21 votes
Accepted

Dishwasher plug blocking disposal outlet

Re-wire the outlet so the top one is on the switch instead of the bottom one. Is this even possible, and if so, considering I've never done it before and it's under the kitchen sink without much room, ...
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11 votes
Accepted

Does a garbage disposal and/or dishwasher need to be on a GFCI?

There are no requirements in National Electrical Code (NEC) that a residential disposal must be GFCI protected. However, there may be requirements in the installation instructions, which would make ...
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  • 128k
10 votes

Electrical line has no juice after being shortened

Usually there is a switch before the disposal. You push a button, or flip a switch to turn on the disposal. Did you turn the switch on? If this is the case, then this was not the best option for this ...
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  • 2,292
10 votes

Garbage disposal always on when plugged in (sparks seen on outlet at every connection)

Are you positive you plugged the disposal into the exact same outlet? Often only one of the two outlets on a duplex plug under the sink is wired to the disposal. You might have plugged it into a plug ...
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  • 1,521
10 votes

Garbage Disposal - Water Shoots Up Non-Disposal Side

Replace that 4 way junction with two wyes offset from each other (you might drop the disposal trap a few inches to achieve this) and extend the aav arm as high as possible. The pressure from the ...
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  • 17.8k
10 votes
Accepted

Garbage disposal has strange switch wiring

The black wire is actually connected to the red wire next to it by means of a backstab. It's a good practice not to use backstabs because they are prone to failures. Twist the switch off that black ...
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  • 55.1k
9 votes

Garbage Disposal - Water Shoots Up Non-Disposal Side

Get rid of that double trap setup and that PVC tee monster. Configure a single p-trap to a waste ell on the vertical waste pipe coming out of the floor. A baffle tee goes to the top of the trap with ...
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  • 33.5k
7 votes
Accepted

What should I do about soaked particle board under my kitchen sink?

Remove cabinet door. Fix leak. Remove particle board and put a box fan blowing into the cabinet for at least 24 hours. Treat the floor under there with a mold killing cleaning spray. Put the fan back ...
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  • 12.8k
7 votes

Why does my garbage disposal have a 3 way switch?

What you have there is a single pole switch that has been tapped to continue the permanent hot to another source. Perhaps an outlet or dishwasher. If you are installing a new dishwasher it will ...
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  • 4,765
7 votes

Garbage Disposal - Water Shoots Up Non-Disposal Side

Et voila. This is what you should aim for, but where I drew the red circle you'll replace the wall tube with another tee that goes up to the vent and down to the drain. Turn the disposal around as ...
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  • 17.8k
6 votes

Can I wire a switch to toggle between the top and bottom outlets of a 1 gang receptacle

Crazy but in a good way. Brilliant actually. Use any common 3-way switch, I don't see a problem with it. The only issue that might call for a 2-gang switch box is the need for GFCI protection on both ...
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5 votes

Garbage Disposal Electrical Connection

The round hole/port where the conduit fitting is located is actually a threaded port. If you unscrew the locking nut on the fitting, you will then be able to unscrew the threaded conduit fitting from ...
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  • 33.5k
5 votes

Dishwasher plug blocking disposal outlet

Your best bet would be to rewire the outlet. It's an easy job. the hardest part is getting into position and cleaning out under the sink. Find the two breakers in your main panel that feed the ...
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  • 55.1k
5 votes
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How do I remove this drain pipe from my garbage disposal?

That should be a slip fit and simply pull out. It's possible that some prior worker glued the joint between 1&2 with 3 inserted, and it got stuck that way. It's also possible that it's merely ...
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  • 137k
5 votes
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Garbage Disposal - Water Shoots Up Non-Disposal Side

Apologies for the mickey mouse sketches. There are lots of CAD gurus here who would rightly shame me for this .... but anyway .... top is what I believe @JimmyFix-it intends. I think it's the ...
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  • 17.8k
4 votes
Accepted

Is a disposer required for dishwasher permanent installation?

I have had several houses with a dishwasher but not a garbage disposal. I don't think it really changes the installation that much... the dishwasher waste pipe connects to the sink drain before the ...
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  • 13.7k
4 votes

Garbage disposal replacement: how much to replace?

I wouldn't rely on the old flange. While the flange itself might be fine, there's plumber's putty between it and the sink. That stuff doesn't last forever, and if you knock it loose replacing the ...
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  • 20.1k
4 votes

Care and feeding of a long kitchen drain?

Depending upon the location of the kitchen sink with the garbage disposal, you could re-pipe the drain to a dump tank with a "macerator pump" or sewage pump. This would reduce the garbage disposal ...
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  • 12.1k
4 votes
Accepted

NM cable from wall box to dishwaster

You should not run NM sheathed cable through a cabinet that has doors which open to allow storage. You should be installing grounded receptacles and using appliance connector cords.
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  • 33.5k
4 votes
Accepted

Will this sink piping configuration result in standing water in the pipe?

I'll try to answer your questions as stated. Minimum height difference I'm not sure if there is a code for this, but it's good practice to have the bottom of the disposal drain higher than the top ...
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  • 26.6k
4 votes

Rusted garbage disposal resurrection

I think the acid in the Naval Jelly might corrode through the basin, I think it's some metal that really doesn't tolerate corrosives such as drain opener AT ALL and makes a huge caustic mess if you ...
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4 votes
Accepted

Wiring dishwasher and garbage disposal

The 12/3 and 20A is perfectly fine. This is a Multi-Wire Branch Circuit or MWBC. The basic idea is that by having two breakers on opposite legs (240V between them), you get 2 x 120V using 3 wires (hot/...
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4 votes

Does a plumbing hose going from a dishwasher to a garbage disposal require a loop?

You appear to have an "Air Gap" above the counter which the hose is coming from. That is the code approved "better than a loop" method for diswasher drains. You're fine.
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  • 137k
4 votes
Accepted

How would I go about replacing this disposal from a power source standpoint

Usually easiest to drop the disposer, turn it over, then remove the access cover and disconnect the disposal wires. Then reverse the order to re-install. Sometimes a new connector is in order. If you ...
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4 votes

How can I provide constant power to an outlet downstream of a switch?

Run more cable. However, consider also why it would be done this way - if the garbage disposal uses most of the capacity of the circuit, then the setup described allows use of (microwave/blender/...
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  • 137k
3 votes

Electrical Socket Doesn't Work for One Particular Appliance

There is nothing wrong with your receptacle. You just need to switch on the garbage disposal switch whenever you want the receptacle to have power. Yes, this is how the garbage disposal is controlled. ...
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3 votes
Accepted

Garbage Disposal only starts when manually kickstarted

Sounds like the motor is fine (once you have spun it up), but the motor starting switch/circuit has failed. In today's market, replacement is probably the way to go. Several decades back it might ...
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  • 137k
3 votes
Accepted

How to fix a garbage disposal pipe leak?

There is probably a gasket under that hold down flange. Buy a replacement gasket. Then remove the flange, use sand paper to remove any corrosion until you have a smooth, bright metal surface, then ...
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  • 6,651
3 votes

How do you hard wire a garbage disposal?

If this receptacle you are referring to is serving the kitchen counter you CANNOT use that to feed a disposal. Kitchen counter circuits cannot be used to feed fixed appliances. You will need to run a ...
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3 votes

Which side of a sink should I install a garbage disposal in?

I would say that 90% of all sinks with 60/40 splits have the disposal located in the smaller of the two areas. It only makes sense. A lot of people say they want them on the side they wash dishes in. ...
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