[RE-wrenches] RV solar with SunPower

[jay]

HI Mac,

Sunpower used to have a white paper that showed positive ground was only needed above a certain voltage.  Like 200v+ from memory.

I don’t know if these particular modules would fall into that category.

jay

peltz power

> On Jan 20, 2018, at 9:59 AM, Jerry Shafer <jerrysgarage01 at gmail.com> wrote:
> 
> Mac
> I have used the sunpower 318 on trailers with the outback charge controller FM-60, which was wired for positive ground. However this was the only power on board, did not have any issues when connected to the truck or via the outback PS 2 except when I connected the laptop to the Mate 3 and had it plugged it to the inverter power, this would pop the GFI, I used an optical interface to prevent this from happening. I will say the Outback is more expensive then the panel so it may not be worth it.
> Jerry
> 
> On Sat, Jan 20, 2018 at 3:43 AM, Mac Lewis <maclewis1 at gmail.com <mailto:maclewis1 at gmail.com>> wrote:
> Hi Wrenches,
> 
> I have a buddy that would like to use a leftover SunPower E20-327-C-AC, panel on his RV.  Obviously he would need to take the inverter off.  What I'm not sure of is if this panel can operate in an ungrounded configuration, or negative ground or does this still need a positive ground?  If it does need a positive ground, are there any decent MPPT charge controllers that are fully isolated from PV to battery side, that would allow PV + ground and Battery - ground?
> 
> Thanks
> 
> -- 
> 
> 
> 
> Mac Lewis
> 
> "Yo solo sé que no sé nada." -Sócrates
> 
> 
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