According to the wiki [reprap.org] the rambo has 3 power supplies with the following rating:
- Heated Bed, 15A 12-24V (version earlier than 1.1 limted to 14A 16V due to fuse rating, see rambo_development for hacks)
- Extruders and fans, 5A 12-24V (fuse can be exchanged for up to 10A capacity) 10V-26V input voltage
- Motors, 5A 12-24V (fuse can be exchanged for up to 10A capacity) 10V-26V input voltage