#220 VOLT ON OFF SWITCH WIRING DIAGRAM INSTALL#

Swamp cooler switches can be bought at any hardware store or online at Amazon or eBay. Where Can a Swamp Cooler Switch be Bought?

#220 VOLT ON OFF SWITCH WIRING DIAGRAM INSTALL#

If you are replacing a switch or doing a new install from scratch yourself, this will not be a problem, as you will be able to spot if the wrong wire color coding is being used. Especially in older homes where the wiring may not have been done correctly. While it is supposed to be followed, Black (hot), White (Common), it is always a good idea to double check. Keep in mind that wiring color coding is not always followed. Since the common wire (white wire) completes the connection, it does not need to run through the switch the same with the ground (green) wire.

The wires coming from the high and low sides of the motor need to be connected properly as well as the hot side from the water pump. The white wire from a breaker is usually common. The hot wire is from the breaker and is usually a black wire. The switch will have the low and high sides of the blower motor connected to it along with the hot side of the water pump.Īs you can see from the simple diagram above, the only real worry to focus on is wiring the hot side correctly into the switch. C: The Black wire is going to high side of blower motor.2: The Yellow wire is going to hot side of water pump.1: The Red wire is coming from low side of blower motor.L1: The hot wire coming from a breaker.Here is an example of a 110/120-volt swamp cooler switch that is wired in. Hot: The Black wire or hot side is connected to the switch and will give power to the proper setting when the switch is turned. Ground: The Ground wire is connected to all the grounds with a wire nut.Ĭommon: The common (neutral) wires, usually white, are all connected together, including the common side of the water pump. On the left side is the wiring coming from a breaker with Black (hot), White (common), and Green (ground). (Always follow the schematics that come with the switch that is bought, this is only an example.) The above is a basic wiring schematic for a swamp cooler switch. Single switches are also sometimes used with a single motor speed, and the pump is simply tied into the switch.Īn evaporator cooler switch is a much better option since it can change from low to high speed as well as fan and pump only.Įxample Swamp Cooler Switch Wiring Schematic. The common wires (white) are all tied together to complete the circuit when the switch is flipped.Īn evaporator switch is the most common way of controlling a swamp cooler, although thermostats can also be bought to control a cooler. The hot wire (black) goes through a switch to the motor. When voltage is applied to the high side, the windings in the motor will turn it faster.Ĭommon Evaporative Swamp Cooler Wiring Color Codes When voltage is applied to the low side of the windings in the motor, it will turn the motor slower. Here is a picture of a swamp cooler blower motor with the leads for Hi, Low, and Common labeled H, L, and C. Swamp cooler motors can be 1-Speed usually labeled only Low, and 2-Speed usually labeled both Low and High. The common (white) wires are usually all tied together in a wire nut. Example Evaporative Swamp Cooler Switch Wiring Diagramīe sure to always follow the schematics from the manufacturer for any motor or switch. Wiring can change between different manufacturers. Here is an example of the typical wiring of a swamp cooler switch. It will operate like any 110/120-volt appliance once it is plugged/wired into a cooling unit.Ī blower motor blows air into a building and can be either 110/120 volts AC or 220/230 volts AC, and can also have connections for low and high speeds. The water pump is what pumps water up to the cooling pads and is almost always 110/120 volts AC, and like any 110/120-volt appliance, it simply needs to be plugged into work. The wiring of a swamp cooler is not complex, but if you have never wired up a motor before or feel uncomfortable with electricity, it is advisable to hire an electrician to wire up your cooler.Ī swamp cooler needs power to run two things.

220 volt on off switch wiring diagram