Estimated Time: Depends on personal level experience, ability to work with tools and install disposal circuit wiring. Notice: Installing additional electrical circuit wiring should be done according to local and national electrical codes with a permit and be inspected. Electrical Connections for a Garbage Disposal. How to Wire a Disposal. Fully explained dishwasher disposal wiring diagrams with pictures for wiring the outlet that serves a dishwasher and a garbage disposal.
One very important element can be easily overlooked as you will see in these pictures. Electrical Outlet Wiring. Home electrical wiring includes volt outlets and volt outlets and receptacles which are common place in every home.
See how wiring electrical outlets for the home are done. Guide to Home Electrical Wire. Complete listing of electrical wire types and parts used for home projects with electrical code information serves as selection guidelines. How to Wire Outlets. Get a Quick Reply! Garbage disposals sometimes called food disposers can be connected to the electrical power supply in one of two ways.
They are sometimes hardwired directly into a dedicated circuit, or they can be wired with an appliance cord that plugs into a wall outlet that is usually located inside the sink base cabinet.
When hardwired, the disposal is connected to a switch that is installed in an electrical box either in the sink base cabinet or on a wall near the sink. If the switch is near the sink, there's usually a second box, serving as a junction box, inside the cabinet. Any exposed wiring inside the cabinet should be protected by flexible metal conduit BX cable , or "Greenfield".
Most jurisdictions also allow this direct wiring to be protected within non-metallic flexible conduit or tubing. With the plug-in configuration, the disposal cord plugs into an outlet receptacle located inside the sink cabinet. The outlet is controlled by a wall switch, which is usually located on the wall near the sink.
The outlet is often wired as a split receptacle so that only one half of the outlet is controlled by the switch; the other half is always powered and can be used for another appliance, such as a water filter or dishwasher. This outlet can also just be a single outlet, with room for only one plug, though there are other configurations, as well. Cords are not sold with disposals and must be purchased separately. There are several kits available that contain all the parts required for installation, such as a grounded appliance power cord with plug, a cord clamp, and plastic wire connectors.
Be sure to use a grounded cord with the appropriate voltage and amperage ratings for your garbage disposal. It's usually easier to connect the cord to the disposal before mounting the disposal under the sink, but you can also complete the wiring after the unit is mounted. Remove the metal cover from the wiring compartment on the bottom of the garbage disposal unit.
On most units, the cover is secured with a single screw. Remove the screw with a screwdriver and set the pieces aside you will need them later. Install a cord clamp into the hole near the wiring compartment. Insert the threaded end of the clamp into the hole and secure it on the inside of the unit's base plate with the clamp's nut. You will have to reach through the wiring compartment to thread and tighten the nut onto the clamp. It may be necessary to tap on the lugs of the mounting nut with a flat head screwdriver to tighten it down securely.
Some disposals are made so the cord clamp screws directly into the unit, so this step may vary depending on your model. If the cord wiring is stranded copper, be sure to use the "stranded" notches on the wire stripper.
If the wiring is solid copper, use the "solid" notches. Wireless switches use a remote control to send a signal to your disposal, turning it on and off as needed. They're handy, and it prevents you from having to drill into your worktop, but it's pretty easy to lose the remote control. Toe kick switches allow you to use your garbage disposal completely hands-free. They are designed with a footswitch that sits underneath your sink and is used to turn the garbage disposal on and off.
It's worth noting that toe kick switches can only be used with garbage disposals of 1 horsepower or less. Safety always comes first, and when electricals are involved, you can never be too careful. Here are some safety tips you must follow before you start work:. Ok, so wiring and home electrics are not always straightforward, but we've given a step-by-step guide below on how to go about it.
Remember, your garbage disposal should be on its own 15—amp circuit. To wire the switch itself, you'll need:. Make sure your power is all turned off.
Depending on your setup, you may need to turn off the electrical supply for the room or for your entire home. It's crucial you do this, or you could risk serious injury. Cut a piece of wire 4 inches long and set aside.
Use the utility knife to carefully slit about 2. Hold your switch so that it's clear the on position is pointing upwards. Take your red wire and attach it to the brass screw at the top of the switch. Loop it around the screw and then tighten it to hold it in place. This red wire powers the disposal unit, so it's important it's connected to turn it on and off. Locate the green screw on the switch and the green wire from the box.
Attach the green wire to the green screw and tighten it in place. This takes the electricity away from the disposal in case there's an electrical surge, so it's important to have this in place to mitigate any risk of electrical fires. Take the black wire you cut in step 1 and attach it to the other brass screw.
This will connect to the outlet itself and provide the power. Loop the wire around the screw and then tighten it in place. Twist them together and put a wire cap over the end to keep them all together. This will allow power to travel between the outlet and the device. Locate all the white wires and twist them together. These will also attach to the outlet to complete the circuit. Use a wire cover to hold them all together. Attach your plate with the switch on into the electrical box.
Make sure all the wires are connected securely and pushed into the box, so nothing is protruding. Ensure everything is working correctly before you tighten it all up with screws.
Your switch should not be located too near any water sources as this can be a hazard. You can legally put this switch in a nearby cupboard, and you should keep it 30cm away from the sink itself for safety. You need to avoid a wet area as there is a risk of electrocution. Wireless garbage disposals use a push button or remote control, and these are generally waterproof.
This means you can place them on the kitchen counter right next to the sink. Generally, the further away from water you install the garbage disposal switch, the safer it is. The best location is almost always on the wall behind the sink, 30cm away from the faucet.
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