn't trust any of the other numbers it reported when connected to a 240V source.

Good catch, I didn't even realize that the P4400 wasn't rated for 240v until someone else mentioned it in the YouTube comments. It appears to work and I've re-tested with a digital clamp meter that is rated up to 400v and got the same results. The frequency does show 30Hz, which makes me wonder how it's able to get the wattage properly. ¯\_(ツ)_/¯

Quote from: usao on August 31, 2017, 03:05:08 PM

Quote from: BenRickert on August 31, 2017, 02:29:05 PM

Quote from: usao on August 31, 2017, 02:22:59 PM

Quote from: koljach on August 31, 2017, 01:51:58 PM

Hey guys, got one few days ago but wondering something. Earlier in the thread there was talk about power cords and i am not sure what to do.

I got 1600W psu (unfortunately couldnt get my hands on original Bitmain's so had to buy http://apluspower.manufacturer.globalsources.com/si/6008835682132/pdtl/Switching-power/1152345293/1680W-Power-Supply.htm) and 1 antminer l3+. So my question is, will regular cable for computer psu (10A 50-60 hertz) suffice to power up what i have, or will i have to get some stronger cable, and if yes, which one exactly?

Thanks in advance for answers!

2 answers here:
1) L3+ draw is about 750W, so at 120V that's approx 6.5 A, so there is absolutely no problem drawing that from a standard 120V 15A outlet.
2) To be "SAFE", consider that the PSU can draw up to 1680W, which at 120V is 14A. That's right at the limit of the available power from a standard 120V 15V outlet. Consider that most PSU's are rated around 80%, so if you divide 14A by 0.80, you get 17.5A which is overloaded for that circuit.

So, a single L3+ is fine on a 120V 15A circuit, The wattage of the PSU is a max rating, doesn't mean it will actually draw 1680W if the load is only 750W then it will draw 750W and not 1680W.
You could have a 10000W PSU and if the "load" on the PSU is 750W then that's what you will see at the wall outlet (don't forget the 80%, so more like 925W max). Still well within a single standard US circuit limit.

The L3+ only draws 750 on a 205 0r above voltage. It is 800 minimally at 110v.

Ok, then still good for a single L3+ on a standard 120V 15A circuit. The 800W draw along with an 80% efficient PSU is under 8.5A out of a 15A circuit.

Keep in mind that this PSU mentioned by koljach is not compatible with 120v. The link shows that the AC input ranges from 176v to 264v.