Solar Combiner Box - Pre-Wired - 3 String Model Continuous Duty Rated at 600V DC, 25A Max Per Input String Pre-wired with MC4 Connectors - Includes FREE set of Mating Connectors All UL Compliant Components NEMA 4, 4X UL Listed Enclosure Output Cable Gland - MAX Output Wire Size: 8AWG or Smaller