Pool pumps are wired to run on either 115V or 230V. Most are run on 230V and are preset at the manufacturers at 230V. When wiring a pool pump, you must first know what voltage is coming to your pump from the house circuit breaker. Also you must ensure that the electrical supply is in line with the motor’s voltage, phase, and cycle. The motor’s voltage must comply with Local codes and NEC regulations, have a professional electician wire your pump for you or at least check your work. Failure to wire the pump correctly can cause electrical shock or can damage your pump motor and void your warranty.
Hot Tub Wiring
A large portion of 240V spas manufactured require a 50 amp 4-wire electrical service. Some hot tubs have load requirements of 30A or 40A, and a few even 60A, which should correspond to the size of the new feed circuit breaker installed in the house service panel. The Disconnect GFCI panel’s amp rating can be equal to, or larger than the feed breaker in the main panel.
Hot tubs with mixed voltage components (such as 120V ozonator and 240V heater) require 4-wire systems, which means they require an electrical circuit providing (2) hot wires, (1) neutral, and (1) ground wire. Check the owner’s manual.
The two hot legs (black + red) provide 240 volts (120V +120V). One hot leg with the neutral (white) wire provides 120V. The ground wire (green) carries no current except when a short circuit to ground occurs, causing the circuit breaker to trip on overload (not to be confused with the safety function of the GFCI).