The box is sturdy and the outlets are good & conveniently setup. However, though the wiring is accurate the size wire’s & color coding is incorrect, this box is made in china and the size & color coding shows it, the correct size & color coding for the United States are: for (220V/50A 6AWG) for (120V/30A 10AWG) for (120V/20A 12AWG) Hot wires in this application should be: RED & BLACK on the 220V 50A outlet. The other two 120V the hot wire should be black. Neutral wires should be: WHITE Ground wires should be: GREEN or BARE COPPER Note: (AWG) = American Wire Gauge I hope this helps
JaiMed 
