Quick easy question (im just dumb..lol)

Re: Quick easy question (im just dumb..lol)

mvandeusen wrote: »

HI

I have a 40 amp Morningstar with TriStar TS-M-2 on it. I am wondering what is the MAX amount of 120w panels I can attach to the with the 120's i thing are at 7.7amp.

thank you

Your controller, is it a TS-45, or a TS-MPPT-45 ? There is a difference, the MPPT model can handle higher voltages and down-convert the voltage to match battery voltage, turning the excess solar panel voltage into extra amps. The other one cannot take advantage of the extra voltage.
If your controller is the MPPT model, then what is the max open circuit/no load voltage of your panels?

Re: Quick easy question (im just dumb..lol)

mvandeusen wrote: »

That is it.. Do you know how many of my panels can I add to it before I need another controller? Thanks

"That is it" ? Which one is "it"? The TS-60, or the TS-MPPT-60? The answer will be different. They look very much the same, but they are not the same.
And for that matter, the TS-45 and the TS-MPPT-45 look very much the same as the TS-60 and the TS-MPPT-60, but they are definitely not the same! They are four different controllers with four different abilities and specs.

Re: Quick easy question (im just dumb..lol)

I've read the posts, and I did not find the voltage of the system you are using, 12V batteries, or 48V batteries

Either way, the spec is for the OUTPUT Amps of the controller.
You have the PWM controller, so add the amps of the panels going into it, and when you reach 60amps, that's all you can feed it.
7A panels, 12V battery - you could go up to 9 panels (of the type you listed) in parallel, for 63 amps. If you figure by the time the sun is perfectly aligned to the panels for full power, your batteries should be pulling less than full power, you won't blow the controller. 8 panels would insure no blown controller (only 56a).