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.
Garbage disposal electrical wiring.
A switch is located at the kitchen counter top area to conveniently operate the garbage disposal.
In this episode i wire up a new switch and outlet for a new garbage disposal.
A garbage disposal is typically provided with a 120 volt 20 amp circuit that is shared with the dishwasher.
Garbage disposals sometimes called food disposers can be connected to the electrical power supply in one of two ways.
Choose plastic electrical boxes that have winged hinges on the top and bottom since they re easier to install and don t require a stud as an anchor.
You may also elect to feed the disposer with a 20 amp circuit using 12 2 nm wire with a ground.
Electrical connections for a garbage disposal.
The diagram below shows the power entering the circuit at the grounded outlet box location then sending power up to the switch and a switched leg back down to the outlet.
Garbage disposal circuit.
A dedicated 15 amp circuit is required fed by a 14 2 nm cable with a ground.
Garbage disposals do the dirty work of cleaning up the messes after meals.
Electrical wiring diagram for a garbage disposal and dishwasher.
Buy electrical boxes for your switch and disposal outlet.
Look for standard electrical boxes that are about 2 3 inches 5 1 7 6 cm deep for both the switch and the disposal so you have room for all of the wiring.
When loaded down with garbage they use a good bit of amperage as they grind up the refuse.
The diagram above shows the power entering into the circuit at the switch box location then sending one power line for the dishwasher and a switched leg for the garbage disposal.
These wiring diagrams show typical connections.