Suplevel 50 Amp 6-50R Outlet Box 250 Volt, Enclosed Lockable Weatherproof Outdoor Electrical NEMA 6-50R Receptacle Panel Heavy Duty Box Pre-Drilled, For Welder EV RV Electric Car Generator, ETL Listed - Amazon.com
220V 50 AMP 4-Wire Circuit with Junction Box and Cover | Aterra Designs
Solar Photovoltaic Cell Combiner Box AC400V Circuit Breaker Switch With Junction Box 10A/16A/20A/25A/