“Commercial Use Only” panels??

[Firstascent]

I’m looking at some LG 400W panels for my RV build, I keep seeing a note on some of their panels that say commercial use only.

does anyone know anything about this from a warranty standpoint? I know I can physically install them and they’d work great, just want to make sure I’m covered in the case something goes south down the road.

 

[Ampster]

I don't know about the warranty because I bought used commercial panels. What is important is some of them are 96 cells so the voltage is higher. No problem for my string inverter but i had to buy more expensive microinverters for 4 of them that were going into another portion of the project.

 

[Firstascent]

I don't know about the warranty because I bought used commercial panels. What is important is some of them are 96 cells so the voltage is higher. No problem for my string inverter but i had to buy more expensive microinverters for 4 of them that were going into another portion of the project.

Thanks for your input. These ones are 72 cell and will charge up a 24v battery bank.

 

[NotTesla]

Check out Panasonic 48 volt HIT panels as well. I can fit (8) on my 22' RV roof w/ room to spare for (2) solar water heaters. Not as high output as the LG, but 8 x 330 w. = 2,640 and the layout leaves me enough room to install them on a captive short axis tilt-able frame. Temp. coefficient -0.258%/°C (Pmax) , module efficiency of 19.7% from 96 cell, 41.89 lb., 41.5" x 62.6" panel with a rated 90.76% output at 25 years. My cost w/ shipping to Delaware was $335 ea. for (16).

 

[efficientPV]

I would assume these have no UL rating and are used for industrial applications like portable traffic message boards remote monitors etc where safety or high voltge are not consided.

 

[Ampster]

The used Sunpower panels I bought were all UL rated. They had been installed in a GT system on an Industrial building.

 

[NotTesla]

NEC last updated solar labeling stds. in their 2017 ed., so maybe start there. Most of the newest/current regs are written to help service techs and 1st responders ID hazards and easily find rapid disconnects, as well as helping to avoid creating an over-voltage situation while servicing, but the basic panel characteristics are no different. Just read an article on tha very thing recently but can't find it now. I'll post a link if and when I do find it again.