Sorry for 2 questions. My new RV system is GoPower PWM 30a with two 200w panels.
Since my new RV also has 12V only refrigerator I know from experience off grid camping this may not be enough. (300 was enough on last RV but that was without 12V only refreg)
I know I can add 1 more panel to current system and everything will support it but what if I wanted to go to a total of Four 200w panels?
The current solar panels are GoPower as supplied by Manufacture, but they cost 2x what Renogy does.
Here is the specs of the 2 panels
I want to bypass the PMW controller mounted in the wall, and put a Victron 100/50 MPPT controller up near my Lithium battery (Inside RV front cabinet)
If I have 4 panels = 2 Gopower and 2 Renogy, it thought I would put one Gopower and 1 Renogy in series, than the 2 pair. Is this the best method?
I think anyway I look at doing this, the GoPower panels will pull the Renogy panels down to its level (which is only the loss of less 1a per Renogy panel).
Next problem. Currently the Solar panel output wires go to panel in wall, then the controller output Positive goes to battery and controller output Negative goes to to the RV chassis.
By me bypassing the current controller, this will cause the solar panel output negative wire to go to RV chassis.
since the RV chassis is Negative for everything, is this OK? Searching the internet you will find both answers yes and no.
But they make common negative mppt controllers
Since my new RV also has 12V only refrigerator I know from experience off grid camping this may not be enough. (300 was enough on last RV but that was without 12V only refreg)
I know I can add 1 more panel to current system and everything will support it but what if I wanted to go to a total of Four 200w panels?
The current solar panels are GoPower as supplied by Manufacture, but they cost 2x what Renogy does.
Here is the specs of the 2 panels
GoPower | Renogy | |
Max power Vmp | 19.11v | 19.2v |
Max power Imp | 9.65a | 10.42a |
Open Circuit Voc | 22.78v | 23v |
Short circuit Isc | 9.32a | 11.05a |
I want to bypass the PMW controller mounted in the wall, and put a Victron 100/50 MPPT controller up near my Lithium battery (Inside RV front cabinet)
If I have 4 panels = 2 Gopower and 2 Renogy, it thought I would put one Gopower and 1 Renogy in series, than the 2 pair. Is this the best method?
I think anyway I look at doing this, the GoPower panels will pull the Renogy panels down to its level (which is only the loss of less 1a per Renogy panel).
Next problem. Currently the Solar panel output wires go to panel in wall, then the controller output Positive goes to battery and controller output Negative goes to to the RV chassis.
By me bypassing the current controller, this will cause the solar panel output negative wire to go to RV chassis.
since the RV chassis is Negative for everything, is this OK? Searching the internet you will find both answers yes and no.
But they make common negative mppt controllers