The Huge Caveat To Keep In Mind When Installing A Kitchen Garbage Disposal - Tasting Table
Briefly

When tackling a kitchen remodel, homeowners often encounter challenges, especially with installing new appliances like garbage disposals. Professional advice highlights that if a disposal requires hardwiring, certain areas mandate hiring a licensed electrician. For replacements of existing units of the same type, DIY is generally permissible. However, homeowners should be aware of local regulations regarding electrical, plumbing, and permit requirements. Additionally, they may choose between corded and non-corded models, with corded disposals offering easier installation via a standard wall socket.
If you need hardwiring (meaning you're installing a model that isn't a plug-in), some areas require a licensed electrician for the wiring.
If you're replacing an old unit with the same type, it's usually fine to DIY, but check for electrical, plumbing, and permit requirements if installing a new one.
A corded garbage disposal comes with all of the confusing electrical work already completed for you. All you have to do is plug that simple cord into a wall socket.
In states like California and Idaho, you need an electrician's license to perform any kind of electrical work, from garbage disposal to ceiling fan installation.
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