Ultimaker 3 Extended has a build volume of 215 x 215 x 300 mm.
Yes, PolyCarbonate can be printed on Ultimaker 3 Extended. Printing with PC requires a nozzle temperature of 260 degrees C. Ultimaker 3 Extended can go upto a temperature of 280 degrees C. So, PC can be printed on Ultimaker 3 Extended
PVA should only be run through the BB nozzle.
If you're looking to print with two different color materials, you're going to need to start with two files. If you want to create a print with dissolvable supports, Cura can generate the support material.
Currently, the PLA/PVA and Nylon/PVA prints are supported PVA combinations. You can try using other filaments with your PVA, but, the PVA may not adhere to them as well, and you could end up causing damage to your printer if they come off the bed.
The printer's wifi functions are all designed to work on a local network for security purposes, so you will only be able to view the camera feed in Cura, or control the printer (pause a print, etc.) if you are on the same network. If (for example) your printer is at the office, and it's critical that you be able to view the live feed or control it from home, we recommend setting up a VPN to remotely view or control your printer.
