Locking connector is the perfect tool to keep your generator safely connected. This model by Legrand is a 30A twist lock connector to use with generators up to 7500 Watts. It has 3 poles, 4 wires grounding and is commercial grade. Its ribbed-nylon housing is super tough for superior impact and chemical resistance and a secure gripping. It also provides an integral dust seal. This easy-to-use product is backed by a 5-year limited warranty.