Tripp Lite Standard Power Extension Cord 10A, 18AWG (NEMA 5-15P to NEMA 5-15R) 25-ft.(P022-025) Several of these are used for live music powered PAs.
C2G 14719 18 AWG Universal Power Cord - NEMA 5-15P to IEC320C13, TAA Compliant, Black (25 Feet, 7.62 Meters)