The scary thing here is in a time when we are supposed to be conserving, there are more people getting 320 and 400 amp services.
Surely that isn't Residential with a load like that, Greg?
I think the first mention of a 400-amp domestic mains I came across was almost 20 years ago when some bloggers (before the term even existed) built an extension to their Virginia farm house and installed several electric on-demand water heaters. Those beasts can go up to 27 kW in Europe and I think US models are even larger because US showers require considerably higher flow rates than European ones. Of course ours are three-phase and the UK/Ireland single-phase ones only go up to 9 KW.
