Jacuzzi Wiring Diagram | Free Wiring Diagram Collection of jacuzzi wiring diagram. A wiring diagram is a streamlined conventional photographic representation of an electric circuit. It shows the components of the circuit as streamlined shapes, and also the power as well as signal connections between the gadgets. Hot Tub Wiring Installation - Electrical Wiring Jacuzzi Most hot tubs will require 4 wires being two hot wires, one neutral wire and one ground wire. The most common voltage requirement is 240 volts and most will need a 50 amp circuit. Some hot tubs have load requirements of up to 60 amps and others require only 30 amps or 40 amps.