This will be an academic question as I worked on this circuit and failed and won't be going back to the customer, but I want to know what I could have done next time (actually I may be willing to go back at no charge if I can fix it easily):
1. Garbage and dishwasher outlet under the sink; upper (switched) garbage disposal works fine with the switch. Lower dishwasher one does not (reversed cords/tried other appliances: the lower outlet simply doesn't work).
2. BOTH outlets show it's correctly wired (with tester); BOTH outlets show 120v with multimeter as well; Disposal outlet works perfectly with the switch on and off.
3. I changed the tandem 20amp breaker as customer wanted it changed (as it was really old). But this did not fix it...
4. I also changed the outlet even though I suspected it was not the problem...
5. Outlet, of course, was split; the one neutral wire from the junction box was wired to the common neutral screws; one black and one red (red=disposal switch) was wired to the hot sides of the outlet and SPLIT as it should be.
6. Ground wire correctly attached to the outlet.
7. I opened the disposal switch junction both and the red disposal wire was attached to a neutral wire; Odd. Nonetheless I checked the pigtail and it was fine.
8. I also checked all the neutral connections for tightness at the breaker panel.
9. If there was a problem with the one and only NEUTRAL wire for the outlet junction box, I would suspect the disposal half of the outlet wouldn't work either, but it does.
10. If there was a problem with dishwasher HOT wire, I would suspect I wouldn't get the 120 I was getting.
So I am so confused. ???? Help!!
1. Garbage and dishwasher outlet under the sink; upper (switched) garbage disposal works fine with the switch. Lower dishwasher one does not (reversed cords/tried other appliances: the lower outlet simply doesn't work).
2. BOTH outlets show it's correctly wired (with tester); BOTH outlets show 120v with multimeter as well; Disposal outlet works perfectly with the switch on and off.
3. I changed the tandem 20amp breaker as customer wanted it changed (as it was really old). But this did not fix it...
4. I also changed the outlet even though I suspected it was not the problem...
5. Outlet, of course, was split; the one neutral wire from the junction box was wired to the common neutral screws; one black and one red (red=disposal switch) was wired to the hot sides of the outlet and SPLIT as it should be.
6. Ground wire correctly attached to the outlet.
7. I opened the disposal switch junction both and the red disposal wire was attached to a neutral wire; Odd. Nonetheless I checked the pigtail and it was fine.
8. I also checked all the neutral connections for tightness at the breaker panel.
9. If there was a problem with the one and only NEUTRAL wire for the outlet junction box, I would suspect the disposal half of the outlet wouldn't work either, but it does.
10. If there was a problem with dishwasher HOT wire, I would suspect I wouldn't get the 120 I was getting.
So I am so confused. ???? Help!!