750W Solar install on TT

KJINTF wrote:


Why did you go MPPT? Vs PWM with panels in parallel?
That controller works great with 60voc input power - allows smaller easier to manage and lower cost wires from the array to the controller
What VOC do the panels produce?
Suggest you go a bit larger say 70 amp output fuse (and use a switchable breaker)
On good solar days you should easily see high 50amps from the PV array
(My little 550watt array easily produces 40+ amps and as you with only two 6Vdc GC batteries which work just fine for us)
I used switchable breakers for the array and load connections from / to the controller - makes it far easier to isolate the controller (it draws current from the battery when in long term storage, makes software upgrades easier, etc..
Suggest you hook up the voltage sense line and the Temp probe from the controller to the battery.
Plus the Ethernet and the serial data cable - you will need to setup the operational parameters via a computer
Strongly suggest you do not simply use the dip switches and set / forget the install
Any plans for the remote meter?

Panel ratings
Vmp: 29.8 volts
Imp: 8.39 amps
Voc: 36.9 volts
Isc: 9.09 amps

My (limited) understanding is that the MPPT will efficiently step to send maximum amps to 12V bank.

When you say 70A output fuse, do you mean in place of the 60A coming out of the controller?

What do you mean 'plans for the remote meter'?

I do plan on using voltage sense and temp probe.

Thanks for the tips on switchable breakers (they all are...the super-nice people at No AZ Wind and Sun set me up) and on not using the dip switches. Still figuring out the fine points of configuration and what/where I may need to isolate for maintenance, flexibility, etc.