240v Float Switch Wiring Diagram

How to wire a control switch for a 240 volt pump.

240v float switch wiring diagram. Wiring a 20 amp 240 volt switch can be a confusing experience for the average homeowner used to working with standard 110 volt circuits. With both conductors carrying 120 volts there is an increased risk of injury or property damage. When controlling a 240 volt motor it is best to install a double pole switch for this irrigation pump. The circuit includes 45 feet of 12 3 copper wire and a 15a double circuit breaker.

Let s start with the most basic float switch. Hello friends in this video i will tell you how to make the. The float switches provide logic to open and close the relay where the relay is handling the higher current required to run the pump. The float switch has two legs.

Most float switches have a white and black wire which means you will most likely have a white to black connection. Understanding 240 volt circuits and switches electrical question. I purchased a 30amp double pole single throw switch for a 240volt circuit dedicated to a steam humidifier for a home ventilation system. Single phase is either a two or three wire ac circuit.

For one thing both supply wires for this switch carry voltage. Positive from power supply to one side of float switch. A two wire single pole single throw float switch the rising action of the float can either close i e turn on a normally open circuit or it can open turn off a normally closed circuit installation scenarios might include a normally open float switch turning on a pump to empty a tank control schematic 2 or a normally closed. Wiring diagram for reference.

Wiring a control switch for a 240 volt pump. In this video how to use float switch wiring single phase on off motor using float switch diagram installation for water tank. When a cable passes through a switch it does not change from positive to negative you are only switching the positive on and off. One leg of the float switch will connect to the hot wire from the panel.

Positive from other side of float switch to relay coil. Glenn the relay is a allen bradley 700 ha32a2 10a 240vac the socket base is a xxxxx the float switch is a little giant model xxxxx 2 wire rated 115 240v switch. This is perfectly normal and the correct way to do it. The other leg will connect to the hot wire from the pump.

The diagram below details the use of either a 2359 or 2368 series float switch two in series wired for opposite operation in conjunction with a relay. This switch doesn t use a neutral conductor. Negative from power supply to relay coil.