Parallel (twin tech) kit to suit Yamaha generator EF2400IS and EF2000IS. Hook up two generators of the same specification for almost double the power output, while retaining the same voltage and frequency of a single unit. Parallel Kit The Parallel kit (also known as Yamaha Twin Tech Cables) allows you to quickly and easily connect two identical Inverter generators (either 2 x EF2000iS or 2 x EF2400iS) together to combine their output. The cable connects to parallel jacks on both generators. Note that the two generators must be the identical model. The cables feature durable over-braided construction, 45-inch color-coded wire leads, polarized IP30 banana plugs and flexible-tip construction that resists breakage and stands up to punishing everyday use. Features: Suits the EF2400IS and EF2000IS Yamaha generators. Quick installation. Combines output. *Note: For the EF2000iS, when two generator models are combined and connected via the kit, the peak output is 3600 watts and continuous output of 3000 watts. *Note: For the EF2400iS, when two generator models are combined and connected via the kit, the peak output is 4300 watts and continuous output of 3800 watts.