Otis Singleton
Garbage disposals can be connected in two ways: hardwired directly into a dedicated circuit or wired with appliance cords plugged into wall outlets. If you're planning to wire a garbage disposal to a switch, it's important to understand the basics of electrical wiring and safety precautions to avoid accidents. The process involves turning off the power, preparing the workspace, connecting wires, and finally testing the garbage disposal to ensure it operates correctly.
| Characteristics | Values |
|---|---|
| Complexity | Wiring a garbage disposal can be complex and requires experience working with electrical components. |
| Danger | If you don't have experience with electrical wiring, connecting a garbage disposal can be dangerous and may result in electrocution. |
| Power Source | Garbage disposals are either hardwired into a dedicated circuit or plugged into a wall outlet. |
| Tools Required | Flathead and Phillips screwdrivers, adjustable wrench, mounting adhesive or screws, plumber's tape or sealant, safety goggles, gloves |
| Wiring Colours | Black, red, white, green or bare (ground wire) |
| Wiring Process | Connect black wire from power source to one terminal on switch, connect black wire to disposal to other terminal, connect ground wire to green screw on switch, connect jumper wire to switch's bottom brass screw, connect red wire to outlet's top brass screw |
| Additional Considerations | Avoid using a ground-fault circuit interrupter (GFCI) outlet, ensure correct polarity by matching black to black and white to white wires, check local electrical codes, ensure correct disposal unit operation by running water and testing with small amounts of food waste |
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What You'll Learn
- Engage an electrician to run a 12/2 wire from the circuit box to the switch hole
- Connect the black wire from the power source to one terminal on the switch
- Attach the ground wires to the green screw on the switch
- Connect the electrical wiring from the control box to the garbage disposal unit
- Test the garbage disposal with small amounts of food waste to ensure it's working
Engage an electrician to run a 12/2 wire from the circuit box to the switch hole
Wiring a garbage disposal switch can be complex and requires experience working with electrical components. It is dangerous to attempt this if you are inexperienced. It is recommended that you engage a qualified electrician to perform this task.
An electrician will be able to run a 12/2 wire from the circuit box to the switch hole. A 12/2 cord contains one black hot wire, one white neutral wire, and one green or bare ground wire. The electrician will ensure that the wiring is installed correctly and safely.
Before beginning any work, the electrician will first turn off the circuit in the area where they are working. They will locate the circuit box, which is usually found in a basement, kitchen, or hallway, and identify the breaker switch that controls the kitchen outlets. The breaker will be flipped to the 'Off' position to prevent the risk of electric shock.
The electrician will then run the 12/2 wire from the circuit box to the switch hole. They will ensure that the wiring is securely connected and follows the appropriate electrical codes. The electrician will leave enough excess wiring for you to connect the switch.
If you have a dishwasher, the electrician may also connect the garbage disposal wiring to the same circuit. They will ensure that the wiring is properly grounded and follows all safety protocols.
It is important to engage a qualified and experienced electrician to perform this task to ensure that the garbage disposal switch is installed correctly and safely.
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Connect the black wire from the power source to one terminal on the switch
Before attempting to connect a garbage disposal switch, it is important to turn off the circuit in the area where you are working. Locate the circuit box, usually found in a basement, kitchen or hallway, and turn the breaker to the off position. Never cut into your walls or start working while there is still power to the circuit.
Now, to connect the black wire from the power source to one terminal on the switch:
Firstly, identify the black wire from the power source. This is the "hot" wire, carrying electricity from the main power source to the switch. It is important to distinguish it from other wires, especially the white neutral wire.
Next, connect the black wire to the switch. The switch should have terminal screws, which are usually brass-coloured or dark-coloured. If the switch has two terminal screws, connect the black wire to one of them. It does not matter which terminal screw you choose, as long as the other terminal screw is left available for the white neutral wire. Ensure that the black wire is securely attached to the terminal screw by tightening it with a screwdriver.
If you are using a single-pole toggle switch, the black wire will need to be cut before connecting to the two brass terminals. Always turn the loop on the end of the wire in the same direction as the screw threads to avoid loosening the connection when tightening the screw.
You can now connect the white wire from the power source to the remaining terminal screw on the switch. This completes the circuit, allowing electricity to flow from the power source through the switch.
Finally, always test your connections before turning the power back on. Ensure that all wires are firmly attached to their respective terminals and that the connections are tight and secure. Once you are satisfied with your connections, you can turn the power back on and test your garbage disposal switch.
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Attach the ground wires to the green screw on the switch
To attach the ground wires to the green screw on the switch, start by locating the green or bare ground wires. These wires are running from both the 12/2 and 12/3 cables. Once you've found them, loop their ends around the green screw on the switch, which is typically located on the bottom left side. It is important to tighten the screw with a screwdriver in a clockwise direction to secure it against the wires.
The ground wires play a crucial role in electrical safety. They are designed to carry electricity away from the garbage disposal in the event of an electrical surge. This safety feature helps to prevent electrical injuries and reduce the risk of electrical fires.
When working with electrical components, it is always important to prioritise safety. Before beginning any electrical work, ensure that you have turned off the circuit in the area where you are working. Locate your home's circuit box, typically found in the basement, kitchen, or hallway. Identify the breaker switch that controls the outlets in your kitchen and flip it to the "Off" position. This simple step will protect you from the risk of electric shock.
Additionally, it is recommended to hire a professional electrician, especially if you have limited experience with electrical wiring. They can safely run the wires from the circuit box to the switch hole and ensure that your garbage disposal is properly connected.
By following these steps and taking the necessary safety precautions, you can confidently attach the ground wires to the green screw on the switch, ensuring a safe and functional garbage disposal system.
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Connect the electrical wiring from the control box to the garbage disposal unit
Before you begin, ensure that the power is switched off at the circuit breaker to avoid any electrical accidents.
Now, to connect the electrical wiring from the control box to the garbage disposal unit, follow these steps:
Firstly, identify the wires. The black wire is the hot wire, the white wire is the neutral wire, and the green or bare wire is the ground wire. If you are using a 12/2 cord, it will contain one black hot wire, one white neutral wire, and one green or bare ground wire.
Next, connect the black wire from the power source to one terminal on the switch, and then connect the black wire leading to the garbage disposal unit to the other terminal. If your switch has a grounding screw, ensure the green or bare ground wire is also connected to the switch.
If you are using a ring connector, remove the screw, thread the connector through, and then tighten the screw to the garbage disposal unit. Pull out the black and white wires from inside the garbage disposal unit and match and connect the wires—black to black and white to white. Secure the connections with wire nuts and pull on each splice to ensure they are firm.
If your garbage disposal unit plugs into an outlet under the sink, ensure that it is plugged in. The outlet should be a GFCI (Ground-Fault Circuit Interrupter) for safety.
Finally, turn the power back on at the circuit breaker and test the garbage disposal unit. Run water through the sink and turn on the unit to ensure it operates correctly. Check for leaks under the sink and verify all connections. Test the unit with small amounts of food waste to ensure it is functioning properly.
Please note that wiring a garbage disposal unit can be complex and may be dangerous if you do not have experience working with electrical components. Always follow proper electrical safety procedures and consult a certified electrician if you are unsure about any part of the process.
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Test the garbage disposal with small amounts of food waste to ensure it's working
To test if your garbage disposal is working, you can put small amounts of food waste down the sink into the disposal. When the unit is switched on, an impeller plate with blades attached spins rapidly, grinding the food waste into smaller particles. The ground food waste is then flushed away.
It is recommended that you only put small amounts of soft and easy-to-process food waste down the garbage disposal at a time. Larger bits of food can become jammed between the impeller blade and the drain hole, so it is best to cut large food pieces down.
Fibrous foods like celery, pasta, corn silk, rice, and pits should be avoided, as fibers can get entangled and cause an obstruction. Similarly, eggshells, shellfish, and coffee grounds do not decompose quickly and can accumulate and stop up the drain.
Cooking fats, grease, and oils are also difficult for a disposal to break down and can cause clogs in your drain. However, small amounts of grease are sometimes unavoidable, so it is recommended to use cold water when operating the disposal, as this will cause the grease to solidify and make it easier for the disposal to break it up.
Fruit pits, small bones, and cooked meat are generally safe to put down the garbage disposal.
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