Hubbell plugs are highly respected in the electrical industry. NEMA 5-15, 5-20, 5-30, 5-50 plugs operate at 125 Volts. Plugs have 2 Poles and 3 Wires. Insulgrip series provides separate chambers for each terminal and a cord grip that clamps on each conductor as well as the outer jacket. Valise housings use a clamshell design for fast installation. Angled versions allow for plug access in tight locations.