New video on rooftop solar apps with microinverters in the spotlight
Dave Angelini
Solar Expert Posts: 6,870 ✭✭✭✭✭✭
String Inverter company Fronius made this test to put pressure on microinverter companies. The String inverter market has been hit with lost sales and this was a pretty good test. It proves that electronics that go up on a roof should meet the same requirements as a String inverter that has AFCI built-in. Or, so they say!
https://www.youtube.com/watch?app=desktop&v=H3c9GbLhQhY&t=4s
https://www.youtube.com/watch?app=desktop&v=H3c9GbLhQhY&t=4s
"we go where power lines don't" Sierra Nevada mountain area
htps://offgridsolar1.com/
E-mail offgridsolar@sti.net
htps://offgridsolar1.com/
E-mail offgridsolar@sti.net
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Comments
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Yep--Arcs can be sustained at any voltage over >~12 VDC. Arc welders do very nicely at ~25 VDC.
Here is a download PDF about the subject:
https://www.ngdc.noaa.gov/stp/satellite/anomaly/2010_sctc/docs/1-7_MBodeau.pdf
For example, at 80 Volts DC, the current must be less than ~1.5 Amps DC to be safe from sustained arcs.
-BillNear San Francisco California: 3.5kWatt Grid Tied Solar power system+small backup genset -
I don't think they arc weld much at NEC Seems like a roofing boondoggle that I am happy to never been a part of!"we go where power lines don't" Sierra Nevada mountain area
htps://offgridsolar1.com/
E-mail offgridsolar@sti.net
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