Over-panelling...

[9zGRePQUTwCipx]

Hello!

I currently have 16 250w panels connected to a Victron MPPT 150/70 in a 4 series/4 parallel configuration during the warmer months (30-40 ºC). In the winter, I switch the cables to a 3 series/5 parallel configuration as the cold wind really bumps up their efficiency and the controller gives over-voltage warnings.

My question is... There a a few weeks a year when there is a lot of cloud cover where I'll get an average to 200-300 watts out of the panels I have. Would it be okay to have more (double) panels connected with switches and a 40amp breaker on the input to controller in case I forget to switch them off?

Many thanks,
Jason.

Edit: I forgot to mention it's a 48V setup.

 

[GMB]

There is verbiage in the user manual for your charge controller regarding over paneling. See link below if you don't have your user manual handy. Page 20, 1a at the bottom of the page.

https://www.victronenergy.com/upload/documents/Manual-SmartSolar-charge-controller-MPPT-150-45-to-150-100--250-60-to-250-100-EN-NL-FR-DE-ES-SE.pdf

Also a thread that has more info regarding your question:

Something Interesting About Victron Solar Charge Controllers

I learned something interesting about Victron Solar Charge Controllers (SCC) the other day. Most SCCs on the market provide two important specifications: Maximum PV Voltage and Maximum PV Power, and you can use these to correctly size your SCC to your PV array. Victron SCCs do not follow this...

diysolarforum.com

 

[9zGRePQUTwCipx]

There is verbiage in the user manual for your charge controller regarding over paneling. See link below if you don't have your user manual handy. Page 20, 1a at the bottom of the page.

https://www.victronenergy.com/upload/documents/Manual-SmartSolar-charge-controller-MPPT-150-45-to-150-100--250-60-to-250-100-EN-NL-FR-DE-ES-SE.pdf

Also a thread that has more info regarding your question:

Something Interesting About Victron Solar Charge Controllers

I learned something interesting about Victron Solar Charge Controllers (SCC) the other day. Most SCCs on the market provide two important specifications: Maximum PV Voltage and Maximum PV Power, and you can use these to correctly size your SCC to your PV array. Victron SCCs do not follow this...

diysolarforum.com

Wow! Thank you ever so much GMB!

I missed the word nominal - I'm glad I picked the Victron ;-)