Running tubes from solar array

[sser2]

Another advantage is we don't worry about rolling blackouts.

Need off-grid system for blackouts. If it is grid-tied, it will be down with the grid.

I am working on 3 kW off-grid system, as we have blackouts regularly here in mid-California. Water pumps and AC on solar permanently. 360 V primary DC voltage, perfect for a tube amplifier. And I can DIY it using common sense, without much concern for codes.

 

[JMFahey]

Hey Folks,

After installing a new solar array last year. I have been keenly aware that the system runs at an average of 365 VDC. Seems like that would be perfect to run a pair of EL84's or even 6L6's in PP. Granted I would still need to get the filament voltage. But geeks are always going to be geekin! I am going to build something up for my garage to take advantage of this situation that seems to be crying out to me...LOL

Are those 365V somehow referred to ground?
As in, say, is negative grounded?
IF so, those +365V are a shock hazard, your system will virtually be a "widowmaker", same as any system powered straight for Mains, with no isolation transformer.

 

[weissi]

typical modern pv inverters are transformerless, so the DC side can not be grounded.