Quote from: samborambo on March 27, 2013, 11:17:50 AM

Quote from: jubalix on March 27, 2013, 10:43:58 AM

Quote from: samborambo on March 27, 2013, 09:26:38 AM

FINALLY out of newbie exile...

Australia is 230VAC single phase, same as here. Europe is 240V. 63A is the standard pole fuse on a domestic supply here in New Zealand and probably most 220V-240V countries. Loosely speaking, this gives most customers 15kVA of supply in ideal circumstances. In fact, even if you have a 63A pole fuse, your switchboard fuse is likely to be 40A to grade properly with the pole fuse. This give a practical upper limit of 9.6kVA

Electricity supply availability is a concern, depending on the actual fusing circuit breakers, CoinHoarder has. I'm assuming each rig is around 800W = 5600W or 5.6kVA, assuming unity power factor. If CoinHoarder's house is limited to 9.6kVA, boiling the kettle when the light are on will pop the fuse.

More of a concern, though, is dirty power. Yep, I deal with power quality investigations on a regular basis. In short, if a customer's appliance blows up, we (network company) have no evidence that the fault was caused by our network. In actual fact, it probably was but we have to tell the customer to make an insurance claim on the appliance (or "tough luck"). Advanced electronic logging meters will change all that in the near future. Meanwhile, say a voltage spike fries our mining rigs: Even if CH proves it was a network fault, CH can't make an effective warranty or insurance claim. It'd be at least a month or more before the rig(s) are assessed, new rigs built, tested, shipped and commissioned.

I think the idea of co-location was mentioned earlier. I had a quick look at facilities in the states offering 1/4 of a rack for $400/month. That's a pittance for round-the-clock care, clean power, physical security, gobs of bandwidth and backup generators. CH can still get his admin premium. I just want to mitigate risk where feasible to do so.

I guess this is a conversation we'll have over the next month or so before the rigs arrive. Looking forward to making an actual contribution to the network, instead of just speculating.

Sam.

Rack space rent maybe a good idea....but depends on the sort of insurance they offer/cost

Australia is 240V

also 3 phase is readily available, and I know quite a few houses have it.

Including ones I have lived in, the 9.6 KVA sounds realisitc.

I think that CoinH, unless he has an upgraded power supply may be in for a bit of "shock"

but I hope not

he seems to be running a LT farm, and these chew power and it looks like he does not do things by halves

He also seems to have 2 separate circus in his house for power

so he should be able to use one dedicated to ASICS and the other for house hold

Australia changed from 240V to 230V in 2000. Sorry to be pedantic! Roll Eyes

I'm confused about the two independent circuits. I'm not sure about Australia but in NZ, buildings are only allowed one point of supply, for safe isolation in the event of a fire, etc.

Yep, running 3 phase or upgrading the existing protection on a single may be options.

you may well be right...why would the do that 240 = less energy transmission losses (ok just a little per house but multiply by 1 million houses)