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Locking NEMA Chart


  15 AMPERE 20 AMPERE 30 AMPERE
Receptacle Plug Receptacle Plug Receptacle Plug
2 POLE, 2 WIRE NON-GROUNDING
125 V L1-15R L1-15P        
250V     L2-20R L2-20P    
2 POLE, 3 WIRE GROUNDING
125V L5-15R L5-15P L5-20R L5-20P L5-30R L5-30P
250V L6-15R L6-15P L6-20R L6-20P L6-30R L6-30P
277VAC L7-15R L7-15P L7-20R L7-20P L7-30R L7-30P
347VAC     L24-20R L24-20P    
480VAC     L8-20R L8-20P L8-30R L8-30P
600VAC     L9-20R L9-20P L9-30R L9-30P
3 POLE, 3 WIRE NON-GROUNDING
125/250V     L10-20R L10-20P L10-30R L10-30P
3ø250V     L11-20R L11-20P L11-30R L11-30P
3ø480V     L12-20R L12-20P L12-30R L12-30P
3ø600V         L13-30R L13-30P
3 POLE, 4 WIRE GROUNDING
125/250V     L14-20R L14-20P L14-30R L14-30P
3ø250V     L15-20R L15-20P L15-30R L15-30P
3ø480V     L16-20R L16-20P L16-30R L16-30P
3ø600V         L17-30R L17-30P
4 POLE, 4 WIRE NON-GROUNDING
3øY
120/208V
    L18-20R L18-20P L18-30R L18-30P
3øY
277/480V
    L19-20R L19-20P L19-30R L19-30P
3øY
347/600V
    L20-20R L20-20P L20-30R L20-30P
4 POLE, 5 WIRE GROUNDING
3øY
120/208V
    L21-20R L21-20P L21-30R L21-30P
3øY
277/480V
    L22-20R L22-20P L22-30R L22-30P
3øY
347/600V
    L23-20R L23-20P L23-30R L23-30P