NEMA 10-30 Male Plug to NEMA 10-30 & 6-20 (or 6-15) Female Receptacle. Dryer 3-Prong 30 AMP Y Adapter Cord. AC Power Splitter 10-30P to 10-30R & 6-20R 250V/7500W. Use on when you want to plug 6-20 (or 6-15) and 10-30 power cord plug into a 10-30 3-prong dryer 30amp outlet in the same time. Length: 36 inch