30A 125V Receptacle (yellow). 305CRR. Product Features:. 30 amp 125 volt dock side receptacle Locking (NEMA L5-30R). Accepts 8 gauge stranded wire or up to 6 gauge with ring terminals. Corrosion resistant reinforced nylon construction.. Yellow. WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.