I can not find any such lists on the official Epever site.
Quotes regarding max panel wattage seem only to be from resellers.
Subjective panel wattage is just that - subjective!
You can over panel, in parallel to keep the Voc below the limit, to whatever if you can ensure the demand is under the wattage limit.(edit
f the CC)
It appears in the controller installation manual.
For the Tracer Xtra:
Under downloads:
https://www.epever.com/product/xtra-10-40a-mppt-charge-controller/
Section 2 Page 9 under MAXIMUM PV ARRAY POWER
For the Tracer AN (old style):
Under Downloads, MANUAL:
https://www.epever.com/product/tracer-an-10-40a-mppt-charge-controller/
Same section and page as above.
In fact, as near as I can tell, these controllers work the same, the Xtra has a better and easier to use display, a nice cover over the connecting terminals, and a sleeker more modern housing. They were so close in price I went with the newer model. I've been really happy with it.
After building my lifepo pack I realized you cannot set the Xtra for lithium or 'user' settings without the RS485 cable and the computer setup program. I ordered out the cable and downloaded the program to my SurfacePro and it is way super slick and easy to use. I set up two charge profiles - one for regular daily use as for traveling, and the other with lower settings for storage. I no longer need to plug the coach into shorepower - the solar panels keep it charged perfectly. It takes just connecting the cable, and mere seconds to read the settings or update them. And the app has a nice data logging feature, as well as all system data points - PV volts and amps, battery volts and amps, charge mode whether boost or float, and etc. I've messed with it enough to figure it all out and it's very slick. I was trying to justify the cost of a Victron - their stuff is just top-tier, but this is a nice runner-up.
I actually have one of each - also a 10A mppt Tracer AN that gets utilized for my suitcase-portable panels. If we're dry-camping I can place those out and connect them to the second controller. They work really well together. While you can program user settings with the input buttons on the old AN model, it's way too complicated for me to figure out. But it uses the same cable and program as the newer model and super easy to set with the same or different settings. I just leave my higher-charging parameters loaded in the AN, as we would only use it while away.
Interesting I can can get nearly the same power from the 160W poly panels pointed at the morning sun, as I can can get from the 430W mono array mounted flat on the roof. Series PV wiring means less voltage drop to the controllers.
They are easy access from the step well of the coach. It was easy to bring the PV connect wires from the roof down the refer chimney. The main battery connect buses are under the step well.