VEVOR Deep Well Submersible Pump, 1.5HP 230V/60Hz, 37gpm 276ft Head, with 33ft Electric Cord, 4\" Stainless Steel Water Pumps for Industrial, Irrigation and Home Use, IP68 Waterproof Grade

It is a 3-core wire with a ground wire.

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Depends on what you're doing with it. If you're trying to use it for the house, yes, you need a control box. If you're using it strictly for manual irrigation all you need is a standard switch to turn it on and off when needed.

This depends on the specific size of the shell. If your shell is a standard 4-inch one, it won't fit in.

Hello, the green wire of the pump is the ground wire, which can be left unconnected when connected to the circuit breaker.

The product has a one-year warranty, and free parts replacement and technical consultation are provided within one year. Please refer to the following link for details. https://www.vevor.com/pages/shipping-policy