Quote from: atadro on January 21, 2014, 11:01:12 AM

Quote from: Searing on January 21, 2014, 07:01:01 AM

Quote from: proclivity on January 20, 2014, 03:15:49 PM

Quote from: Searing on January 20, 2014, 02:08:01 PM

Quote from: Airwhale on January 20, 2014, 01:31:37 PM

My understanding of the neptune was that it was going to draw 2500w or more, and thus is unsuitable for 20 amp, 120v power lines. I'm not sure where to get a power supply that is greater than 1600w, and I've always been cautious of having two power supplies on one device, in case one fails and the other does not. (electronic devices don't generally like to be half powered... it fries them!) How would sourcing your own power supply work with such a device?

+1 for the suggestion to house the power supply internally. I (and I am sure many others in the US) plan on hosting this in a data center, so having it something that is entirely rack mountable makes things so much easier.

yes it would be nice to get if a 220v standard 20amp 2pole breaker line will work...(sigh ...i suppose I could get a gas clothes dryer and stove.....)...the smart thing to do would be to upgrade my 100amp panel to 200 amps...

anyway us USA types need to know if we have to get a 220v 30amp line.....because right now is the time you get a hold of and schedule an appointment with an Electrican (dead of winter) if you wait till spring they will all be locked up with commercial work unless you set such up early (my experience anyway)

but again in a "module format" like was done with the Jupiter....you could "split" and have 2 power supplies hashing each or 2 to 4 or whatever cores per side each...i think? that is being done with cointerra?

it probably would look like 2 units hashing on a pool this seperation...but what the heck if you could use TWO Power suppllies on TW0 dedicated to the Neptune only regular 220v line would be worth it...and most of us could do that ourselves on our current panels *usa*

not to mention if one circuit or module or whatever stops working (like on the jupiter) you can continue to hash till RMA arrives

my 2c worth

Searing

+1 on space in the case!

Searing I'm running 3 Jups on a 240V circuit here in the USA, I highly recommend making the move to 220/240V if you're going to keep them in a residential setting.. and don't skimp on wire gage!

ah but that is my question power/volts=amps so 2500/120v = 20.83 amps assuming 2500w unit (i've heard 3000w per neptune)..so....if that is the case I will need a 220v 30amp and corresponding wire etc (the same circuit as my elec stove/ove uses or my elec clothes dryer) ..that is unlikely to fly with a 100amp panel even though i only have for heat a boiler (small pump no big deal) and no house wide air conditioning etc....now if KNC comes back and says it is 2150w or some such I can do as you have above...but i'm thinking from what I heard ..if i remember correctly..in europe it is 240/30 amp so it is either a gas stove/oven and gas clothes dryer in my future ...or i get a 200amp at least (maybe bigger for kicks 250amp) panel and re-do feed to the house ..which my guess would be 2k to 2.5k (i'm in town only way they turn power back on after such a project is if lincensed electrian sighns off he did the work and that the inspector also has signed off on it.takes some creative organization to get both the electrican and the insprector there the same day..and that assumes the inspector is happy....pain in the butt

anyway my concerns on clarification....would be nice to get this info ASAP so i can arrange now for an electrician in march sometime before they are fully backlogged

anyway if the above is incorrect on my calculations please clarify this post ...just me kibitzing on the above in that i have not chased any other info down yet the friend who had a service put in and his experiences on all this for a new service...also my math may be incorrect above too for all i know

Searing

IMO if you have only ordered 1, without intent to expand, you could just add a 20A 240V circuit to your panel for the Neptune. If you need to free up 2 spots for the new breaker you can get tandem breakers for existing 120V 15A or 20A circuits.

That being said now is the time to decide if you want to 'go big'. Upgrading service (or adding another) can be fairly quick and cheap depending on the situation. I recently had 2 additional separate 100A 240V 1P services pulled into my office (northeast US) for $3400 including everything from the meters to the 8 outlets. You won't know though until you get an electrician to give a look - and try to get one with experience with your town/city as each has their own rules and quirks.

still confused p/v=amps 2500w/120v=20.83..i was under the impression a neptune was 2500 to 3000 watts? so in that case i'd need a 30amp circuit right? or is 2500w too high?