United States NEMA Configurations

General - Purpose Nonlocking Plugs and Receptacles
    15 Ampere 20 Ampere 30 Ampere 50 Ampere 60 Ampere
    Receptacle Plug Receptacle Plug Receptacle Plug Receptacle Plug Receptacle Plug
125V 1 1-15R
 1-15P
                
250V 2   2-15P
 2-20R
 2-20P
 2-30R
 2-30P
        
125V 5 5-15R
 5-15P
 5-20R
 5-20P
 5-20R
 5-30P
 5-50R
 5-50P
    
250V 6 6-15R
 6-15P
 6-20R
 6-20P
 6-30R
 6-30P
 6-50R
 6-50P
    
277V,
A.C.		 7 7-15R
 7-15P
 7-20R
 7-20P
 7-30R
 7-30P
 7-50R
 7-50P
    
125 /
250V		 10     10-20R
 10-20P
 10-30R
 10-30P
 10-50R
 10-50P
    
3Φ
250V		 11 11-15R
 11-15P
 11-20R
 11-20P
 11-30R
 11-30P
 11-50R
 11-50P
    
125/
250V		 14 14-15R
 14-15P
 14-20R
 14-20P
 14-30R
 14-30P
 14-50R
 14-50P
 14-60R
 14-60P
3Φ
250V		 15 15-15R
 15-15P
 15-20R
 15-20P
 15-30R
 15-30P
 15-50R
 15-50P
 15-60R
 15-60P
3Y 125/ 208V 18 18-15R

 18-15P
 18-20R
 18-20P
 18-30R
 18-30P
 18-50R
 18-50P
 18-60R
 18-60P



Locking Type Plugs and Receptacles
    15 AMPERE 20 AMPERE 30 AMPERE
    Receptacle Plug Receptacle Plug Receptacle Plug
125V L1 L1-15R L1-15P        
250V L2     L2-20R L2-20P    
125V L5 L5-15R L5-15P L50-20R L50-20P L5-30R L5-30P
250V L6 L6-15R L6-15P L6-20R L6-20P L6-30R L6-30P
277V, A.C. L7 L7-15R L7-15P L7-20R L7-20P L7-30R L7-30P
480V L8     L8-20R L8-20P L8-30R L8-30P
600V L9     L9-20R L9-20P L9-30R L9-30P
25V L14       L14-20