Installed new garbage disposal today
Lars
4 years ago
last modified: 4 years ago
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$2000.00 to install garbage disposal? HELP
Comments (6)The problem isn't bolting this to the drain. The problem is that your wall drain is too high. Often, when people get new counters and undermount sinks, their sink is much deeper than the old one. As a result, your drain stub from the wall is still set for your old sink. Adding a GD to the new lower drain makes it even lower! So, you need to run a new drain line from the vertical stack in the wall, which is often mounted several feet away because we all like kitchen windows. I'd live w/o the kitchen disposal, or do most of it yourself. I'm not a plumber. But you can do most of this yourself--it just takes time. And your plumber will do it all for 110 an hour......See MoreDual sink with garbage disposal install
Comments (3)The drain line from the dishwasher is fine but I see three code violations on the sink & disposal drain lines. 1. The two drains are connected by means of astandard sanitary tee. Code requires a baffled tee. 2. The P-trap is too low, which resulted in installing an 1-1/2" vertical offset on the fixture arm. Code requires a 1/4" per foot downward pitch from the trap weir to the vent. 3. No cleanout. Code requires a cleanout on the upstream end of all drain lines. If you have a removable trap removing the trap will serve as the cleanout but when the trap is glued in you must install a cleanout on the line. I can certainly understand why he installed the unit in that manner, but there is a much simpler solution. First off, get a "disposal type" end waste or center waste kit. When installing a disposal type kit you begin by discarding the 1/4 bend (90 deg elbow) that is supplied with the disposal unit. The disposal type waste kit will have a cross tube that has a flat flange on the end. That tube is then installed on the disposal in the same manner as the 1/4 bend, but the line will no come away at the same elevation as the disposal discharge port. You then shorten the length of the tailpiece on the opposite sink and connect the two lines together with the "Baffled Tee" that is supplied in the disposal waste kit. In this configuration the tee is higher permitting the P-trap to remain at the correct height to provide the required pitch to the fixture drain line. In the configuration in the photos it would probably be best to install a disposal type center waste kit. This would then put the tee midway between the two sinks. You would then have to cut the fixture arm near the wall and install an 1/8th bend (45deg sanitary elbow) and extend the fixture arm out towards the center where it will meet the P-trap tail piece. It is important that you extend the fixture arm from the wall to reach the trap. Code prohibits adding an extension tailpiece on the P-trap. I have prepared an illustration that will show you how the disposal type kits are configured....See MoreInstalling an outlet for garbage disposal on a 120V/240 multi cir
Comments (3)Odds are you don't need to have the disposal on a GFCI circuit and you probably don't want it there. I understand that a motor can cause GFCIs to trip, you can read up on that somewhere and find out for sure. Or, what the heck, you're an Engineer, we use the scientific method, try it out and see for yourself if it works or trips, it is easy to switch it from on to the other. The two GFCI circuits you are considering tapping could be your required 2 kitchen small appliance circuits, if that is so you can't put the disposal on either circuit, not allowed by the NEC. In fact the disposal may be required to be on its own 20A circuit, I'm a little hazy about that but I think it is so, your inspector will let you know. If this is an extra circuit and a dedicated one isn't required then I would tap off the LINE side of the GFCI. You will need 12/2 wire, one black, one white and one bare copper, run that to a switch and then from the switch to the disposal. If you want the disposal to be ground fault protected connect to the LOAD side of the GFCI. When I say side I really mean the top pair of screws or the bottom pair of screws, they will be labeled LOAD and LINE. You can do this yourself, it is a lot easier than calculus. Just make sure that the current is off, turn off the breakers and use your meter to double check, and don't let anyone turn it back on while you are working on it. The 12/3 circuit might have a double pole breaker but it probably has 2 separate breakers, make sure you turn them both off. And while you are at it make sure the red and black wires are connected to breakers on different busses in the breaker box. The voltage in the busses are 180 degrees out of phase so if on opposite busses the currents cancel in the white wire and it never gets more than 20A, if on the same buss the the currents from the red and black ADD and you can get 40A in the white and a fried wire and maybe a fire. There are lots of little mistakes that can be made and some can lead to problems, so read a lot, get a book on home wiring, ask questions but don't trust the answers until you check them out. A lot of people sound like they know what they are talking about, they even believe they know but they don't. I might be one of them. Good luck. Here is a link that might be useful: wiring kitchens...See Morenew garbage disposal???
Comments (5)If you select the very quiet and powerful Insinkerator Evolution Excel, please be advised that the distance from the sink flange to disposer drain port is greater than for the earlier Insinkerator models. This only matters if the drain pipe passing into the wall is not very far below the present disposal's drain. Consult installation drawings for dimensions. The Evolution Excel is very heavy relative to some earlier models. In cramped cabinets, significant one-arm strength may be needed to hold up the disposal with necessary alignment perfection in order to tighten up the retaining ring without pinching the sink seal. Various methods of supporting the unit may be devised. My hopefully final approach (to be tested soon) is to use an inexpensive lab scissor jack for this purpose. Scissor car jacks also work but have various deficiencies as a practical approach. kas...See MoreLars
4 years agolast modified: 4 years agoLars
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4 years agoDavidR
4 years agolast modified: 4 years agoLars
4 years ago
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