[RE-wrenches] SunBandit Hybrid Solar Water Heater

[Dave Click]

There are similar systems available to this one. I think you mean that 
the inverter is UL 1741, but the system is not grid-interactive. 
Stand-alone inverters can be listed to 1741 as well.

IIRC, when I saw them at SPI 2012 they were doing everything in DC. They 
may have switched to AC so they could use romex rather than EMT?


On 2013/10/3 16:13, Jason Szumlanski wrote:
> Anyone else getting inundated with SunBandit Hybrid Solar Water Heating
> System marketing emails? Any first impressions? Here are my initial
> thoughts:
>
> Pros - provides hot water in utility outages, no interconnection
> hassles, possibly easier permitting hurdles, eliminates moving parts in
> active SDHW systems
> Cons - no grid-tie, any excess energy produced is wasted, AHJs won't
> know how to categorize equipment for permitting and may charge for solar
> water heating and PV permits and inspections
>
> I haven't dug too deep, but one strange thing I think I saw on a spec
> sheet was that the "micro-AC Grid" (aka microinverter) is UL 1703. If
> that is the case, how does the PV continue to provide water heating in a
> utility outage? What I really don't understand is why there is a need
> for a microinverter at all? Why not just use a DC element? I guess a
> microinverter, despite minor efficiency losses, is cheaper than a load
> controller.
>
> Jason Szumlanski
> Fafco Solar
>
>
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